Solved Past Paper

ETEA MDCAT Past Paper 2024

Practice and review ETEA MDCAT Past Paper 2024 with verified questions, correct answer keys, and detailed solutions.

Total Questions 200 Qs
Duration Limit 210 Min
Negative Mark 0.00
Attempt Count 0

Solved Questions & Explanations

200 questions with verified answers and explanations

1

The peptidoglycan cell wall is specific to.

Guinness World Records (General Knowledge Focus) PYQ
a Amoeba
b Bacteria
c Protozoa
d Virus
2

Where are spindle fibres attached on a chromosome during cell division.

Guinness World Records (General Knowledge Focus) PYQ
a Centromere
b Histone proteins
c Nucleolus
d Telomere
3

Which organelle contribute towards steroid production?

Guinness World Records (General Knowledge Focus) PYQ
a Endoplasmic Reticulum
b Golgi apparatus
c Ribosomes
d Lysosome
4

The lysosomes found in eukaryotes contain:

Guinness World Records (General Knowledge Focus) PYQ
a Hydrolytic enzymes
b Melotic enzymes
c Oxidative enzymes
d Mitotic enzymes
5

Plasma membrane is differentially permeable membrane due to the presence of?

Guinness World Records (General Knowledge Focus) PYQ
a Carbohydrates
b Lipids
c Proteins
d Vitamins
6

The following function/activity is NOT controlled by the autonomic nervous system.

Financial Action Task Force (FATF) PYQ
a Cardiac muscles contraction
b Salivation
c Smooth muscles contraction
d Thoughts and emotions
7

A motor neuron:

Guinness World Records (General Knowledge Focus) PYQ
a Carries impulse from receptors to CNS
b Carries impulse from effectors to CNS
c Carries impulse from CNS to muscles
d Connects sensory nerves to ganglions
8

Diffusion of ______ across the post synaptic membrane causes it to depolarise:

Post Cold War World PYQ
a Calcium ions
b Chloride ions
c Potassium ions
d Sodium ions
9

A reflex action, does not involve the____.

Financial Action Task Force (FATF) PYQ
a Brain
b Motor neuron
c Sensory neuron
d Spinal cord
10

What happens to the enzyme after an enzyme-catalysed reaction?

United Nations Framework Convention on Climate Change (UNFCCC) PYQ
a Reduced to inactive form
b Becomes inert
c Changes into substrate
d Used for another reaction
11

Catalase can be activated at pH:

Guinness World Records (General Knowledge Focus) PYQ
a 1
b 3
c 5
d 7
12

Enzymatic activity can be inhibited by?

Guinness World Records (General Knowledge Focus) PYQ
a Heavy metal ions
b Methane
c Mutase
d Noble gases
13

A competitive inhibitor:

Financial Action Task Force (FATF) PYQ
a Accelerates the chemical reaction
b Competes with the enzyme
c Is irreversible
d Is reversible
14

Wings of birds and that of flying lizards provide evidence of:

Guinness World Records (General Knowledge Focus) PYQ
a Convergent evolution
b Divergent evolution
c Same origin
d No evolution
15

The embryological stages of ______ show similarity in anatomical features.

World Leaders in News PYQ
a All living things
b All non-vertebrates
c All vertebrates
d Human, jelly fish and mouse
16

Which enzyme is secreted in the active form?

Guinness World Records (General Knowledge Focus) PYQ
a Amylase
b Lipase
c Peptidase
d Protease
17

Which hormone stimulates the secretion of gastric juice?

Guinness World Records (General Knowledge Focus) PYQ
a Cholecystokinin
b Gastrin
c Insulin
d Secretin
18

In an inflammatory response, bradykinin causes?

Natural Resources PYQ
a Activation of natural killer cells
b Blockage in blood vessels
c Construction of blood vessels
d Leakage of fluid from blood vessels
19

Which of the following is an example of passive immunity?

Guinness World Records (General Knowledge Focus) PYQ
a Antibodies from mother's milk
b Previous chickenpox infection
c Inactivated polio vaccine
d Live polio vaccine
20

Bacteria that lack flagella are called?

Guinness World Records (General Knowledge Focus) PYQ
a Amphitrichous
b Atrichious
c Lophotrichous
d Peritrichous
21

Antibiotics can be used against:

Guinness World Records (General Knowledge Focus) PYQ
a Herpes simplex
b Influenza
c Polio
d Salmonella typhi
22

The ______ in semen facilitate the transport of sperms.

Guinness World Records (General Knowledge Focus) PYQ
a Androgen
b Prostaglandins
c Oxytocin
d Testosterone
23

The acidity of urine is neutralized by?

Guinness World Records (General Knowledge Focus) PYQ
a Cowpers gland
b Prostate gland
c Seminal vesicle
d Vas deferens
24

The corpus luteum is essentially formed from?

Guinness World Records (General Knowledge Focus) PYQ
a Graafian follicle
b Ovum
c Oogonium
d Oocyte
25

The outer layer of uterus is called as:

Guinness World Records (General Knowledge Focus) PYQ
a Endometrium
b Myometrium
c Mesometrium
d Perimetrium
26

______ is spread through sexual contact.

Guinness World Records (General Knowledge Focus) PYQ
a Gonorrhoea
b Influenza
c Tuberculosis
d Typhoid
27

The cells contained in the lacunae of the bone are called?

Guinness World Records (General Knowledge Focus) PYQ
a Chondrocytes
b Osteoblast
c Osteocytes
d Osteoclast
28

The ____ surrounds the muscle fibre of the skeletal muscle.

Guinness World Records (General Knowledge Focus) PYQ
a Cytoplasm
b Lacunae
c Myofibrils
d Sarcoplasm
29

What happens to calcium when skeletal muscles recover from contraction?

