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Basic MCQs on thermodynamics | class 11 physics | advguruji/Physics Advocate

 Q1.

Melting and boiling are examples of -

A. adiabatic process

B. isobaric process

C. isothermal process

D. cyclic process


Q2.

For an isothermal process the change in internal energy is -

A. positive

B. negative

C. zero

D. infinite


Q3.

Specific heat capacity of any gas for isothermal process is -

A. zero

B. infinite

C. 1

D. log10⁵


Q4.

For a cyclic process the change in internal energy is -

A. positive

B. negative

C. Zero

D. infinite


Q5.

Which is not an extensive variable ?

A. Pressure

B. mass

C. volume

D. internal energy


Q6.

First law of thermodynamics is based on -

A. Law of conservation of momentum

B. Law of conservation of angular momentum

C. Law of conservation of mass

D. None of these


Q7.

The slope of pressure volume curve in an adiabatic process is -

A. Equal to the slope of isothermal process

B. 'γ' times the slope of isothermal process

C. "1/γ" times the slope of isothermal process

D. Negative to the slope of isothermal process


Q8.

An ideal gas of volume 0.0015 m³ and at pressure 1 × 10⁵ Pa is supplied with 70 J energy. The volume increases to 0.0017 m³ and the pressure remains constant. The internal energy of the gas is -

A. Increased by 90 J

B. Increased by 70 J

C. Increased by 50 J

D. Decreased by 50 J

Comment down your thoughts :-)

-------------------------------------------------------------------

ANSWERS

ANS1. C

ANS2. C          ANS3. B

ANS4. C

ANS5. A          ANS6. D

ANS7. B          ANS8. C

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