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Sail Through JEE: Thermal Properties of Matter

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Question 1

3 moles of a mono-atomic gas (λ = 5/3) is mixed 1 mole of a diatomic gas (λ = 7/3). The value of λ for the mixture will be

Question 2

Two temperature scales A and B are related $Description: E:\WBJEE\2011\2011_Physics_files\image156.png$ At which temperature two scales have the same reading?

Question 3

An electric heater of power 1000W raises the temperature of 5 kg of a liquid from 25 ºC to 31 ºC in 2 minutes. Heat capacity of the liquid is –

Question 4

When a hot liquid is mixed with a cold liquid, the temperature of the mixture –

Question 5

When vapour condenses into liquid -

Question 6

The specific heat of a metal at low temperatures varies according to S = aT³ where a is a constant and T is absolute temperature. The heat energy needed to raise unit mass of the metal from T = 1 K to T = 2 K is

Question 7

The graph shown in the figure represent change in the temperature of 5 kg of a substance as it absorbs heat at a constant rate of 42 kJ min^-1. The latent heat of vaporization of the substance is :

Question 8

One end of a 2.35m long and 2.0cm radius aluminium rod (K = 235 W.m–1K^-1) is held at 20°C. The other end of the rod is in contact with a block of ice at its melting point. The rate in kg. s^-1 at which ice melts is

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Jun 3JEE & BITSAT