## Isobaric Process - 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 Isobaric Process. 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. In which process the P-V indicator diagram is a straight line parallel to volume axis

•  Irreversible
•  Isothermal
•  Isobaric

Q2. When heat is given to a gas in an isobaric process, then

•  The work is done by the gas
•  Internal energy of the gas increases
•  Both (a) and (b)
•  None from (a) and (b)

Q3. The specific heat of hydrogen gas at constant pressure is Cp = 3.4 x10 3 cal/kg°C and at constant volume is Cv = 2.4 x 10 3 cal/kg°C. If one kilogram hydrogen gas is heated from 10°C to 20°C at constant pressure, the external work done on the gas to maintain it at constant pressure is

•  105 calories
•  104 calories
•  103 calories
•  5 x 103 calories

Q4. Two kg of water is converted into steam by boiling at atmospheric pressure. The volume changes from 2 x 10-3m3 to 3.34 m3. The work done by the system is about

•  -340 kJ
•  -170 kJ
•  170 kJ
•  340 kJ

Q5. A vessel contains an ideal monoatomic gas which expands at constant pressure, when heat Q is supplied to it. Then work done by the gas in the expansion is

•  Q
•  3Q/5
•  2Q/5
•  2Q/3

Q6. 540 calories of heat convert 1 cubic centimeter of water at 100°C into 1671 cubic centimeter of steam at 100°C at a pressure of one atmosphere. Then the work done against the atmospheric pressure is nearly

•  540 cal
•  40 cal
•  0 cal
•  500 cal

Q7. When 1 g of water changes from liquid to vapour phase at constant pressure of 1 atmosphere, the volume increases from 1cm3 to 1671 cc. The heat of vaporisation at this pressure is 540 cal/g. The increase in internal energy of water

•  2099 J
•  3000 J
•  992 J
•  2122 J

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