Class 10 Chemistry MCQs – Practice Test 6 (Chapter 4)

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Chemical Equilibrium MCQ – Practice Test 6 PDF Download

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

reversible reactions
irreversible reaction
spontaneous reactions
non spontaneous reactions

MCQ 27: The equilibrium constant can be used to

predict direction of chemical reaction
predict extent of chemical reaction
determine the equilibrium concentration of mixture
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

contact process
recovery of ammonia
calcination
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

not opposed
opposed
rapidly increased
slowly increased

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

they speed up a chemical reaction
they reduce the time taken to reach equilibrium
they have effect on the position of equilibrium once it is reached
they have no effect on the position of equilibrium one it is reached

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