set 16 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 : Which of the following qualities are useful for a cooking utensil?

(a) Low specific heat and low thermal conductivity

(b) High specific heat and high thermal conductivity

(c) High specific heat and low thermal conductivity

(d) Low specific heat and high thermal conductivity

The correct answers to the above question in:

Answer: (d)

A cooking utensil must heat up quickly and must transmit heat rapidly. Hence, it must have low specific heat and high thermal conductivity.

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

Question : 1

Consider the following natural phenomena.

  1. Terrestrial heating
  2. Reflection of light
  3. Refraction of light
  4. Diffraction of light
Due to which of these phenomena is mirage formed?

a) 1 and 3

b) 2, 3 and 4

c) 1 and 2

d) Only 4

Answer: (a)

Question : 2

Which one of the following is used for determining the structure of crystal?

a) UV rays

b) X-rays

c) Gamma rays

d) Visible lights

Answer: (b)

Question : 3

Two holes of unequal diameters d1 and d2 (d1 > d2 ) are cut in a metal sheet. If the sheet is heated,

physics mechanics mcq question answer 30 hint

a) d1 will increase, d2 will decrease

b) both d12 will decrease

c) both d1 and d2 will increase

d) d1 will decrease, d2 will increase

Answer: (c)

When a body is heated, the distance between any two points on it increases. The increase is in the same ratio for any set of two point.

Question : 4

The most important function of perspiration is to

a) Regulate body water supply

b) Get rid of body poison

c) Regulate body temperature

d) Keep the skin pores clear of dirt

Answer: (c)

Question : 5

Which of the following statements is not true?

a) Air-conditioner and Air-cooler both maintain humidity

b) Air-conditioner maintains humidity but Air-cooler does not maintain humidity

c) Air-conditioner and Air-cooler both maintain temperature

d) Both control motion of air

Answer: (a)

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