NMDCAT Preparation Chemistry Chapter # 4

NMDCAT Practice Test Chapter no 4

Attempt your practice test and evaluate the preparation level. This Chapter includes Chemical Equilibrium & Reaction Kinetics

Dear Students 25 minutes are given to solve 25 MCQs.

Your result will be displayed at the end of the quiz.

Created by Umair Ali khan
NMDCAT Chemistry MCQs Practice test

NMDCAT Chemistry Chapter 4 Practice Test

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1) Rate of an exothermic reaction is increased by increasing all except

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2) The solubility product of a salt AB is 0.25 mol²/dm6. What will be its solubility (mol/dm³)

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3) Following is an exothermic reaction
A+ B ⇌ C+ D. Which is the correct statement

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4) The pKa value of CH3COOH is 4.74. The pH of an equimolar solution of acetic acid and sodium acetate is:

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5) If the value of the Kc is large then it shows that the products are:

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6) For the gas phase reaction
2X+Y ⇋ 2Z  ∆H= -ive kJ/mol. The yield of Z at equilibrium could be increased by

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7) The pH of buffer in which concentrations of salt and base are 0.1M and 0.01M respectively
(pKb = 4.0)

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8) A buffer is prepared by mixing the solutions of equimolar acetic acid and sodium acetate. The pH should be equal to

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9) All are correct about zero order except

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10) 1.0g mole of ethyl alcohol and 1.0g mole of acetic acid are mixed. At equilibrium 0.666g mole of the ester is present. The value of the equilibrium constant is

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11) 2HI(g) ⇌ H2(g) + I2(g)
For the above reaction if Kc is 0.25, then Kp for
this reaction will be

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12) The rate of a reaction involving ions can be studied by the method

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13) In N2 +3H2 ⇌ 2NH3 the yield of the product will be minimum if

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14) One of the following is not a physical method for determination of the rate of reaction

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15) The difference in energy between reactants and the transition state is called

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16) Which of the followings is a pseudo-first-order reaction?

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17) The rate of first-order reaction depends on

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18) The rate of chemical reaction roughly doubles for every 10°C rise in temperature. If the temperature is raised by 20°C, the rate may increase

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19) If the equilibrium constant KC value for a certain reaction is very small, then:

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20) The half-life of the reaction becomes half when initial concentrations of reactants are doubled. The order of the reaction will be

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21) Catalyst can change

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22) In a reaction 2X + Y → M + N
If the concentration is of Y kept constant and that of X is tripled. The rate of reaction will

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23) The rate expression of a reaction is, Rate = k[A][B]2
What happens to the rate of reaction if concentrations of A and B are doubled?

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24) Which one of the following factors does not affect the equilibrium position?

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25) For the first-order reaction, the half-life is related to the expression k t1/2 = 0.693. Half-life is the 1
A. Time is taken for the conc. of the product to increase to half of its original value.

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