AIPMT 2011 Mains | Heat and Thermodynamics Question 62 | Physics

A mass of diatomic gas $$(\gamma = 1.4)$$ at a pressure of 2 atmospheres is compressed adiabatically so that its temperature rises from 27^oC to 927^oC. The pressure of the gas in the final state is

8 atm

28 atm

68.7 atm

256 atm

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

When 1 kg of ice at 0^oC melts to water at 0^oC, the resulting change in its entropy, taking latent heat of ice to be 80 cal/^oC, is

273 cal/K

8 $$ \times $$ 10⁴ cal/K

80 cal/K

293 cal/K

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

During an isothermal expansion, a confined ideal gas does $$-$$ 150 J of work against its surroundings. This implies that

150 J of heat has been removed from the gas

300 J of heat has been added to the gas

no heat is transferred because the process is isothermal

150 J of heat has been added to the gas

AIPMT 2010 Mains

MCQ (Single Correct Answer)

-1

A monatomic gas at pressure P₁ and volume V₁ is compressed adiabatically to $${{1 \over 8}^{th}}$$ of its original volume. What is the final pressure of the gas?

64P₁

P₁

16P₁

32P₁

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