Heat And Thermodynamics MCQs

Option A: 1.67

Option B: 1.4

Option C: γ = 1.3

Option D: None

Correct Answer: 1.4 ✔

Option A: isothermal

Option B: isochoric

Option C: isobaric

Option D: isentropic

Correct Answer: isothermal ✔

Option A: efficiency

Option B: coefficient of performance

Option C: both A and B

Option D: not described

Correct Answer: coefficient of performance ✔

Option A: J.K

Option B: J/K

Option C: N.m/sec

Option D: Kgm2/sec2.K

Correct Answer: J.K ✔

Option A: internal energy

Option B: heat supply

Option C: pressure

Option D: volume

Correct Answer: internal energy ✔

Option A: C.I engine

Option B: SI engine

Option C: IC engine

Option D: all the above

Correct Answer: all the above ✔

Option A: to smooth out the energy variation

Option B: to add more weight to engine to work it stable

Option C: to start engine

Option D: both A and B

Correct Answer: to smooth out the energy variation ✔

Option A: cyclic process

Option B: operated at certain temperature difference

Option C: both A and B

Option D: none of these

Correct Answer: both A and B ✔

Option A: constant

Option B: variable

Option C: zero

Option D: depends on situation

Correct Answer: zero ✔

Option A: Heat exchange process

Option B: Heating process

Option C: Isentropic process

Option D: All of the above

Correct Answer: Isentropic process ✔

Option A: isobaric

Option B: isochoric

Option C: adiabatic

Option D: isothermal

Correct Answer: adiabatic ✔

Option A: 3NaT/2R

Option B: 2NaT/3

Option C: 3RT/2Na

Option D: 3Na/2RT

Correct Answer: 3RT/2Na ✔

Option A: K = RNa

Option B: K = R/Na

Option C: K = Na/Ra

Option D: K = nRNa

Correct Answer: K = R/Na ✔

Option A: momentum

Option B: mass

Option C: velocity

Option D: kinetic energy

Correct Answer: kinetic energy ✔

Option A: 273°C at 6.11 Kpa

Option B: 273K at 61.6 Kpa

Option C: 273.16°C at 0.611 Kpa

Option D: 273.16K at 750 Kpa

Correct Answer: 273.16°C at 0.611 Kpa ✔

Option A: double

Option B: one half

Option C: four times

Option D: one fourth

Correct Answer: one half ✔

Option A: at any instant

Option B: averagely

Option C: during its operation

Option D: during one cycle

Correct Answer: during one cycle ✔

Option A: 460°C

Option B: 280°C

Option C: 360°C

Option D: 160°C

Correct Answer: 160°C ✔

Option A: 76cm 0°C

Option B: 760mm 273K

Option C: 1atm 273K

Option D: all of the above

Correct Answer: all of the above ✔

Option A: It is sum of all forms of energies associated with molecules of a system

Option B: It is a state function of a system

Option C: It is proportional to transnational K.E of the molecules

Option D: All are correct

Correct Answer: All are correct ✔

Option A: Different in different direction

Option B: Same in all direction

Option C: Same only along opposite directions

Option D: Same only along normal directions

Correct Answer: Same in all direction ✔

Option A: One degree of Fahrenheit scale

Option B: 1.8 degrees of Fahrenheit scale

Option C: 3.2 degrees of Fahrenheit scale

Option D: 2.12 degrees of Fahrenheit scale

Correct Answer: 1.8 degrees of Fahrenheit scale ✔

Option A: 40

Option B: 15.5

Option C: 542

Option D: 273

Correct Answer: 40 ✔

Option A: 37°C

Option B: 42°C

Option C: 55°C

Option D: 410°C

Correct Answer: 37°C ✔

Option A: 1.38×10-31JK-1

Option B: 3.18×10-31JK-1

Option C: 3.18×10-23JK-1

Option D: 1.38×10-23JK-1

Correct Answer: D. 1.38×10-23JK-1 ✔

Option A: Over a wide range of temperature its expansion is uniform

Option B: It does not stick to thermometer glass

Option C: It opaque to light

Option D: All of above

Correct Answer: All of above ✔

Option A: Mercury takes a long time to contract

Option B: The amount of mercury use is very small

Option C: The capillary tube has a small constriction near the bulb

Option D: The capillary tube is very narrow

Correct Answer: The capillary tube has a small constriction near the bulb ✔

Option A: rapid escape of air from a burst tyre

Option B: rapid expansion of air

Option C: conversion of water into ice in refrigerator

Option D: cloud formation in the atmosphere

Correct Answer: conversion of water into ice in refrigerator ✔

Option A: its pressure is constant

Option B: its pressure rises

Option C: its pressure falls

Option D: any of above

Correct Answer: its pressure rises ✔

Option A: isochoric processes

Option B: isobaric processes

Option C: isothermal processes

Option D: adiabatic processes

Correct Answer: isothermal processes ✔

Option A: volume

Option B: pressure

Option C: absolute temperature

Option D: time

Correct Answer: absolute temperature ✔

Option A: Boyles law

Option B: Charles law

Option C: Ideal gas law

Option D: Avagadros law

Correct Answer: Charles law ✔

Option A: 1 atmosphere

Option B: 1 Newton per square meter

Option C: 1 Pascal

Option D: data is insufficient

Correct Answer: 1 atmosphere ✔

Option A: Heat engine

Option B: Human body

Option C: Atmosphere

Option D: Laboratory

Correct Answer: Human body ✔

Option A: Frictional process

Option B: Chemical processes

Option C: Electrical processes

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Hyperbola

Option B: Parabola

Option C: A curve of any shape

Option D: A straight lime

Correct Answer: A straight lime ✔

Option A: The temperatures of water at 0? 100?C

Option B: The temperature of melting ice and boiling water at atmospheric pressure

Option C: The temperatures of ice cold and boiling water

Option D: The temperatures of frozen and boiling mercury

Correct Answer: The temperature of melting ice and boiling water at atmospheric pressure ✔

Option A: How much heat a body contains

Option B: Whether a body will feel hot or cold to touch

Option C: In which direction heat will flow between two systems

Option D: How much total absolute energy a body has

Correct Answer: In which direction heat will flow between two systems ✔

Option A: MLT

Option B: ML-1T-1

Option C: ML-1T-2

Option D: ML-2T-2

Correct Answer: ML-1T-2 ✔