set 7 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 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

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

In which of the following conditions wet clothes will dry earliest?

a) 100% RH, 20ºC temperature

b) 20% RH, 20ºC temperature

c) 100% RH, 60ºC temperature

d) 20% RH, 60ºC temperature

Answer: (d)

Question : 2

‘Raman effect’ deals with the light rays passing through

a) Only diamonds

b) Only prisms

c) Only fluids

d) All transparent medium

Answer: (d)

Question : 3

Expansion during heating

a) decreases the density of a material

b) occurs only in solids

c) increases the weight of a material

d) occurs at the same rate for all liquids and solids

Answer: (a)

Solids, liquids and gases all expand on being heated as a result,

Density = (mass/volume) decreases.

Question : 4

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)

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