1000+ Thermodynamics Multiple Choice Questions and Answers Pdf - 1

Question: 1

An isolated system

(A) is one in which mass within the system is not necessarily constant

(B) cannot transfer either energy or mass to or from the surroundings

(C) is a region of constant mass and only energy is allowed to cross the boundaries

(D) is a specified region where transfers of energy and/or mass takes place

Question: 2

An isentropic process is always

(A) reversible and adiabatic

(B) frictionless and irreversible

(C) reversible and isothermal

(D) irreversible and adiabatic

Question: 3

Triple point

(A) is the range of temperature within which three constituents simultaneously change phase

(B) is that point where three phases solid, liquid and gas exist together

(C) occurs in a mixture of two or more gases

(D) occurs in sublimation

Question: 4

The solubility of a gas in a liquid at small concentration is represented by

(A) Claperyon equation

(B) Henry's law

(C) Roult's law

(D) Vander waal's equation

Question: 5

A carburettor is used to supply

(A) petrol + air

(B) petrol + lubricating oil

(C) petrol + air + lubricating oil

(D) diesel + air + lubricating oil