Question 1

The rate of reaction determined at any given time is called:

Accepted Answer

Instantaneous rate

Answer

Average rate

Answer

Overall rate

Answer

Spontaneous rate

Question 2

The rate of reaction _________ as the reaction proceeds:

Accepted Answer

decreases

Answer

increases

Answer

may decrease or increase

Answer

remains the same

Question 3

Unit of Rate Constant is the same as that of reaction in:

Accepted Answer

zero order reaction

Answer

3rd order reaction

Answer

2nd order reaction

Answer

1st order reaction

Question 4

In zero order reaction, rate is independent of:

Accepted Answer

concentration of reactants

Answer

none of these

Answer

concentration of products

Answer

temperature of reaction

Question 5

All radioactive disintegration nuclear reactions are of:

Accepted Answer

first order

Answer

second order

Answer

third order

Answer

zero

Question 6

With increase in 10°C temperature, the rate of reaction doubles. This increase in rate of reaction is due to:

Accepted Answer

increase in the number of effective collisions

Answer

increase in activation energy of reactants

Answer

decrease in the number of collisions between reactant molecules

Answer

decrease in activation energy of reaction

Question 7

If the rate equation of a reaction 2A + B  → products is, rate = K[A]$^2$[B], and A is present in large excess, then the order of reaction is:

Accepted Answer

1

Answer

none of these

Answer

2

Answer

3

Question 8

Glucose can be converted into ethanol by an enzyme:

Accepted Answer

zymase

Answer

lipase

Answer

urease

Answer

sucrose

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