Physical Chemistry Quiz on Chemical Kinetics (5th sem)

The enzyme which can catalyst the conversion of glucose to ethanol is

• (a) Zymase

• (b) Invertase

• (c) Diastase

• (d) Maltase

An example of acid-base catalysis is

• (a) Inversion of cane sugar

• (b) keto- enol tautomerism

• (c) Decomposition of nitramide

• (d) All of the above

For any chemical reaction at equilibrium,the rate of the forward reaction is

• (a) Less than the rate of the reverse reaction

• (b) Greater than the rate of the reverse reaction

• (c) Equal to the rate of the reverse reaction

• (d) Unrelated to the rate of the reverse reaction

In a transition state theory, the reacting molecules before changing into product they form an intermediate called activated complex which has

• (a) Lower energy than reactants and product

• (b) Higher energy than reactants but less than product

• (c) Higher energy than both reactants and products

• (d) Less energy than both reactants and product

The overall reaction rate is

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The following three schemes for the reaction have been suggested.Which one of these fits into the rate equation?Use steady state approximation.

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If the product form in the reaction reacts to give back the reactants,such a complex is called

• (a) Parallel Reactions

• (b) Opposing or Reversible reactions

• (c) Consecutive Reactions

• (d) Chain Reactions