Refer to JEE Chemistry Chemical Kinetics MCQs Set A provided below available for download in Pdf. The MCQ Questions for Full Syllabus Chemistry with answers are aligned as per the latest syllabus and exam pattern suggested by JEE (Main), NCERT and KVS. Multiple Choice Questions for Chemical Kinetics and Nuclear Chemistry are an important part of exams for Full Syllabus Chemistry and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for JEE (Main) Full Syllabus Chemistry and also download more latest study material for all subjects
MCQ for Full Syllabus Chemistry Chemical Kinetics and Nuclear Chemistry
Full Syllabus Chemistry students should refer to the following multiple-choice questions with answers for Chemical Kinetics and Nuclear Chemistry in Full Syllabus.
Chemical Kinetics and Nuclear Chemistry MCQ Questions Full Syllabus Chemistry with Answers
Question: The term – dc/dt in a rate equation refers to
- a) the decrease in conc. of the reactant with time
- b) the velocity constant of reaction
- c) None of these
- d) the conc. of a reactant
Answer: the decrease in conc. of the reactant with time
Question:
- a) rate = k [A]2.[B]
- b) rate = k [A]2.[B]o
- c) rate = k [A].[B]
- d) rate = k [2A].[B]
Answer: rate = k [A]2.[B]
Question: Rate of which reaction increases with temperature
- a) of any type of reactions
- b) of exothemic reactions
- c) of endothemic reactions
- d) of none
Answer: of any type of reactions
Question: In a slow reaction, rate of reaction generally ____ with time:
- a) decreases
- b) increases
- c) sometimes increases and sometimes decreases
- d) remains constant
Answer: decreases
Question: The rate of a chemical reaction tells us about
- a) how slow or fast the reaction is taking place
- b) None of the above
- c) the products formed in the reaction
- d) the reactants taking part in reaction
Answer: how slow or fast the reaction is taking place
Question:
- a)
- b)
- c)
- d)
Answer:
Question:
- a)
- b)
- c)
- d)
Answer:
Question:
- a)
- b)
- c)
- d)
Answer:
Question: Which of the following reaction does not occur fastly ?
- a) Rusting of iron
- b) Burning of LPG for cooking
- c) Burning of gasoline
- d) None of these
Answer: Rusting of iron
Question: Chemical kinetics is a study to find out
- a) speed of a reaction
- b) All of the above
- c) extent to which a reaction will proceed
- d) the feasibility of a chemical reaction
Answer: speed of a reaction
Question: Rate of a reaction can be defined as
- a) the rate of decrease in concentration of any one of the reactants or the rate of increase in concentration of any one of the products
- b) the sum of rate of decrease in concentration of all the reactants or the rate of increase in concentration of all the products
- c) the rate of increase in concentration of any one of the products
- d) the rate of decrease in concentration of any one of the reactants
Answer: the rate of decrease in concentration of any one of the reactants or the rate of increase in concentration of any one of the products
Question: The rate of reaction
- a) may decrease or increase as the reaction proceeds
- b) remains the same as the reaction proceeds
- c) decreases as the reaction proceeds
- d) increases as the reaction proceeds
Answer: may decrease or increase as the reaction proceeds
Question: The unit of rate of reaction is
- a) mole/dm3 sec
- b) mole/dm3
- c) mole/pound
- d) mole/cm3
Answer: mole/dm3 sec
Question: In the rate equation, when the conc. of reactants is unity then rate is equal to
- a) specific rate constant
- b) average rate constant
- c) instantaneous rate constant
- d) None of above
Answer: specific rate constant
Question: The rate of reaction between two specific time intervals is called
- a) average rate
- b) ordinary rate
- c) instantaneous rate
- d) specific rate
Answer: average rate
Question: Instantaneous rate of a chemical reaction is
- a) rate of reaction at a given instant
- b) rate of reaction at the end
- c) rate of reaction in the beginning
- d) rate of reaction between two specific time intervals
Answer: rate of reaction at a given instant
Question: At the beginning the decrease in the conc. of reactants is
- a) rapid
- b) slow
- c) moderate
- d) None of above
Answer: rapid
Question: The average rate and instantaneous rate of a reaction are equal
- a) when two rate have time interval equal to zero
- b) in the middle
- c) at the end
- d) at the start
Answer: when two rate have time interval equal to zero
Question: The rate of reaction depends upon the
- a) conc. of reactants
- b) force
- c) volume
- d) pressure
Answer: conc. of reactants
Question:
- a) Both k and the reaction rate remain the same
- b) Both k and the reaction rate increase
- c) Both k and the reaction rate decrease
- d) Only k increases, the reaction rate remain the same
Answer: Both k and the reaction rate remain the same
More Questions..........................................
