Which of the following will favour the reverse reaction in a chem

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

171.

For the reaction,

H2 (g) + I2 (g)  2HI (g),

the equilibrium constants expressed in terms of concentrations Kc and in terms of partial pressures Kp, are related as:

  • Kp = Kc (RT)2

  • Kp = Kc(RT)-2

  • Kp = Kc

  • Kc = Kp(RT)


172.

Which of the following pairs are correctly matched?
1. Haber process Manufacture of ammonia
2. Leblanc process Manufacture of sulphuric acid
3. Birkeland-Eyde process Manufacture of nitric acid
4. Solvay process Manufacture of sodium carbonate

Select the correct answer using the codes given below-

  • 1, 3 and 4

  • 2, 3 and 4

  • 1, 2, 3 and 4

  • 1, 2 and 4


Advertisement

173.

Which of the following will favour the reverse reaction in a chemical equilibrium ?

  • Increasing the concentration of the reactants

  • Removal of at least one of the products at regular intervals

  • Increasing the concentration of one or more of the products

  • Increasing the pressure


C.

Increasing the concentration of one or more of the products

If the concentration of a product is increased then by Le-Chatelier principle, equilibrium shifts in the backward direction.


Advertisement
174.

Kp and Kc are related as :

  • Kp = Kc(RT)Δn

  • Kp + K= (RT)Δn

  • Kc= Kp

  • Kp .Kc= (RT)Δn


Advertisement
175.

100 mL of 0.01 M solution of NaOH is diluted to 1 dm3. What is the pH of the diluted solution?

  • 12

  • 11

  • 2

  • 3


176.

Relation between hydrolysis constant and dissociation constant are given. Which is the correct formula for MgCl2 ?

  • KhKwKa

  • KhKwKb

  • KhKwKa × Kb

  • KwKhKb


177.

Calculate pOH of 0.001 M NH4OH when it is 1% dissociated in the solution.

  • 5

  • 2.96

  • 9.04

  • 11.04


178.

The values of dissociation constant of bases are given below. Which is the weakest base?

  • 1.8 × 10-5

  • 4.8 × 10-10

  • 7.2 × 10-11

  • 7.07 × 10-7


Advertisement
179.

The pH of millimolar HCl is

  • 1

  • 3

  • 2

  • 4


180.

0.5 M ammonium benzoate is hydrolysed to 0.25 percent, hence, its hydrolysis constant is

  • 2.5 x 10-5

  • 1.5 x 10-4

  • 3.125 x 10-6

  • 6.25 x 10-6


Advertisement