Guinness MCQs for Khuddam-ul-Hujjaj/ Nazims

1821

The scalar or Dot product of Vectors (3i-2j+4k) and (2i+2j-3k) is ______.

A. -9 B. -10 C. -11 D. 10

1822

The formula for Paschen series for Hydrogen spectrum is ______.

A. 1/λ=RH (1/2² - 1/n²); n=3,4,5… B. 1/λ=RH (1/1² - 1/n²); n=2,3,4,5… C. 1/λ=RH (1/4² - 1/n²); n=5,6,7… D. 1/λ=RH (1/3² - 1/n²); n=4,5,6…

1823

The necessary condition for the Boyle's law to hold is that the process must be ______.

A. Isobaric B. Adiabatic C. Isochoric D. Isothermal

1824

If µo is permeability of the medium and so is permittivity of the medium then value of √1/µoco is equal to ______.

A. Planks constant B. Speed of sound waves C. Speed of ultrasound waves D. Speed of light

1825

In a step up transformer ______.

A. Vs > Vp while ls > lp B. Vs lp C. Vs = Vp while ls > lp D. Vs > Vp while ls < lp

1826

If compressible medium has bulk modulus denoted by B and density denoted by ρ, then the Newton formula for speed of sound in medium is ______.

A. V=√B/p B. V=√Bρ C. V=Bρ D. V=√ρ/B

1827

A car starts from rest and moves with constant acceleration. During the 4th second of its motion, it covers a distance of 21 meters. The acceleration of the car is ______ ms\(^{-2}\).

A. 04 B. 06 C. 08 D. 16

1828

An electron is moving with velocity v and has momentum \( 3x10^{-26} \, \text{kg.m/s} \). The de Broglie wavelength associated with it is ______. Value of h = 6.63 x \( 10^{-34} \, \text{Js} \)

A. 22.1nm B. 24.1nm C. 22.1μm D. 22.1mm

1829

The vector product of two vectors A and B is ______ vectors A and B.

A. equal to the product of magnitudes of B. in the plane parallel to C. perpendicular to the plane containing D. less in magnitude than the product of magnitudes of

1830

A battery of 12 volts is connected to three resistors of 4 Ohm, 5 Ohm, and 3 Ohm joined together in parallel. The current through the 3 Ohm resistance is ______.

A. 1.0 A B. 2.5 A C. 3.0 A D. 4.0 A

1831

A traveling wave, in which the particles of the distributed medium move parallel to the direction of propagation of the wave, is called:

A. Transverse wave B. Circular waves C. Longitudinal wave D. Stationary waves

1832

Her hair was hanging ______ her back.

A. Beyond B. By C. Down D. From

1833

We must ______ back by six o'clock.

A. Be B. Can C. Has D. Have

1834

Birds usually ______ eggs in their nests.

A. Laid B. Lain C. Lay D. Lie

1835

As an excretory organ, liver:

A. Detoxifies many chemical poisons B. Produces ammonia for excretion by the kidneys C. Produces urine and uric nitrogen of amino acids D. All of above

1836

Which of the following muscles are considered as "Voluntary Muscles"?

A. Smooth muscles B. Cardiac muscles C. Skeletal muscles D. Glandular muscles

1837

Which types one of the following "myogenic" type of muscle?

A. Smooth muscles B. Cardiac muscles C. Skeletal muscles D. Glandular muscles

1838

What do we call the cell surface membrane of a muscle fiber?

A. Sarcolemma B. Plasma membrane C. Sarcoplasm D. Myofibrils

1839

Which of the following neurotransmitters function, both neurotransmitter and hormones, decreasing our perception of pain?

A. Epinephrine B. Serotonin C. Dopamine D. Endorphins

1840

Neurons are cells adapted for the rapid transmission of electrical impulses. To do this, they have long thin process called:

A. Axons B. Dendrites C. Myelin sheath D. Schwann cells

Guinness World Records (General Knowledge Focus) MCQs with Answers & Explanations (Page 92)

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