A Text Book of PHYSICS PART I : CLASS 11>Chapter 17 - Calorimetry and Change of State>EXERCISE>Q 42

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In a closed vessel, there is some water at $27 ° C$ over which air saturated with water vapour exists. The total pressure in the vessel at that temperature is $76 cm$ of $Hg$ . $S . V . P$ , vapour pressure at $27^{\circ} C = 2.8 cm$ . Pressure of air alone is

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Important Questions on Calorimetry and Change of State

EASY

11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 17 - Calorimetry and Change of State>EXERCISE>Q 43

It is difficult to cook rice in an open vessel by boiling it at high attitudes because of.

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 17 - Calorimetry and Change of State>EXERCISE>Q 44

A jar contains a gas and a few drops of water at

T K .

The pressure in the jar is

0.830 m

of mercury. The temperature of the jar is reduced by

1 %

. The saturated vapour pressure of water at the two temperatures are

30 \times 10^{- 3} m

and

25 \times 10^{- 3} m

of

Hg

. The new pressure in the jar is

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11th West Bengal Board

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 17 - Calorimetry and Change of State>EXERCISE>Q 45

Three bodies of the same material and having masses

m, m

and

3 m

temperatures

40 ° C, 50 ° C

and

60 ° C

respectively. If the bodies are brought in thermal contact, the final temperature will be