Changed Names of Countries and Cities PYQ
a Released from the myosin head
b Released from the sarcoplasmic reticulum
c Pumped into the sarcoplasmic reticulum
d Exchanged for sodium ions
30

Which of the following blood groups has anti-A and anti-B antibodies in the serum?

Group of Seven (G7) PYQ
a A
b B
c AB
d O
31

What is the primary outcome of crossing over during prophase of meiosis ?

International Federation of Red Cross and Red Crescent Societies (IFRC) PYQ
a Chromosomes duplicate without any exchange of parts
b Homologous chromosomes exchange different pairs leading to recombinant chromatids and increased genetic variation
c Non-homologous chromosomes exchange parts
d Homologous chromosomes exchange identical parts, resulting in no genetic variation
32

The genetic makeup that your parents have transferred to you for your hair color, makes up your:

Guinness World Records (General Knowledge Focus) PYQ
a Genotype
b Karyotype
c Phenotype
d None of the above
33

Carnivorous plants have evolved mechanisms for trapping and digesting small animals. The product of this digestion is used to supplement the plant's supply of:

Guinness World Records (General Knowledge Focus) PYQ
a Carbohydrates
b Lipids
c Nitrites
d Water
34

Which is true for an X linked dominant trait?

Guinness World Records (General Knowledge Focus) PYQ
a All female offspring of the affected father will be affected
b Half of the female offsprings of the affected father will be affected
c No male offspring of an affected mother will be affected
d No female offspring of the affected father will be affected
35

Malpighian tubules are found in:

Guinness World Records (General Knowledge Focus) PYQ
a Earthworm
b Grasshopper
c Slug
d Leech
36

Shark belongs to class______.

Guinness World Records (General Knowledge Focus) PYQ
a Chondrichthyes
b Echinodermata
c Osteichthyes
d Urochordata
37

Canal system is a characteristic of?

Central American Integration System (SICA) PYQ
a Cnidarians
b Protozoans
c Porifera
d Segmented worms
38

Mantle is the feature of?

Guinness World Records (General Knowledge Focus) PYQ
a Annelids
b Chordates
c Echinoderms
d Mussel
39

The production of energy is______.

International Atomic Energy Agency (IAEA) PYQ
a Faster in anaerobic respiration
b Faster in aerobic respiration
c Same in both types of respiration
d Not associated with respiration
40

The pathway to the breakdown of glucose, carried out by micro-organisms, is called:

Guinness World Records (General Knowledge Focus) PYQ
a Lactic acid fermentation
b Alcoholic fermentation
c Cellular respiration
d Both A and B
41

Chromosome is typically made up from a combination of?

Guinness World Records (General Knowledge Focus) PYQ
a DNA and protein
b DNA and RNA
c RNA and lipids
d RNA and proteins
42

Which cytoplasmic organelle make their own proteins?

Guinness World Records (General Knowledge Focus) PYQ
a Chromosomes
b Golgi apparatus
c Mitochondria
d Smooth endoplasmic reticulum
43

The active movement of mitochondria in the cytoplasm is due to:

Freedom Movements & Decolonization PYQ
a Cyclosis
b Endoplasmic streaming movements
c Golgi apparatus
d Transfer RNA
44

Which part of the brain is controlling your sense of balance?

Guinness World Records (General Knowledge Focus) PYQ
a Amygdala
b Cerebellum
c Hippocampus
d Medulla Oblongata
45

The neurotransmitter______ is hydrolysed by monoamine oxidase:

Guinness World Records (General Knowledge Focus) PYQ
a Acetylcholine
b Adrenaline
c Gluamate
d Serotonin
46

Most of the neurons in the CNS are?

Multi-Polar World PYQ
a Bipolar
b Multipolar
c Pseudo unipolar
d Unipolar
47

How do enzymes enable the conversion of substrates into products by?

International Atomic Energy Agency (IAEA) PYQ
a Changing equilibrium in the direction of the substrate
b Increase the activation energy
c Lowering the activation energy
d Increase the substrate concentration
48

According to Lamarckism, the basis of evolution is:

Natural Resources PYQ
a Inheritance of acquired characteristics
b Mutation
c Natural selection
d Survival of the fittest
49

What best describes the hind leg bones seen in the whale?

Earth’s Structure and Geological Features PYQ
a Analogous to the fin of living fish
b Fossil structure from an extinct ancestor
c Homologous structure of the wings of a bat
d Vestigial structures that had a function in an ancestor
50

Which is true about the cells found in gastric glands lining the stomach wall?

Guinness World Records (General Knowledge Focus) PYQ
a Hormone cells secrete intrinsic factor
b Chief cells secrete gastrin
c Mucus cells secrete mucin
d Parletal cells secrete pepsinogen
51

What directly triggers the activation of natural killer cells?

Natural Resources PYQ
a Free radicals
b Hydrogen peroxide
c Interferons
d Oxygen
52

Which of the following is NOT true about plasmids found in streptococci?

Guinness World Records (General Knowledge Focus) PYQ
a Replicate autonomously from the chromosome
b Carry fewer genes than the chromosome
c They are considered as genetic element
d The bacterial chromosome depends on plasmids for replication
53

Which of the following bacteria produces endospores?

Guinness World Records (General Knowledge Focus) PYQ
a Both gram negative and positive bacteria
b Gram negative
c Gram positive
d Mycobacteria
54

_____ is used in the production of Humulin?

Guinness World Records (General Knowledge Focus) PYQ
a Bacteria
b Fungi
c Protozoa
d Virus
55

Which of the following does NOT relate to smooth muscles?

Central American Integration System (SICA) PYQ
a Have spindle shaped cells
b Controlled by the autonomic nervous system
c Line the wall of heart
d Lack striations
56

Which term best describes an organism's physical characteristic.

