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 [PCS (Pre) 2005]

Pressure cooker cooks food in lesser time because

a) Air has no effect as it is closed from all sides

b) Temperature of boiling water increases due to high pressure

c) The temperature of boiling water decreases due to high pressure

d) Evaporation of the water used is very small

Answer: (b)

Question : 7 [PCS (Pre) 2010]

What is absolute zero temperature?

a) Theoretically the lowest possible temperature

b) The temperature at which the vapour of any liquid substance is condensed

c) The starting point of any temperature scale

d) The temperature at which all material are in vapour form

Answer: (a)

Question : 8 [UP UDA/LDA (Spl)(Mains) 2010]

If Va, Vw and Vs respectively are the speed of sound in air, water and steel, then

a) Vs < Vw < Va

b) Vw < Vs < Va

c) Va < Vw < Vs

d) Vs < Va < Vw

Answer: (c)

Question : 9 [UPPCS (Mains) 2008]

Which of the following is used to take 3-dimensional pictures?

a) Radiography

b) Holography

c) Photography

d) None of these

Answer: (b)

Question : 10 [UPPCS (Pre) 2007]

When T.V. is switched on

a) Audio is heard immediately but video starts later because video needs some warm up time

b) Video starts immediately but audio is heard later because sound travels at a lesser speed than light

c) Audio and video both start simultaneously

d) It depends on the T.V. brand

Answer: (c)

IMPORTANT general science mcq EXERCISES

set 12 Online Quiz

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1650 heat wave motion sound optics oscillations based general science mcq set 12 question answer pdf
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