Question: Which one of the following statements for the order of a reaction is incorrect ?
- a) Order of reaction is always whole number
- b) Order of reaction is sum of power to the concentration terms of reactants to express the rate of reaction
- c) Order is not influenced by stoichiometric coefficient of the reactants
- d) Order can be determined only experimentally
Answer: Order of reaction is always whole number
Question:
- a) increasing the temperature
- b) increasing the concentration of the Cl2
- c) doing all of the above
- d) increasing the concentration of NO.
Answer: increasing the temperature
Question: Order of reaction can be
- a) integer, fraction, zero
- b) fraction
- c) 0
- d) whole number
Answer: integer, fraction, zero
Question: Units of rate constant of first and zero order reactions in terms of molarity M unit are respectively
- a) sec–1, Msec–1
- b) Msec–1, sec–1
- c) sec–1, M
- d) M, sec–1.
Answer: sec–1, Msec–1
Question: A reaction involving two different reactants can never be
- a) unimolecular reaction
- b) second order reaction
- c) bimolecular reaction
- d) first order reaction
Answer: unimolecular reaction
Question:
- a) the rate of reaction remains same at any concentration of A
- b) the rate of reaction is proportional to square of concentration of A
- c) the rate remains unchanged at any concentration of B and C
- d) the rate of reaction doubles if concentration of B is increased to double
Answer: the rate of reaction remains same at any concentration of A
Question:
- a) sec–1 mol–1 L
- b) sec–1
- c) sec–1 mol L–1
- d) None of these
Answer: sec–1 mol–1 L
Question: Order of reaction is decided by
- a) mechanism of reaction as well as relative concentration of reactants
- b) molecularity
- c) pressure
- d) temperature
Answer: mechanism of reaction as well as relative concentration of reactants
Question: Velocity constant k of a reaction is affected by
- a) change of temperature
- b) change in the concentration of the reactant
- c) change in the concentration of the product
- d) None of the above
Answer: change of temperature
Question:
- a) 0.8
- b) 1.4
- c) 0.04
- d) 0.07
Answer: 0.8
Question: A zero order reaction is one whose rate is independent of
- a) the concentration of the reactants
- b) the temperature of reaction
- c) the concentration of the product
- d) the material of the vessel in which reaction is carried out
Answer: the concentration of the reactants
Question: The rate law for a reaction between the substances A and B is given by Rate = k [A]n [B]m On doubling the concentration of A and halving the concentration of B, the ratio of the new rate to the earlier rate of the reaction will be as
- a) 2(n – m)
- b) (m + n)
- c) (n – m)
- d) None of these
Answer: 2(n – m)
Question:
- a) increase 2 times
- b) decrease 2 times
- c) increase 4 times
- d) remain the same
Answer: increase 2 times
Question: The order of a reaction, with respect to one of the reacting component Y, is zero. It implies that:
- a) the reaction rate is independent of the concentration of Y
- b) the rate of formation of the activated complex is zero
- c) the rate of reaction does not vary with temperature
- d) the reaction is going on at a constant rate
Answer: the reaction rate is independent of the concentration of Y
Question: If the rate of a gaseous reaction is independent of pressure, the order of reaction is