Central American Integration System (SICA) PYQ
a Allele
b Genetic code
c Genotype
d Trait
57

What will happen with the addition of salt to water?

Guinness World Records (General Knowledge Focus) PYQ
a Water potential will increase
b Water potential will remain same
c Osmotic potential will increase
d Osmotic potential will remain same
58

Which of the following is NOT true about viruses?

Earth’s Structure and Geological Features PYQ
a Contain DNA
b Can replicate on their own
c They have a sub-cellular structure
d Can infect bacteria
59

The genetic code of ______ is bound by a lipid membrane?

Guinness World Records (General Knowledge Focus) PYQ
a Enterovirus
b Flu virus
c Hepatitis A virus
d Polio virus
60

Viruses can not ______.

Guinness World Records (General Knowledge Focus) PYQ
a Crystalise
b Excrete
c Infect bacteria
d Mutate
61

Where are the enzymes required for the replication of HIV virus located?

Guinness World Records (General Knowledge Focus) PYQ
a In the protein spikes
b Surrounding the viral core
c Inside the capsid
d Outside the capsid
62

The process of ATP synthesis through a combination of electrochemical and osmotic events is known as:

Guinness World Records (General Knowledge Focus) PYQ
a Fermentation
b Glycolysis
c Oxidative phosphorylation
d Oxidation of pyruvate to acetyl CoA
63

Optimum pH for pancreatic lipase is:

Guinness World Records (General Knowledge Focus) PYQ
a 2
b 4
c 6
d 8
64

Sugarcane contains ______.

Guinness World Records (General Knowledge Focus) PYQ
a Fructose
b Glucose
c Ribose
d Sucrose
65

Sickle cell anaemia results from?

Guinness World Records (General Knowledge Focus) PYQ
a Linkage between the polypeptide chains
b Reduction in oxygen carrying capacity of haemoglobin
c Single amino acid substitution in the haemoglobin molecule
d Viral infections of RNA viruses
66

Which is INCORRECT about the globular proteins?

Guinness World Records (General Knowledge Focus) PYQ
a Abundantly found in hair
b Are spherical in shape
c Have polypeptide chains
d Soluble in water
67

What is the ester of fatty acids and long chain alcohol called?

Guinness World Records (General Knowledge Focus) PYQ
a Acylglycerol
b Glycerol
c Phospholipid
d Wax
68

Lipids, which do not contain fatty acid are:

Guinness World Records (General Knowledge Focus) PYQ
a Neutral lipids
b Phosphatidic acids
c Steroids
d Waxes
69

Which one of the following molecules has a zero-dipole moment?

Guinness World Records (General Knowledge Focus) PYQ
a BF₃
b NF₃
c NH₃
d H₂O
70

The unhybridized p orbital in sp² hybridization is?

Guinness World Records (General Knowledge Focus) PYQ
a In the same plane
b Out of the plane
c Parallel to sp² orbitals
d Perpendicular to sp² orbitals
71

760 torr is equal to ___ Pascal.

Guinness World Records (General Knowledge Focus) PYQ
a 1
b 76
c 760
d 101325
72

How many grams of CO₂ can be produced by thermally decomposing 10 moles of ZnCO₃?

Guinness World Records (General Knowledge Focus) PYQ
a 320
b 360
c 400
d 440
73

Molar heat of vaporization of water is?

Guinness World Records (General Knowledge Focus) PYQ
a 40.7 cal/mol
b 40.7 J/mol
c 40.7 kcal/mol
d 40.7 kJ/mol
74

Distillation under very reduced pressure is _______ distillation.

Financial Action Task Force (FATF) PYQ
a Destructive
b Fractional
c Steam
d Vacuum
75

The example of metallic solid is?

Guinness World Records (General Knowledge Focus) PYQ
a B
b C
c Cu
d Si
76

When a crystalline substance conducts current in one direction but not through other directions of the crystal, this property is?

World Intellectual Property Organization (WIPO) PYQ
a Allotropy
b Anisotropy
c Isomorphism
d Polymorphism
77

Forward reaction is the one that:

Financial Action Task Force (FATF) PYQ
a Is very slow at the beginning of the reaction
b Reacts to form reactants
c Speeds up gradually and at equilibrium its rate becomes constant
d Takes place from left to right as given in chemical equation
78

How many moles of NaCl are produced from 16.5g of HCl, according to the neutralization reaction?HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l)

Financial Action Task Force (FATF) PYQ
a 0.252
b 0.452
c 0.652
d 0.852
79

In the production of SO₃ from SO₂ and Oxygen, the yield of SO₃ is increased by?

Weather, Atmosphere and Temperature PYQ
a Adding a catalyst
b Adding more SO₂
c Increasing temperature
d Removing oxygen
80

Consider N₂ + 3H₂(g) = 2NH₃(g) ΔH = -92.46kJ/molThe optimum temperature (°C) to produce ammonia is?

Weather, Atmosphere and Temperature PYQ
b 450
c 5000
d Constant temperature
81

The unit of Kc for the system PCl₅ = PCl₃ + Cl₂ is?

Central American Integration System (SICA) PYQ
a dm³/mol
b mol/dm³
c mol/dm⁶
d mol²/dm⁶
82

For a first order reaction A → B, the rate constant is 0.0458 s⁻¹. Calculate rate of the reaction if the concentration of reactant is 0.35mol dm⁻³.

Financial Action Task Force (FATF) PYQ
a 0.012 mol dm⁻³ s⁻¹
b 0.014 mol dm⁻³ s⁻¹
c 0.016 mol dm⁻³ s⁻¹
d 0.018 mol dm⁻³ s⁻¹
83

A reaction is first order with respect to A and second order with respect to B, the rate equation is?

