## Specific Heat - MCQ - Basic Level

Physics is an important subject in preparation for various Competitive exams. To keep a track of your preparation we have designed a small quiz of Basic Level Questions on Specific Heat. You have 10 minutes to solve the quiz, click the start timer button in order to start the timer and then click on submit button at the end to submit the quiz and view your scores and correct answers.

Q1. Universal gas constant is

•  Cp/Cv
•  Cp - Cv
•  Cp + Cv
•  Cv/Cp

Q2. The specific heat of an ideal gas is

•  Proportional to T
•  Proportional to T2
•  Proportional to T3
•  Independent to T

Q3. If the degree of freedom of a gas are f, then the ratio of two specific heats Cp / Cv is given by

•  2/f + 1
•  1 - 2/f
•  1 + 1/f
•  1 - 1/f

Q4. The value of Cv for one mole of neon gas is

•  1/2 R
•  3/2 R
•  5/2 R
•  7/2 R

Q5. The specific heat of a gas at constant pressure is greater than that of the same gas at constant volume because

•  At constant pressure work is done in expanding the gas against constant external pressure
•  At constant volume work is done when pressure increases
•  The molecular agitation increases at constant pressure
•  The molecular agitation decreases at constant volume

Q6. The specific heat of 1 mole of an ideal gas at constant pressure (Cp) and at constant volume (Cv) which is correct

•  Cp of hydrogen gas is 5/2 R
•  Cv of hydrogen gas is 7/2 R
•  √H2 has very small values of Cp and Cv
•  1/√Cp - Cv = 1.99 cal/mole - K for H2

Q7. In gases of diatomic molecules, the ratio of the two specific heats of gases Cp/Cv is

•  1.66
•  1.40
•  1.33
•  1.00

Q8. When an ideal monoatomic gas is heated at constant pressure, the fraction of heat energy supplied which increases the internal energy of the gas is

•  2/5
•  3/5
•  3/7
•  3/4

Q9. If R is gas constant and Cp and Cv are specific heats for a solid per mole, then for the solids

•  Cp - Cv = R
•  Cp - Cv << R
•  Cp - Cv = 0
•  Cp - Cv is negative

Q10. When two moles of oxygen is heated from 0°C to 10°C at constant volume, its internal energy changes by 420 J. What is the molar specific heat of oxygen at constant volume

•  5.75 J-K-1 mol-1
•  10.5 J-K-1 mol-1
•  21 J-K-1 mol-1
•  42 J-K-1 mol-1

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