# Thermodynamics (Enthalpy Change, ∆rH of a Reaction) MCQs with FREE PDF

We have the best collection of Enthalpy Change MCQs and answer with FREE PDF. These Enthalpy Change MCQs will help you to prepare for any competitive exams like: NEET, AIIMS, JEE Mains, JEE Advance, IIT JEE, JIPMER and other Exams at all levels – you just have to practice regularly.

## Enthalpy Change MCQs

#### 1. Calculate the internal energy change when 2 moles of water at 0 degrees converts into ice at 0-degree centigrade?

a) 12 KJ per mole

b) 6 KJ per mole

c) 1 KJ per mole

d) 102 KJ per mole

a) 1.50 KJ

b) 0.506 KJ

c) 1.06 KJ

d) 1.506 KJ

a) true

b) false

#### 4. Consider the equation 2 H2 + O2 → 2 H2O, what does the 2 in the coefficient of H2O molecule represent?

a) number of particles

b) the number of molecules

c) number of moles

d) number of atoms

a) KJ Mol

b) KJ per Mol

c) Mol per KJ

d) 1/KJ Mol

#### 6. Which of the following is not an application of Hess’s law?

a) determination of heat of formation

b) determination of heat of transition

c) determination of Gibb’s energy

d) determination of heat of hydration

a) true

b) false

a) 1 ATM

b) 1 bar

c) 1 Pascal

d) 760 mm HG

a) true

b) false

a) 41.43 KJ/mol

b) 49.53 KJ/mol

c) 41.3 KJ/mol

d) 41.53 KJ/mol