set 15 MCQ Questions & Answers Detailed Explanation

MOST IMPORTANT general science mcq - 16 EXERCISES

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The following question based on light, heat, thermodynamics, wave motion, sound, optics & oscillations topic of general science mcq

Questions : The diamond appears lustrous because of

(a) Total internal reflection

(b) Refraction

(c) Reflection

(d) Scattering

The correct answers to the above question in:

Answer: (a)

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Read more light heat thermodynamics wave sound optics oscillation Based General Science Questions and Answers

Question : 1

When a piece of ice floating in a glass of water melts, the level of water will

a) Rise

b) Remain same

c) Fall

d) Fall or rise depends on the temperature of water

Answer: (b)

Question : 2

The walls of the ball, built for music concerts should

a) Transmit sound

b) Reflect sound

c) Amplify sound

d) Absorb sound

Answer: (d)

Question : 3

Consider the following parts of spectra

  1. Visible
  2. Infrared
  3. Ultraviolet
  4. Microwave
Which one of the following is the correct sequence in which their wavelengths increase ?

a) 4 – 1 – 2 – 3

b) 4 – 3 – 1 – 2

c) 3 – 2 – 1 – 4

d) 3 – 1 – 2 – 4

Answer: (d)

Question : 4

The safest temperature for keeping food fresh in a refrigerator is

a) 8°C

b) 0°C

c) 4°C

d) 10°C

Answer: (c)

Question : 5

The Doppler’s effect is applicable for

a) Sound waves

b) Space waves

c) Light waves

d) Both (a) and (c)

Answer: (d)

Question : 6

A metal sheet with a circular hole is heated. The hole

a) remains of the same size

b) gets larger

c) gets smaller

d) gets deformed

Answer: (b)

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