Financial Action Task Force (FATF) PYQ
a Rate = k [A]
b Rate = k [A][B]
c Rate = k [A]²[B]
d Rate = k [A][B]²
84

What mass of aluminium oxide (Al₂O₃) is produced from 18.5g of Al metal, when it reacts completely with oxygen gas according to the following equation?4Al(s) + 3O₂(g) → 2Al₂O₃(s)

Guinness World Records (General Knowledge Focus) PYQ
a 30.8g
b 32.6g
c 34.9g
d 36.5g
85

Calculate the work done when 1 mole of an ideal gas expands from 15 dm³ to 20 dm³ against a constant external pressure of 2 atmospheres.

Weather, Atmosphere and Temperature PYQ
a -10 atm.dm³
b -5 atm.dm³
c 5 atm.dm³
d 10 atm.dm³
86

When 1 mole of ice melts at 0°C and constant pressure of 1 atmosphere, 6025 J of heat is absorbed by the system. The molar volume of ice and water are 0.020 and 0.018 dm³, respectively. Calculate Δ

Weather, Atmosphere and Temperature PYQ
a 6010.20J
b 6015.20J
c 6020.20J
d 6025.20J
87

One slice of bread with a tablespoon of peanut butter on it contains 20g carbohydrate, 10g protein, and 9g fat. Calculate total energy consumed in this intake.

International Atomic Energy Agency (IAEA) PYQ
a 158kcal
b 173kcal
c 201kcal
d 218kcal
88

ΔH can be measured indirectly by applying?

Guinness World Records (General Knowledge Focus) PYQ
a Avogadro's law
b Faraday's law
c Gas's law
d Hess's law
89

The heat of sublimation of potassium is 98kJ/mol, the heat of dissociation of bromine gas is 192.5 kJ/mol. The ionization energy of K is 414 kJ/mol. The electron affinity of Br is -334.7 kJ/mol and the heat of formation of KBr is -405.8 kJ/mol. Calculate the lattice energy of KBr.

International Atomic Energy Agency (IAEA) PYQ
a -679.3
b -669.5
c 669.5
d 679.3
90

Which one of the following is a strong electrolyte in solution?

Guinness World Records (General Knowledge Focus) PYQ
a Acetic acid
b Ammonium hydroxide
c Carbonic acid
d Potassium iodide
91

When 4 g of magnesium was heated in excess of oxygen. Calculate the theoretical yield of magnesium oxide (MgO).

Guinness World Records (General Knowledge Focus) PYQ
a 3.7g
b 4.2g
c 5.4g
d 6.6g
92

The electrode potential of the standard hydrogen electrode is chosen as:

Guinness World Records (General Knowledge Focus) PYQ
a -1 V
b 0 V
c 1 V
d 2 V
93

Electromegativity of Al is approximately equal to that of?

Guinness World Records (General Knowledge Focus) PYQ
a B
b Be
c Mg
d Na
94

Which of the following alkali metal forms only normal oxide with O₂?

Guinness World Records (General Knowledge Focus) PYQ
a K
b Li
c Na
d Rb
95

Third period element that initially reacts rapidly with oxygen to form a protective oxide coating that prevents further reactions is:

Financial Action Task Force (FATF) PYQ
a Al
b Mg
c Na
d Si
96

Cu²⁺ salt solution is blue in colour due to transition of electrons from?

Guinness World Records (General Knowledge Focus) PYQ
a d to d orbital
b p to d orbital
c p to p orbital
d s to p orbital
97

Potassium ferrocyanide is which type of salt?

Guinness World Records (General Knowledge Focus) PYQ
a Complex
b Double
c Mixed
d Normal
98

Name of ketone functional group is?

Group of Seven (G7) PYQ
a Amino
b Carbonyl
c Carboxyl
d Formyl
99

Pyridine belongs to which class of organic compounds?

Guinness World Records (General Knowledge Focus) PYQ
a Alicyclic
b Heterocyclic
c Homocyclic
d Hydrocarbon
100

Which of the following elements cannot be detected directly in a given organic compound?

Guinness World Records (General Knowledge Focus) PYQ
a Chlorine
b Nitrogen
c Oxygen
d Phosphorous
101

The homolytic fission of C-H bond in an alkane result in?

European Free Trade Association (EFTA) PYQ
a Alkyl free radical
b Carbanion
c Carbocation
d Methylpropane
102

Addition of HBr to isobutylene mainly gives?

Guinness World Records (General Knowledge Focus) PYQ
a isobutyl bromide
b n-butyl bromide
c sec-butyl bromide
d tert-butyl bromide
103

Dehydrohalogenation of alkylhalide is carried out in presence of:

Guinness World Records (General Knowledge Focus) PYQ
a Alcoholic KOH
b Aqueous KOH
c Conc. H₂SO₄
d Zn dust
104

The pK₆ of n-propyl amine is:

Guinness World Records (General Knowledge Focus) PYQ
a 3.24
b 3.28
c 3.32
d 3.35
105

The carbon atom carrying positive charge and attached to three other atoms or groups is called?

Group of Seven (G7) PYQ
a Carbanion
b Carben
c Carbocation
d Oxonium
106

Which of the following has the highest boiling point?

Highest and Lowest Points PYQ
a ethyl alcohol
b isopropyl alcohol
c n-propyl alcohol
d tert-butyl alcohol
107

The reaction of an alcohol with sodium produces?

Financial Action Task Force (FATF) PYQ
a Aldehyde
b Alkoxide
c Ethane
d Ethene
108

Oxidation of secondary alcohol gives?

Guinness World Records (General Knowledge Focus) PYQ
a Carboxylic acid
b Ether
c Ketone
d Phenol
109

Which aldehyde is more reactive towards nucleophilic addition?

Guinness World Records (General Knowledge Focus) PYQ
a Acetaldehyde
b Butyraldehyde
c Propionaldehyde
d Formaldehyde
110

Acetic acid can be prepared by the hydrolysis of?