- a) 0
- b) 2
- c) 1
- d) 3
Answer: 0
Question: If the rate of the reaction is equal to the rate constant, the order of the reaction is
- a) 0
- b) 2
- c) 3
- d) 1
Answer: 0
Question: In a reaction, when the concentration of reactant is increased two times, the increase in rate of reaction was four times. Order of reaction is
- a) 2
- b) zero
- c) 1
- d) 3
Answer: 2
Question:
- a) 6
- b) 7
- c) 3
- d) 5
Answer: 6
Question: The unit of rate constant for a zero order reaction is
- a) mol L–1 s–1
- b) L mol–1 s–1
- c) s–1
- d) None of these
Answer: mol L–1 s–1
Question:
- a)
- b)
- c)
- d) None of these
Answer:
Question:
- a) (c + d)
- b) (x + y)
- c) (m + n)
- d) x/y
Answer: (c + d)
Question:
- a) 1, –1, 3/2
- b) –1, 1, 1/2
- c) –1, 1, 3/2
- d) 1, 3/2, –1
Answer: 1, –1, 3/2
Question:
- a) Rate = k[B]3
- b) Rate = k [B]4
- c) Rate = k [A] [B]3
- d) None of these
Answer: Rate = k[B]3
Question: The order of a reaction with rate equal to k[A]3/2 [B]–1/2 is :
- a) 1
- b) 2
- c)
- d)
Answer: 1
Question:
- a) 0
- b) 2
- c) 1
- d) 3
Answer: 0
Question: The rate constant of a reaction is 3.00 × 103 L mol–1 sec–1. The order of this reaction will be
- a) 2
- b) 0
- c) 1
- d) 3
Answer: 2
Question:
- a) rate = k[A] [B]2
- b) rate = k[A] [B]
- c) rate = k [A]2 [B]
- d) rate = k[A]2[B]2
Answer: rate = k[A] [B]2
Question:
- a)
- b)
- c)
- d) 1, 1
Answer:
Question:
- a) r = k [O3]2[O2]–1
- b) r = k[O3]2
- c) r = [O3][O2]2
- d) None of these
Answer: r = k [O3]2[O2]–1
Question:
- a) Rate = k[NO]2[H2]2
- b) Rate = k[H2O2][H2]
- c) Rate = k[NO]2[H2]
- d) None of these
Answer: Rate = k[NO]2[H2]2
Question: Which of the following is not a first order reaction ?
- a) Decomposition of HI on gold surface
- b) Natural radioactive decay of unstable nuclei
- c) Hydrogenation of ethene
- d) None of these
Answer: Decomposition of HI on gold surface
Question: The plot that represents the zero order reaction is
- a)
- b)
- c)
- d)
Answer:
Question: The plot of concentration of the reactant vs time for a reaction is a straight line with a negative slope. The reaction follows a rate equation
- a) zero order
- b) second order
- c) first order
- d) third order
Answer: zero order
Question: The half-life of a reaction is inversely proportional to the square of the initial concentration of the reactant. Then the order of the reaction is
- a) 3
- b) 1
- c) 0
- d) 2
Answer: 3
Question:
- a)
- b)
- c)
- d)
Answer:
Question: Half life of a first order reaction is 4s and the initial concentration of the reactant is 0.12 M. The concentration of the reactant left after 16 s is
- a) 0.0075 M
- b) 0.03 M
- c) 0.06 M
- d) 0.015 M
Answer: 0.0075 M
Question:
- a) 1 hour
- b) 0.25 hour
- c) 2 hours
- d) 0.5 hour
Answer: 1 hour
Question: The rate of a first order reaction is 1.5 × 10–2 mol L–1 min–1 at 0.5 M concentration of the reactant. The half life of the reaction is
- a) 23.1 min
- b) 7.53 min
- c) 0.383 min
- d) 8.73 min
Answer: 23.1 min
Question: The rate constant for a first order reaction whose half-life, is 480 seconds is
- a) 1.44 × 10 –3 sec–1
- b) 2.88 × 10–3 sec–1
- c) 2.72 × 10–3 sec–1
- d) None of these
Answer: 1.44 × 10 –3 sec–1
Question:
- a) 300 s
- b) 100 s
- c) 200 s
- d) 400 s
Answer: 300 s
Question: A reaction proceeds by first order, 75% of this reaction was completed in 32 min. The time required for 50% completion is
