light, heat, thermodynamics, wave motion, sound, optics & oscillations - Category wise Question and Answer Practice Test with Solutions

light, heat, thermodynamics, wave motion, sound, optics & oscillations PRACTICE TEST [16 - EXERCISES]

set 1

set 2

set 3

set 4

set 5

set 6

set 7

set 8

set 9

set 10

set 11

set 12

set 13

set 14

set 15

set 16

Question : 6

A : At high altitude regions the cooking of food becomes difficult. B : Water boils at lower temperature when the pressure is low.

a) A and B are correct and B is the correct explanation of A.

b) Both A and B are wrong.

c) A and B are correct and B is not the correct explanation of A.

d) A is correct but B is wrong.

Answer: (a)

Question : 7 [UPPCS (Pre) 1996]

What is the function of the thermostat of a refrigerator?

a) To increase the freezing point

b) To maintain constant temperature

c) To lower the temperature

d) To decrease the melting point

Answer: (b)

Question : 8 [RAS/RTS (Pre) 2012]

A biotechnique in which ultrasonic sound is used

a) E.C.G.

b) E.E.G.

c) Sonography

d) X-ray

Answer: (c)

Question : 9

‘The stars seem to be higher on the sky than they actually are’. This can be explained by

a) total internal reflection

b) atmospheric refraction

c) dispersion of light

d) diffraction of light

Answer: (b)

Due to atmospheric refraction the twinkling of star, and their position appear higher than the normal.

Question : 10 [RAS/RTS (Pre) 1996]

To keep drinks at the same temperature for quite sometime, the walls of thermos bottle are coated with

a) Lead Powder

b) Silver Layer

c) Aluminium Paint

d) Mercury Layer

Answer: (b)

IMPORTANT general science mcq EXERCISES

set 11 Online Quiz

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1649 heat wave motion sound optics oscillations based general science mcq set 11 question answer pdf
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