1000+ Stoichiometry MCQ Questions and Answers Pdf - 3

Question: 11

During a phase change process like sublimation, vaporisation, melting etc., the specific ____ does not change.

(A) entropy

(B) enthalpy

(C) internal energy

(D) gibbs free energy

Question: 12

One micron is equal to ____ cm.

(A) 10^-2

(B) 10^-4

(C) 10^-6

(D) 10^-8

Question: 13

No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules

(A) are above the inversion temperature

(B) collide without loss of energy

(C) do work equal to loss in kinetic energy

(D) exert no attractive force on each other

Question: 14

1 torr is equal to _____ mm Hg column.

(A) 0.1

(B) 1

(C) 10

(D) 1000

Question: 15

Solutions which distil without change in composition are called

(A) azeotropic

(B) ideal

(C) saturated

(D) supersaturated