- a) 16 min
- b) 24 min
- c) 8 min
- d) 20 min
Answer: 16 min
Question: Point out the wrong statement: For a first order reaction
- a) the unit of k is mole–1 min–1
- b) time for half-change × rate constant = 0.693
- c) change in the concentration unit does not change the rate constant (k)
- d) time for half-change (t1/2) is independent of initial concentration
Answer: the unit of k is mole–1 min–1
Question:
- a) 0.29/k
- b) 0.75/k
- c) 0.69/k
- d) 0.10/k
Answer: 0.29/k
Question:
- a)
- b)
- c)
- d)
Answer:
Question:
- a) L mol–1 s–1
- b) mol L–1 s–1
- c) s–1
- d) no unit
Answer: L mol–1 s–1
Question:
- a)
- b) the reaction is unimolecular
- c) the reaction is bimolecular
- d) None of these
Answer:
Question:
- a)
- b)
- c)
- d) None of these
Answer:
Question:
- a)
- b)
- c)
- d) None of these
Answer:
Question:
- a) two
- b) zero
- c) one
- d) 0.5
Answer: two
Question: The value of rate constant of a pseudo first order reaction _________.
- a) depends on the concentration of reactants present in small amount
- b) depends on the concentration of reactants present in excess.
- c) is independent on the concentration of reactants
- d) depends only on temperature
Answer: depends on the concentration of reactants present in small amount
Question: In the Haber process for the manufacture of ammonia the following catalyst is used
- a) Iron with molybdenum as promoter
- b) Platinized asbestos
- c) Copper oxide
- d) Alumina
Answer: Iron with molybdenum as promoter
Question: What is the activation energy for a reaction if its rate doubles when the temperature is raised from 20°C to 35°C? (R = 8.314 J mol–1 K–1)
- a) 34.7 kJ mol–1
- b) 342 kJ mol–1
- c) 269 kJ mol–1
- d) None of these
Answer: 34.7 kJ mol–1
Question: A reaction having equal energies of activation for forward and reverse reaction has
- a)
- b)
- c)
- d)
Answer:
Question:
- a) none of the above
- b)
- c)
- d)
Answer: none of the above
Question:
- a) 166
- b) 332
- c) 83
- d) 249
Answer: 166
Question: The rate of reaction is doubled for every 10°C rise in temperature. The increase in reaction rate as a result of temperature rise from 10°C to 100°C is
- a) 512
- b) 614
- c) 112
- d) 400
Answer: 512
Question: Plots showing the variation of the rate constant (k) with temperature (T) are given below. The plot that follows Arrhenius equation is
- a)
- b)
- c)
- d)
Answer:
Question: If the activation energy for the forward reaction is 150 kJ mol–1 and that of the reverse reaction is 260 kJ mol–1, what is the enthalpy change for the reaction ?
- a) –110 kJ mol–1
- b) – 410 kJ mol–1
- c) 410 kJ mol–1
- d) 110 kJ mol–1
Answer: –110 kJ mol–1
Question: Activation energy of a chemical reaction can be determined by
- a) evaluating rate constants at two different temperatures
- b) changing concentration of reactants
- c) evaluating velocities of reaction at two different temperatures
- d) evaluating rate constant at standard temperature
Answer: evaluating rate constants at two different temperatures
Question:
- a) Ea is energy of activation
- b) R is Rydberg’s constant
- c) k is equilibrium constant
- d) A is adsorption factor
Answer: Ea is energy of activation
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MCQs for Chemical Kinetics and Nuclear Chemistry Chemistry Full Syllabus
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