World Leaders in News PYQ
a Ethanal
b Ethanol
c Methanoic acid
d Methyl cyanide
111

Protein present in haemoglobin has ______ structure.

Earth’s Structure and Geological Features PYQ
a Primary
b Secondary
c Tertiary
d Quaternary
112

In competitive inhibition, the inhibitor:

Guinness World Records (General Knowledge Focus) PYQ
a Binds with substrate
b Competes with enzyme
c Competes with substrate
d Irreversibly binds with enzyme
113

How many moles are there in 60g of sodium hydroxide (NaOH)?

Guinness World Records (General Knowledge Focus) PYQ
a 2
b 4
c 6
d 8
114

Heating 24.8g of copper carbonate (CuCO₃) in a crucible produced only 13.9g of copper oxide (CuO). What is the percentage yield of copper oxide?

Guinness World Records (General Knowledge Focus) PYQ
a 81.79%
b 83.98%
c 86.87%
d 89.68%
115

Efficiency of chemical reaction can be checked by calculating:

Financial Action Task Force (FATF) PYQ
a Actual yield
b Theoretical yield
c Percentage yield
d Amount of the reactant unused
116

Actual yield will reach the ideal (theoretical) value if the % yield of the reaction is,

Financial Action Task Force (FATF) PYQ
a 10%
b 50%
c 90%
d 100%
117

Which of the following sub-shell does not exist?

Guinness World Records (General Knowledge Focus) PYQ
a 1p
b 1s
c 5d
d 6f
118

The splitting of spectral lines in magnetic field is:

Important Lines and Boundaries PYQ
a Aufbau principle
b Pauli exclusion principle
c Stark effect
d Zeeman effect
119

Which element has the electronic configuration of noble-gas notation [Kr], 5S², 4d²?

Guinness World Records (General Knowledge Focus) PYQ
a Mo
b Se
c Sr
d Zr
120

Total number of electron pairs present in the valence shell of central atom in water are:

Central American Integration System (SICA) PYQ
a 2
b 3
c 4
d 5
121

What is the mass of 1 mole of calcium carbonate (CaCO₃)?

Guinness World Records (General Knowledge Focus) PYQ
a 50g
b 75g
c 100g
d 125g
122

Which one of the following molecules has a pyramidal structure?

Earth’s Structure and Geological Features PYQ
a C₂H₄
b CH₄
c H₂O
d NH₃
123

A wheel makes 3 complete revolutions. What is the total number of radians through which a point on wheel has rotated?

Industrial Revolution PYQ
a 2π
b 3π
c 6π
d 9π
124

For rigid body that rotates about a fixed axis, the angle swept out by a line passing through any point on the body and intersecting the axis of rotation perpendicularly is called?

Guinness World Records (General Knowledge Focus) PYQ
a Angular acceleration
b Angular displacement
c Angular velocity
d Angular momentum
125

In a rotating spaceship, to produce artificial gravity, what does the centripetal force do?

Financial Action Task Force (FATF) PYQ
a Increases spaceship's rotation
b Has no effect inside the spaceship
c Pulls objects towards the centre
d Pushes the objects towards the outer wall
126

When the mass of a body moving along a circle becomes half and radius becomes double, and v is constant, the centripetal force becomes?

Financial Action Task Force (FATF) PYQ
a Double
b Half
c One-fourth
d Remains Same
127

What happens when two waves of the same frequency and amplitude meet in phase?

Guinness World Records (General Knowledge Focus) PYQ
a They produce a wave with the same amplitude as the individual waves
b They combine to form a wave double the amplitude, resulting in constructive interference
c They produce a wave with zero amplitude
d They cancel each other out resulting in a destructive interference
128

Which type of waves can be polarized?

Multi-Polar World PYQ
a Longitudinal waves
b Mechanical waves
c Sound waves
d Transverse waves
129

For longitudinal waves:

Guinness World Records (General Knowledge Focus) PYQ
a The particles of the medium remain stationary as the wave passes through
b The particles of the medium oscillate perpendicular to the wave's propagation
c The particles of the medium oscillate along the direction of the wave's propagation
d Their velocity is enhanced when they travel through vacuum
130

According to the principle of superimposition, when 2 or more waves overlap at a point in space, the amplitude of the resultant wave at that point is?

Guinness World Records (General Knowledge Focus) PYQ
a Always zero
b The product of the individual wave amplitude
c The product of the frequencies of the individual waves
d The sum of the amplitudes of the individual waves
131

The speed of sound in a medium containing ideal gas is NOT dependent on:

Weather, Atmosphere and Temperature PYQ
a Density
b Moisture
c Pressure
d Temperature
132

A tuning fork having angular frequency equal 440Hz produces sound waves which travel with the speed of 340 m/s. What is the separation between a compression and the adjacent rarefaction of the sound waves?

Financial Action Task Force (FATF) PYQ
a 0.57 m
b 0.67 m
c 0.77 m
d 0.87 m
133

A police car, with its siren on, is moving towards a stationary listener. How does the stationary listener receive the frequency of the sound emitted by the siren? It

International Criminal Police Organization (INTERPOL) PYQ
a Decreases
b Increases
c Stays the same
d Varies randomly
134

In an adiabatic process, how does the temperature of a gas change as its volume decreases?

Weather, Atmosphere and Temperature PYQ
a The temperature decreases
b The temperature increases
c The temperature remains constant
d The temperature first increases then decreases
135

During an isothermal expansion of an ideal gas, which of the following statement is true?

