Practice Pakistan's most useful MCQs for competitive exams

Rate of reactions of most organic compounds are____________________?

• (A)  very slow
• (B)  very fast
• (C)  slow
• (D)  no regular character present

Answer

Submitted By :Ali Uppal

The organic compounds having very high molecular weight are called _________________?

• (A)  carboxylic acids
• (B)  ketones
• (C)  aldehydes
• (D)  polymers

Answer

Submitted By :Ali Uppal

The property of carbon chain formation is called _________________?

• (A)  catenation
• (B)  hybridization
• (C)  polymerization
• (D)  solvation

Answer

Submitted By :Ali Uppal

Reaction in which heat evolves is called ____________________?

• (A)  endothermic
• (B)  spontaneous
• (C)  non-spontaneous
• (D)  exothermic

Answer

Submitted By :Ali Uppal

Anything which depends upon initial and final state of a system is_______________?

• (A)  environment
• (B)  surrounding
• (C)  state function
• (D)  enthalpy

Answer

Submitted By :Ali Uppal

The environment in which a system is studied is __________________?

• (A)  State function
• (B)  phase
• (C)  surrounding
• (D)  state

Answer

Submitted By :Ali Uppal

A reaction has values of ?H and ?S which are both positive. The reaction __________________?

• (A)  Is spontaneous
• (B)  Spontaneity is temperature dependent
• (C)  Has an increasing free energy
• (D)  Is non-spontaneous

Answer

Submitted By :Ali Uppal

If internal energy of the system is increased ____________________?

• (A)  Change in state of the system is increased
• (B)  Temperature of the ystem may rise
• (C)  Chemical reaction may take place
• (D)  All

Answer

Submitted By :Ali Uppal

Which one is not state function ________________?

• (A)  Internal energy
• (B)  Enthalpy
• (C)  Gibbs free energy
• (D)  Work

Answer

Submitted By :Ali Uppal

Which is not heterocyclic compound _______________?

• (A)  Furan
• (B)  Thiophene
• (C)  Aniline
• (D)  Pyridine

Answer

Submitted By :Ali Uppal