set 6 MCQ Questions & Answers Detailed Explanation

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

Questions : The terminal colour bands of the rainbow are

(a) Yellow and Green

(b) Green and Red

(c) Blue and Orange

(d) Violet and Red

The correct answers to the above question in:

Answer: (d)

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

Question : 1

Match list I with list II and select the correct answer using the codes given below the lists.

List I List II
A. Direct conversion of vapours into solid 1. Sublimation
B. Direct conversion of a solid into vapours 2. Hoar frost
C. The phase change from liquid to vapour 3. Condensation
D. The phase change from vapour to liquid 4. Vaporisation
Choose the correct option from the codes given below :

a) A – 3, B – 1, C – 2, D – 4

b) A – 2, B – 3, C – 4, D – 1

c) A – 2, B – 1, C – 4, D – 3

d) A – 3, B – 4, C – 1, D – 2

Answer: (c)

Hoar frost is an example of the direct conversion of vapour into solid.

Sublimation is the process of the conversion of solids to a gaseous state.

Condensation is the process of conversion of gases to a liquid state on cooling.

Evaporation is the process of conversion of liquid into a gaseous state.

Question : 2

In order to avoid Sunlight, which of the following colour combination for an umbrella is most appropriate?

a) Only black

b) Top white and bottom black

c) Top black and bottom white

d) Only white

Answer: (b)

Question : 3

The graph given above indicates change in temperature (Dt) when heat (Q) was given to a substance. Which among the following parts of the graph correctly depict the latent heat of the substance?

sound oscillations heat thermodynamics question answer 47

a) BC and DE

b) AB and BC

c) CD and DE

d) DE and AB

Answer: (a)

Question : 4

The image formed on Retina is

a) Smaller than object but inverted

b) Smaller than object but straight

c) Equal to object but inverted

d) Equal to object but straight

Answer: (a)

Question : 5

Cooling is done by

a) Release of compressed gas

b) Cooking gas

c) Flow of water

d) Melting the solid

Answer: (a)

Question : 6

What temperature is the same on celsius scale as well as on Fahrenheit scale?

a) – 32°C

b) – 212°C

c) – 40°C

d) 32°C

Answer: (c)

$C/5 = {F - 32}/9$ Here C = F

$C/5 = {F - 32}/9$ ⇒ 9C = 5C – 160

4C = – 160 ⇒ C = – 40°C.

Thus at –40°C and –40° F the temperture is same.

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