Weather, Atmosphere and Temperature PYQ
a The internal energy of the gas increases
b Pressure and temperature of the gas increase
c The temperature of the gas remains constant
d The work done by the gas is zero
136

Consider an ideal gas confined to the cylinder with a fixed piston, on heating the gas, all the heat supplied increases:

International Atomic Energy Agency (IAEA) PYQ
a Kinetic energy of the molecules
b Potential Energy of the molecules
c The intermolecular forces between gas molecules
d The number of gas molecules
137

What is the increase in force between two charges if the separation between them is decreased by 50 percent?

Time Zones and Latitude–Longitude PYQ
a Becomes four times
b Doubles
c Increases by half
d Triples
138

According to Coulomb's law, what happens to the electrostatic force between the 2-point charges if the distance between them is doubled?

Financial Action Task Force (FATF) PYQ
a The force becomes one-fourth
b The force becomes half
c The force doubles
d The force remains the same
139

What does one Coulomb represent in terms of charge?

Financial Action Task Force (FATF) PYQ
a The amount of charge transported by a current of 1 Ampere in 1 second
b The charge of 1 proton
c The charge of 1 electron
d The charge required to create a force of 1 Newton between two charges separated by 1 meter
140

Two points charges, +5µC and -5µC are placed at points A and B, respectively, which are separated by a distance 2d. What is the electric potential at the midpoint M of the line joining A and B?

Highest and Lowest Points PYQ
a 2kQ/d
b kQ/d
c -kQ/d
d zero
141

In the case of a parallel plate capacitor, when the distance between the two plates is reduced to half and the area of the plate doubled, the capacitance:

Area, Population and Official Languages PYQ
a Increases four times
b Increases six times
c Is doubled
d Remains the same
142

If the dielectric material between the plates of the capacitor is removed, what happens to the electric field between the plates?

Guinness World Records (General Knowledge Focus) PYQ
a The electric field becomes zero
b The electric field decreases
c The electric field increases
d The electric field remains the same
143

Capacitance of a capacitor increases with a decrease in:

Area, Population and Official Languages PYQ
a Dielectric constant
b Plate area
c Permittivity
d Plate separation
144

The I-V Graph for a non-Ohmic material is always:

Guinness World Records (General Knowledge Focus) PYQ
a Curved
b Horizontal
c Linear
d Perpendicular
145

Temperature coefficient of resistance is defined as increase in resistance per ohm original resistance per ______ ?

Weather, Atmosphere and Temperature PYQ
a Degree rise in temperature
b Unit increase in electric current
c Unit decrease in capacitance
d Degree drop in temperature
146

For metals, the temperature coefficient of resistance is:

Weather, Atmosphere and Temperature PYQ
a Infinity
b Negative
c Positive
d Zero
147

If R1 and R2 are respectively the filament resistance of a 100-Watt bulb and 200-Watt bulb designed to operate on the same voltage, then power of:

Time Zones and Latitude–Longitude PYQ
a R1 is two times R2
b R2 is two times R1
c R2 is four times R1
d R1 is four times R2
148

The maximum power transfer theorem states that maximum power is delivered to the load when:

Economic Community of West African States (ECOWAS) PYQ
a The load resistance is half of the source resistance
b The load resistance is zero
c The load resistance is double the source resistance
d The load resistance is equal to the source resistance
149

Electron Volt (eV) is another unit of:

International Atomic Energy Agency (IAEA) PYQ
a Charge
b Current
c Energy
d Power
150

An electron is moving perpendicular to the magnetic field, which of the following is correct statement about electromagnetic force acting on the electron?

Financial Action Task Force (FATF) PYQ
a Force acting is equal to electron charge
b Force acting is equal to the magnetic field strength
c Force acting is maximum
d Zero force is acting on it
151

For a positive charged particle (q) moving with a velocity (v) in a magnetic filed of flux density B, the force (F) acting on the charge particle is given by the expression?

Financial Action Task Force (FATF) PYQ
a q = Fv × B
b F = qv × B
c F = v × B / q
d q = v × B / F
152

Which of the following statement is true about the magnetic field inside a solenoid?

Guinness World Records (General Knowledge Focus) PYQ
a It is along the axis of the coil
b It is circular around the wires
c It is zero when current flows through it
d It is strongest at the ends of the solenoid
153

One-meter-long copper rod is moving with speed 20 m/sec in the magnetic field of strength 0.6 tesla what is the value of induced emf?

Guinness World Records (General Knowledge Focus) PYQ
a 12 V
b 19.4 V
c 25 V
d 20.6 V
154

The inductance of a coil depends on.

Guinness World Records (General Knowledge Focus) PYQ
a Number of turns
b Resistance of the wire used
c Type of insulation used on the wire
d Voltage applied to the coil
155

The direction of induced current is determined by?

Guinness World Records (General Knowledge Focus) PYQ
a Ampere's law
b Faraday's law
c Lenz's law
d Ohm's law
156

Lenz's law is consistent with the:

International Atomic Energy Agency (IAEA) PYQ
a Ampere's law
b Faraday's law
c Law of conservation of energy
d Ohm's law
157

The basic principle behind the operation of the transformer is.

Basic World Statistics PYQ
a Coulomb's law
b Electromagnetic induction
c Hess's law
d Gas's Law
158

When the PN junction is reverse-biased, its reverse current is of the order of:

Guinness World Records (General Knowledge Focus) PYQ
a Gigaamperes
b Kiloamperes
c Megaamperes
d Microamperes
159

The momentum of moving photon is:

Guinness World Records (General Knowledge Focus) PYQ
a mc²
b λ / h
c h / λ
d zero
160

In every instant of time, wavelength associated with a freely falling body:

Time Zones and Latitude–Longitude PYQ
a Decreases
b Increases two times
c Increases four times
d Remains constant
161

As per 2nd photoelectric experiment, photoelectric effect does not occur if the frequency of the incident light is?

