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MCQs 1: Which of the following is not the intensive property___________________?

pressure temperature density heat specific volume
Answer Explanation

MCQs 2: Which of the following is the property of a system___________________?

pressure and temperature internal energy volume and density enthalpy and entropy all of the above
Answer Explanation

MCQs 3: According to Avogadro’s law, for a given pressure and temperature, each molecule of a gas_________________?

occupies volume proportional to its molecular weight occupies volume proportional to its specific weight occupies volume inversely proportional to its molecular weight occupies volume inversely proportional to its specific weight occupies same volume
Answer Explanation

MCQs 4: Properties of substances like pressure, temperature and density, in thermodynamic coordinates are__________________?

path functions point functions cyclic functions real functions thermodynamic functions
Answer Explanation

MCQs 5: If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to__________________?

+ v – ve zero pressure x volume any where between zero and infinity
Answer Explanation

MCQs 6: The statement that molecular weights of all gases occupy the same volume is known as________________?

Avogadro’s hypothesis Dalton’s law Gas law Law of thermodynamics Joule’s law
Answer Explanation

MCQs 7: Extensive property of a system is one whose value______________________?

depends on the mass of the system like volume does not depend on the mass of the system, like temperature, pressure, etc is not dependent on the path followed but on the state is dependent on the path followed and not on the state is always constant
Answer Explanation

MCQs 8: Gases have___________________?

only one value of specific heat two values of specific heat three values of specific heat no value of specific heat under some conditions one value and sometimes two values of specific heat
Answer Explanation

MCQs 9: An open system is one in which____________________?

mass does not cross boundaries of the system, though energy may do so neither mass nor energy crosses the boundaries of the system both energy and mass cross the boundaries of the system mass crosses the boundary but not the energy thermodynamic reactions do not occur
Answer Explanation

MCQs 10: Which law states that the specific heat of a gas remains constant at all temperatures and pressures______________________?

Charles’ Law Joule’s Law Regnault’s Law Boyle’s Law there is no such law
Answer Explanation

MCQs 11: Which law states that the internal energy of a gas is a function of temperature__________________?

Charles’ law Joule’s law Regnault’s law Boyle’s law there is no such law
Answer Explanation

MCQs 12: The ratio of two specific heats of air is equal to____________________?

0.17 0.24 0.1 1.41 2.71
Answer Explanation

MCQs 13: Characteristic gas constant of a gas is equal to______________________?

C/Cv Cv/Cp Cp – Cv Cp + Cv Cp x Cv
Answer Explanation

MCQs 14: Intensive property of a system is one whose value____________________?

depends on the mass of the system, like volume does not depend on the mass of the system, like temperature, pressure, etc is not dependent on the path followed but on the state is dependent on the path followed and not on the state remains constant
Answer Explanation

MCQs 15: Superheated vapour behaves___________________?

exactly as gas as steam as ordinary vapour approximately as a gas as average of gas and vapour
Answer Explanation

MCQs 16: The unit of power in S.I. units is_______________________?

newton pascal erg watt joule
Answer Explanation

MCQs 17: The pressure’of a gas in terms of its mean kinetic energy per unit volume E is equal to________________?

E/3 E/2 3E/4 2E/3 5E/4
Answer Explanation

MCQs 18: No liquid can exist as liquid at____________________?

– 273 °K vacuum zero pressure centre of earth in space
Answer Explanation

MCQs 19: According to kinetic theory of gases, the absolute zero temperature is attained when___________________?

volume of the gas is zero pressure of the gas is zero kinetic energy of the molecules is zero specific heat of gas is zero mass is zero
Answer Explanation

MCQs 20: A closed system is one in which_________________________?

mass does not cross boundaries of the system, though energy may do so mass crosses the boundary but not the energy neither mass nor energy crosses the boundaries of the system both energy and mass cross the boundaries of the system thermodynamic reactions take place
Answer Explanation

MCQs 21: Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits ?

02, N2, steam, C02 Oz, N2, water vapour S02, NH3, C02, moisture 02, N2, H2, air steam vapours, H2, C02
Answer Explanation

MCQs 22: General gas equation is____________________?

PV=nRT PV=mRT PV = C PV=KiRT Cp-Cv = Wj
Answer Explanation

MCQs 23: According to Gay-Lussac law for a perfect gas, the absolute pressure of given mass varies directly as____________________?

temperature absolute absolute temperature, if volume is kept constant volume, if temperature is kept constant remains constant,if volume and temperature are kept constant
Answer Explanation

MCQs 24: The unit of length in S.I. units is________________?

meter centimeter kilometer millimeter
Answer Explanation

MCQs 25: The unit of temperature in S.I. units is _________________?

Centigrade Celsius Fahrenheit Kelvin Rankine
Answer Explanation

MCQs 26: Which of the following laws is applicable for the behavior of a perfect gas__________________?

Boyle’s law Charles’law Gay-Lussac law all of the above Joule’s law
Answer Explanation

MCQs 27: The unit of time in S.I. units is__________________?

second minute hour day year
Answer Explanation

MCQs 28: Which of the following variables controls the physical properties of a perfect gas_________________?

pressure temperature volume all of the above atomic mass
Answer Explanation

MCQs 29: Atmospheric pressure is equal to____________?

1.013 bar 760mm of Hg 101.3KN/m2 All of these
Answer Explanation

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