Class 10 Chemistry MCQs - Chapter 4

Chemical Equilibrium MCQ (Multiple Choice Questions) PDF - 6

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Chemical Equilibrium Questions & Answers PDF Download: MCQ Quiz 6

MCQ 26: The reactions in which reactants react to form products and simultaneously products reverse back into reactants are called

A) reversible reactions

B) irreversible reaction

C) spontaneous reactions

D) non spontaneous reactions

MCQ 27: The equilibrium constant can be used to

A) predict direction of chemical reaction

B) predict extent of chemical reaction

C) determine the equilibrium concentration of mixture

D) all of above

MCQ 28: The process by which ammonia is produced by the reaction of nitrogen with hydrogen at 200 atm pressure and in the presence of a catalyst is called

A) contact process

B) recovery of ammonia

C) calcination

D) Haber process

MCQ 29: If a change is imposed in concentration, temperature or pressure on a chemical system at equilibrium, the system responds in a way that the change is

A) not opposed

B) opposed

C) rapidly increased

D) slowly increased

MCQ 30: Which of the following statements about catalysts is not true?

A) they speed up a chemical reaction

B) they reduce the time taken to reach equilibrium

C) they have effect on the position of equilibrium once it is reached

D) they have no effect on the position of equilibrium one it is reached

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