☰
GkSeries.com

Organic Chemistry Multiple Choice Questions and Answers – Rate of Reaction

Free download in PDF Organic Chemistry Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>

Go To Download Page
(1) The rate of the reaction is equal to the product of three factors listed below except ____________
[A] Collision frequency
[B] Energy factor
[C] Orientation factor
[D] pH factor
Answer: pH factor
(2) Temperature and pressure are the only factors which affect the reaction rate.
[A] True
[B] False
Answer: False
(3) The frequency of molecular collision increases if ____________
[A] The concentration of product increases
[B] The concentration of product decreases
[C] The concentration of reactant increases
[D] The concentration of reactant decreases
Answer: The concentration of reactant increases
(4) Identify the true statement regarding catalyst.
[A] Always decreases the rate of the reaction
[B] Always increases the activation energy of the reaction
[C] Actually participates in the reaction
[D] Changes the equilibrium concentration of the product
Answer: Actually participates in the reaction
(5) From the choices given below, identify the activation energy of a reaction whose rate constant increases by 100 when the temperature changes from 300K to 360K.
[A] 53
[B] 69
[C] 35
[D] 42
Answer: 69
(6) Identify the unit of “k” in moles/L for the rate law: k[A][B]pow2.
[A] L/mol/s
[B] L(pow2)/mol/s
[C] L(pow2)* s(pow2)/mol(pow2)
[D] s
Answer: s
(7) Which among the following catalyst increases the rate of the reaction?
[A] Calcium carbonate
[B] Calcium chloride
[C] Calcium hydroxide
[D] Calcium sulphate
Answer: Calcium carbonate
(8) Which is not a type of catalyst?
[A] Positive catalyst
[B] Negative catalyst
[C] Autocatalyst
[D] Homogeneous catalysis
Answer: Homogeneous catalysis
(9) What is the speed of a chemical reaction?
[A] Is independent of the contact surface
[B] Is constant no matter what the temperature is
[C] Varies inversely with the absolute temperature
[D] Is extremely rapid between the ions in aqueous solution
Answer: Is extremely rapid between the ions in aqueous solution
(10) The overall order for the reaction 2A+ B—> 2C with rate equation rate=k[A]^2[B] is?
[A] 0
[B] 1
[C] 2
[D] 3
Answer: 3
Click Here to Read more questions