Guinness MCQs for Khuddam-ul-Hujjaj/ Nazims

Guinness World Records (General Knowledge Focus) MCQs with Answers & Explanations (Page 53)

Practice verified Guinness World Records (General Knowledge Focus) MCQs with Answers & Explanations for Khuddam-ul-Hujjaj/ Nazims for Hajj (OTS 2027 - Includes All NTS Past Papers) preparation. Featuring solved questions, detailed explanations, and past paper answers (Page 53).

World Records & Superlatives · General Knowledge

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10583 Questions

1041

The tautomer of propanol is:

A. Propanal B. Propanone C. Methyl ethyl ether D. Butanone

1042

The substituent attached to the benzene ring that act as ring deactivator is:

A. NO₂ B. COOH C. Cl D. NH₃

1043

The specific heat of water is:

A. 4.2 kJ/mol/k B. 4.2 J/g-k C. 4.6 J/g/k D. 42 J/g/k

1044

The SI unit of pressure is:

A. Pascal B. mmHG C. Torr D. Atm

1045

The number of particles(atoms, molecules, ions) in one mole of any substance is numerically equal to?

A. 6.023 x 10²³ B. 6.023 x 10²⁵ C. 4.02 x 10²³ D. 4.02 x 10²⁵

1046

The final substitution product in the chlorination of methane in the presence of UV light and excess chlorine is?

A. Methylene chloride B. Carbon tetrachloride C. Methylene dichloride D. Chloroform

1047

The element chlorine is found in a gaseous state while bromine is found in?

A. Solid state B. Liquid state C. Crystalline forms D. Condensed form

1048

The correct sequence according to acidity of alcohols is?

A. Primary > secondary > tertiary B. Tertiary > secondary > primary C. Secondary > primary > tertiary D. Primary < secondary < tertiary

1049

The correct order of reactivity of alkyl halides is :

A. R-Br > R-Cl > R-F > R-l B. R-Br > R-F > R-I > R-Cl C. R-I> R-Br > R-Cl > R-F D. R-Cl > R-I > R-Br > R-F

1050

Silver Mirror with Tollens reagent is formed by?

A. Acid halides B. Alcohols C. Ketones D. Aldehydes

1051

Select the correct IUPAC name among the following?

A. 2-Bromo-4-chloro-3-iodopentane B. 4-bromo-2-chloro-3-iodopentane C. 4-bromo-2-iodo-3-chloropentane D. 2-chloro-3-iodo-4-bromopentane

1052

Oxidation of secondary alcohol gives which of the following product?

A. Aldehyde B. Carboxylic acids C. Ester D. Ketone

1053

One molecule of oxygen has the same mass as?

A. 8 moles of helium B. 16 moles of H₂ C. 2 molecular of CH₄ D. One gram atom of Sulphur

1054

In presence of which of the following wolf-kishner reduction of aldehydes is carried out?

A. Glycol with KOH B. H₂ with Pd C. LiAlH₄ in water D. Zn-Hg with HCl

1055

In following molecules which one has shortest C-C bond length:

A. C₂H B. C₃H₈ C. C₂H₈ D. C₂H₂

1056

H₂O has geometry?

A. regular tetrahedrom B. Linear C. Distorted tetrahedral D. Pyramidal

1057

Flame tests identify alkali metals when they are burnt. Which of the combination given is the correct one?

A. Li : red B. Na : lilac C. K: red D. Cs: yellow

1058

Enantiomers are examples of?

A. Cis isomers B. Trans isomers C. Optical isomers D. Geometric isomers

1059

Compound X reacts with Grignard's reagent to produce tertiary alcohols. Which is the compound?

A. Aldehyde B. Ketone C. Acid halide D. Carboxylic acid

1060

Brass is an alloy of?

A. Copper and iron B. Copper and magnesium C. Copper and zinc D. Copper and silver

Guinness World Records (General Knowledge Focus) MCQs with Answers & Explanations (Page 53)

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