☰ Everyday Science (General Science) - MCQs

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Q37.

An object covers distance which is directly proportional to the square of time. Its acceleration is-

  • A. Constant
  • B. Zero
  • C. Increasing
  • D. Decreasing
    ✍ Discuss    
Q38.

We feel cool, when we sit near the fan, this is because-

  • A. Fan gives cool air
  • B. We feel cool when air touches the body
  • C. Fan cools surrounding air
  • D. Air vaporates the sweat on our body
    ✍ Discuss    
Q39.

The Dynamo converts-

  • A. Mechanical energy to electrical energy
  • B. Electrical energy to mechanical energy
  • C. Mechanical energy into magnetic energy
  • D. None of these
    ✍ Discuss    
Q40.

Rainbow is formed due to-

  • A. Scattering and refraction
  • B. Refraction and reflection
  • C. Diffraction and refraction
  • D. Refraction and dispersion
    ✍ Discuss    
Q41.

If a body moves with a constant speed in a circle-

  • A. No work is done on it
  • B. No force act on it
  • C. Its velocity remains produced in it
  • D. No acceleration is priduced in it
    ✍ Discuss    
Q42.

The unit of noise pollution is-

  • A. ppm
  • B. decimal
  • C. decible
  • D. None of these
    ✍ Discuss    
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