NEET Chemistry is the very imporatant paper in the Medical Entrance EXAM. So these NEET Chemistry MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Chemistry objective questions on air pollution. NEET Chemistry Chemical Kinetics Multiple Choice Questions
MCQs on Chemical Kinetics :
1. The rate of a chemical reaction tells us about
(A) the reactants taking part in the reaction
(B) the products formed in the reaction
(C) how slow or fast the reaction is taking place
(D) none of the above
Answer
Answer: (c)
2. In the rate equation, when the concentration of reactants is unity then the rate is equal to
(A) specific rate constant
(B) average rate constant
(C) instantaneous rate constant
(D) None of the above
Answer
Answer: (a)
3. The average rate and instantaneous rate of a reaction are equal
(A) at the start
(B) at the end
(C) in the middle
(D) when two rates have a time interval equal to zero
Answer
Answer: (d)
4. Which of the following observations is incorrect about the order of a reaction?
(A) Order of a reaction is always a whole number
(B) The stoichiometric coefficient of the reactants doesn’t affect the order
(C) Order of reaction is the sum of power to express the rate of reaction to the concentration terms of the reactants.
(D) Order can only be assessed experimentally
Answer
Answer: (a)
5. The rate constant of zero order reactions has the unit
(A) s-1
(B) mol L-1 s-1
(C) L2 mol-2 s-1
(D) L mol-1 s-1
Answer
Answer: (a)
6. In the reaction 2A + B → A2B, if the concentration of A is doubled and that of B is halved, then the rate of the reaction will
(A) increase 2 times
(B) increase 4 times
(C) decrease 2 times
(D) remain the same
Answer
Answer: (a)
7. The reactant Vs time concentration diagram for a reaction is a straight line with a negative pendulum. The reaction follows an equation for the intensity.
(A) zero order
(B) first order
(C) second order
(D) third order
Answer
Answer: (a)
8. A substance ‘A’ decomposes by a first order reaction starting initially with [A] = 2.00M and after 200min, [A] becomes 0.15M. For this reaction t1/2 is
(A) 53.72 min
(B) 50.49 min
(C) 48.45 min
(D) 46.45 min
Answer
Answer: (a)
9. In the Haber process for the manufacture of ammonia the following catalyst is used
(A) Platinized asbestos
(B) Iron with molybdenum as a promoter
(C) Copper oxide
(D) Alumina
Answer
Answer: (b)
10. In a reversible reaction, the energy of activation of the forward reaction is 50 kcal. The energy of activation for the reverse reaction will be
(A) < 50 kcal
(B) either greater than or less than 50 kcal
(C) = 50 kcal
(D) > 50 kcal
Answer
Answer: (b)