Time Zones and Latitude–Longitude PYQ
a Below the threshold frequency
b Equals the threshold frequency
c Three times the threshold frequency
d Twice the threshold frequency
162

If an electron in the hydrogen atom jumps from second to first orbit, the emitted radiation has a wavelength of?

Guinness World Records (General Knowledge Focus) PYQ
a 4/3RH
b 3/4RH
c 4RH
d RH
163

Black body is an ideal radiator that radiates at all wavelengths:

Guinness World Records (General Knowledge Focus) PYQ
a Inconsistently
b Distinctly
c Equally
d Unequally
164

Mass number A refers to ______.

Guinness World Records (General Knowledge Focus) PYQ
a Number of electrons
b Number of nucleons
c Number of neutrons
d Number of protons
165

λ is a ______ constant:

Guinness World Records (General Knowledge Focus) PYQ
a Decay
b Dielectric
c Plank's
d Proportionality
166

Gamma ray camera can observe radiations from the ______ that are concentrated in the organs.

Guinness World Records (General Knowledge Focus) PYQ
a Atoms
b Isotopes
c Nucleons
d Neutrons
167

A car is moving in a circular path at a constant speed. What provides the necessary centripetal force to keep the car moving in this path?

United Nations Framework Convention on Climate Change (UNFCCC) PYQ
a The car's inertia resisting any change in direction
b The car's mass pulling it towards the centre of the circle
c The engine's power pushing the car forward
d The friction between the tyres and the road
168

Which of the following pairs correctly matches a physical quantity with its SI unit?

International Atomic Energy Agency (IAEA) PYQ
a Energy- Newton
b Force - Joule
c Power- Watt
d Velocity-m/s²
169

_____ is the natural tendency of an object to remain at rest or in motion with constant velocity?

Natural Resources PYQ
a Friction
b Inertia
c Mass
d Weight
170

A car in motion hits and gets crashed into a tree trunk, what is NOT conserved?

International Atomic Energy Agency (IAEA) PYQ
a Kinetic energy alone
b Momentum alone
c Momentum and kinetic energy both
d Neither kinetic energy nor momentum
171

The vertical and horizontal component of the projectile motion are:

Commonwealth of Independent States (CIS) PYQ
a Correlated with each other
b Dependent on each other
c Independent of each other
d Associated with each other
172

A ball is kicked horizontally from the top of a 10m high cliff with an initial speed of 15m/s. After 2 seconds, which of the following statement describes the ball's horizontal and vertical components?

United Nations High Commissioner for Refugees (UNHCR) PYQ
a The horizontal velocity is 15m/s while vertical velocity is 20m/s downwards
b The horizontal velocity is 15m/s while vertical velocity is 15m/s downwards
c The horizontal velocity is 30m/s while vertical velocity is 20m/s downwards
d The horizontal velocity is 15m/s while vertical velocity is 0m/s
173

How does an angle between the force applied and the direction of motion influence the work done on an object?

Financial Action Task Force (FATF) PYQ
a Work is constant regardless of the angle
b Work is maximum when the angle is 0°
c Work is negative when the angle is 90°
d Work is 0 when the angle is 45°
174

A nurse is pushing a wheelchair with an 80kg patient sitting on it. How much work is done by the patient's weight?

Guinness World Records (General Knowledge Focus) PYQ
a Half of the work
b Maximum work
c Minimum work
d No work
175

If a constant force of 10N is applied to move an object 5m in the direction of the force, what is the work done?

Financial Action Task Force (FATF) PYQ
a 2 J
b 5 J
c 15 J
d 50 J
176

The escape velocity of a body in the gravitational field of Earth is dependent on:

Guinness World Records (General Knowledge Focus) PYQ
a Angle on which it is thrown
b Both mass of the body and the angle at which it is thrown
c Mass of earth
d Mass of the body
177

Choose the sentence with the correct tense and sentence structure:

Football PYQ
a He is going to the market yesterday.
b I had been waiting for the bus, and it arrives.
c She will finish her homework before she went to bed.
d They were playing football when it started to rain.
178

Choose the correct sentence.

Guinness World Records (General Knowledge Focus) PYQ
a My father was talking to his friend on mobile phone when I fall from the bicycle.
b My father is talking to his friend on mobile phone when I fall from the bicycle.
c My father was talking to his friend on mobile phone when I fell from the bicycle.
d My father was talking to his friend on mobile phone when I am falling from the bicycle.
179

Choose the correct sentence:

Guinness World Records (General Knowledge Focus) PYQ
a She didn't knew about the surprise party.
b She hasn't knew about the surprise party.
c She didn't know about the surprise party.
d She doesn't know about the surprise party.
180

After she ______ the stairs, her heart almost gave out from exhaustion.

Most Repeated GK MCQs from Past Papers PYQ
a Has climbed
b Have climbed
c Had climbed
d Was climbing
181

Punctuate the given sentence correctly. The teacher asked did you complete your homework?

Guinness World Records (General Knowledge Focus) PYQ
a The teacher asked, did you complete your homework?
b The teacher asked, "Did you complete your homework?"
c The teacher asked, "did you complete your homework".
d The teacher asked, did you complete your homework.
182

Punctuate the following sentence correctly.Lets meet at Sarahs house after school

Guinness World Records (General Knowledge Focus) PYQ
a Let's meet at Sarah's house after school.
b Let's meet at Sarahs' house after school.
c Lets meet at Sarah's house after school.
d Let's meet, at Sarah's house after school.
183

Do you usually take a bus______the market?

Common Market for Eastern and Southern Africa (COMESA) PYQ
a By
b For
c Of
d To
184

He has been working ______ this project for two weeks.

