Tag: science & technology

Questions Related to science & technology

Pa(Pascal) is the unit for
general knowledge science & technology

  1. thrust

  2. pressure

  3. frequency

  4. conductivity

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Correct Option: B

Planets do not twinkle because
general knowledge science & technology

  1. they emit light of a constant intensity

  2. their distance from the earth does not change with time

  3. they are very far away from the earth resulting in decrease in intensity of light

  4. they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable

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Correct Option: D

Metals are good conductors of electricity because
general knowledge science & technology

  1. they contain free electrons

  2. the atoms are lightly packed

  3. they have high melting point

  4. All of the above

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Correct Option: A

Let a thin capillary tube be replaced with another tube of insufficient length then, we find water
general knowledge science & technology

  1. will overflow

  2. will not rise

  3. depressed

  4. change its meniscus

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Correct Option: B

Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?
general knowledge science & technology

  1. Pressure and Young's modules

  2. Planck's constant and Angular momentum

  3. Impulse and moment of force

  4. Force and rate of change of linear momentum

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Correct Option: C

If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same

general knowledge science & technology

  1. velocity

  2. momentum

  3. acceleration

  4. kinetic energy

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Correct Option: B

Pick out the scalar quantity
general knowledge science & technology

  1. force

  2. pressure

  3. velocity

  4. acceleration

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Correct Option: B

Rectifiers are used to convert
general knowledge science & technology

  1. Direct current to Alternating current

  2. Alternating current to Direct current

  3. high voltage to low voltage

  4. low voltage to high voltage

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Correct Option: B

out of the following, which is not emitted by radioactive substance?

general knowledge science & technology

  1. Electrons

  2. Electromagnetic radiations

  3. Alpha particles

  4. Neutrons

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Correct Option: D

Sound waves in air are
general knowledge science & technology

  1. transverse

  2. longitudinal

  3. electromagnetic

  4. polarised

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Correct Option: B