Chemical Kinetics — NEET Chemistry practice

Question 1

Which factors affect the rate of a reaction? (1) ΔH of the reaction (2) Size of the vessel (3) Amount of the reactants taken (4) Physical state of the reactants

Accepted Answer

II, III and IV

Answer

I, II and III

Answer

I, III and IV

Answer

I, II and IV

Question 2

In the potential-energy diagram for R → P: 'a' is the gap from R up to the transition state, 'b' is the gap from the transition state down to P, and 'c' is the gap between R and P (P lies below R). Which corresponds to ΔH of the reaction?

Accepted Answer

c

Answer

a

Answer

b

Answer

a + b

Question 3

Four graphs of rate vs substrate concentration: A — straight line rising from origin; B — straight line falling; C — rises steeply then levels off (saturation); D — falls and levels off. Which correctly shows an enzyme-catalysed reaction?

Accepted Answer

C

Answer

D

Answer

B

Answer

A

Question 4

In the plot of log k (y-axis) vs 1/T (x-axis), the slope of the line is:

Accepted Answer

−Eₐ/(2.303 R)

Answer

Eₐ/2.303

Answer

2.303/Eₐ

Answer

−Eₐ/(2.303 RT)

Question 5

Read the Assertion and Reason carefully and choose the correct option. Assertion: The units of the rate of reaction are always mol L⁻¹ s⁻¹. Reason: The rate of reaction is defined as the change in concentration (in mol/L) over time.

Accepted Answer

Assertion is false, but Reason is true.

Answer

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.

Answer

Both Assertion and Reason are true, but Reason is NOT the correct explanation of Assertion.

Answer

Assertion is true, but Reason is false.

Chemical Kinetics: NEET practice questions

Choose how you want to practise

More Chemistry topics

Mole Concept & Atomic Structure

Periodic Table, Bonding & d/f-Block

Thermodynamics

Equilibrium & Solutions

Redox & Electrochemistry

Organic Chemistry

Chemistry in Everyday Life & Biomolecules