Thermodynamics MCQ Question with Answer

Thermodynamics MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 1

In a thermal decomposition reaction, sign of $∆ H$ may be...

positive

negative

No sign

positive or negative.

Question No : 2
The total heat content of a system is known as....

Enthalpy

Thermal Energy

Entropy

Activation Energy

Question No : 3
In reaction $C_{(s)} + O_{2} (g) \to C O_{2} (g) ∆ H = - 94.3 K c a l m o l^{- 1}$

HP < HR

HP > HR

2HP = 3HR

HP = HR

Question No : 4
The heat of neutralisation of a strong acid and a strong base is equal to...................... $K . C a l g m e q^{- 1}$

27.3

31.7

15.7

13.7

Question No : 5
Internal energy of the elements is assigned a value of................................cal per mole at standard states.

Question No : 6
The apparatus used for measuring the heat changes is known as ...

Thermometer

Ammeter

Voltameter

Calorimeter

Question No : 7
The highest temperature at which vapour pressure of a liquid can be measured is..

the boiling point of the liquid

critical solution temperature

ionisation temperature

inversion temperature

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