Guinness World Records (General Knowledge Focus) PYQ
a At
b By
c To
d On
185

Identify the sentence that contains an ERROR in word order, style, or vocabulary:

United Nations Environment Programme (UNEP) PYQ
a He has a talent for solving complex problems.
b She enjoys reading, writing, and to paint.
c The quick brown fox jumps over the lazy dog.
d They quickly adapted to the new environment.
186

Identify the ERROR in the sentence: The chef quickly prepared, delicious and it served a meal.

Guinness World Records (General Knowledge Focus) PYQ
a Punctuation
b Style
c Vocabulary
d Word order
187

Order is the law of civilization as chaos is the law of the ______. The most appropriate word to be filled in is:

Most Repeated GK MCQs from Past Papers PYQ
a City
b Metropolis
c Universe
d Wilderness
188

Blueprint is to architect as algorithm is to______.

United Nations Development Programme (UNDP) PYQ
a Designer
b Engineer
c Physician
d Programmer
189

"Regular exercise has been shown to improve overall health by reducing the risk of chronic diseases, such as heart disease and diabetes. Additionally, exercise enhances mental well-being by reducing stress, anxiety, and depression. Despite these benefits, many people find it challenging to maintain a consistent exercise routine due to busy schedules and a lack of motivation." Based on the paragraph, which of the following statements can be inferred?

World Leaders in News PYQ
a Busy schedules and lack of motivation are barriers to regular exercise.
b Chronic diseases cannot be prevented by regular exercise.
c People who exercise regularly never experience stress or anxiety.
d Exercise is only beneficial for physical health, not mental health.
190

Which of the following words is a synonym for "meticulous"?

Guinness World Records (General Knowledge Focus) PYQ
a Abhorrent
b Heedless
c Incautious
d Precise
191

A person who sells goods and services is a ______.

World Leaders in News PYQ
a Consumer
b Purchaser
c Patron
d Vendor
192

The detective noticed a subtle change in the suspect's tone when he asked about his whereabouts on the night of the crime, which hinted at something more significant. What does "subtle" most likely mean?

Drama PYQ
a Dramatic
b Notable
c Obvious
d Slight
193

Despite the complicated situation, she remained ______, calmly assessing her options before deciding. Fill in the blank with the appropriate choice:

World Leaders in News PYQ
a Composed
b Erratic
c Frantic
d Hysterical
194

Find out synonym of "Elated"?

Guinness World Records (General Knowledge Focus) PYQ
a Confused
b Nervous
c Disappointed
d Overjoyed
195

Read the following statements and identify the best cause-and-effect relation:i. Sara's productivity at work has significantly decreased over the past month.ii. Sara has been experiencing frequent interruptions due to ongoing construction work near her office. Which of the following best describes the cause-and-effect relationship?

Office of the United Nations High Commissioner for Human Rights (OHCHR) PYQ
a Sara's decreased productivity is causing the construction work.
b The ongoing construction work is causing Sara's decreased productivity.
c Sara's productivity was already decreasing before the construction work began.
d The construction work is unrelated to Sara's productivity.
196

A store offers a 10% discount on all items. After applying the discount, the price of an item is Rs. 450. What was the original price of the item?

World Leaders in News PYQ
a Rs. 490
b Rs. 495
c Rs. 500
d Rs. 505
197

I went 10m to the East from my house, then turned north and walked another 15m, and then I turned west and covered 12m, and then turned south and covered 15m. How far am I from my house?

North Atlantic Treaty Organization (NATO) PYQ
a 0 m
b 1 m
c 2 m
d 3 m
198

If a>b, b>c, and d>a then?

Guinness World Records (General Knowledge Focus) PYQ
a b
b a
c b>d
d c>d
199

Find out the missing term in the sequence: 15, 14, 12, 9 ?

Guinness World Records (General Knowledge Focus) PYQ
a 5
b 6
c 7
d 8
200

All omnivores are herbivores. No herbivores are carnivores. Some carnivores are humans. Which of the following conclusions are TRUE? CONCLUSIONS:I. Some humans are carnivores.II. No carnivores are omnivores.III. Some omnivores are carnivores.

United Nations Human Settlements Programme (UN-Habitat) PYQ
a I and II
b I and III
c II and III
d III

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Topic Weightage

Guinness World Records (General Knowledge Focus) 52%
Financial Action Task Force (FATF) 10.5%
International Atomic Energy Agency (IAEA) 4.5%
Weather, Atmosphere and Temperature 4.5%
World Leaders in News 3%
Central American Integration System (SICA) 2.5%
Natural Resources 2%
Earth’s Structure and Geological Features 2%
Time Zones and Latitude–Longitude 2%
Group of Seven (G7) 1.5%
United Nations Framework Convention on Climate Change (UNFCCC) 1%
Multi-Polar World 1%
Highest and Lowest Points 1%
Area, Population and Official Languages 1%
Most Repeated GK MCQs from Past Papers 1%
Common Market for Eastern and Southern Africa (COMESA) 0.5%
United Nations Environment Programme (UNEP) 0.5%
United Nations Development Programme (UNDP) 0.5%
Drama 0.5%
Office of the United Nations High Commissioner for Human Rights (OHCHR) 0.5%
Post Cold War World 0.5%
North Atlantic Treaty Organization (NATO) 0.5%
United Nations Human Settlements Programme (UN-Habitat) 0.5%
Changed Names of Countries and Cities 0.5%
International Federation of Red Cross and Red Crescent Societies (IFRC) 0.5%
Freedom Movements & Decolonization 0.5%
World Intellectual Property Organization (WIPO) 0.5%
European Free Trade Association (EFTA) 0.5%
Important Lines and Boundaries 0.5%
Industrial Revolution 0.5%
International Criminal Police Organization (INTERPOL) 0.5%
Economic Community of West African States (ECOWAS) 0.5%
Basic World Statistics 0.5%
Commonwealth of Independent States (CIS) 0.5%
United Nations High Commissioner for Refugees (UNHCR) 0.5%
Football 0.5%