Home

What is the correct answer?

4

For the reversible reaction
N2g+3H2g=2NH3gH is-93.7 Kj.
The equilibrium will shift in the forward direction if conc. of

A. NH3 is increased

B. N2 is decreased

C. N2 is increased

D. temperature is kept variable

Correct Answer :

C. N2 is increased


Related Questions

What is the correct answer?

4

pH of a solution is 10. Hydroxide ion concentration in the solution is

A. 10-10 gm eq.

B. 10-4 mole liter-1

C. 10-4 gm liter-1

D. 10-3 gm eq.

What is the correct answer?

4

An aqueous solution of sodium acetate is

A. amphoteric

B. halogenic

C. alkaline

D. acidic

What is the correct answer?

4

Which of the following is not hydrolysed in water ?

A. HCOONa

B. KCN

C. K2CO3

D. KC1

What is the correct answer?

4

Ostwald dilution law is applicable for :

A. weak electrolytes

B. strong electorate

C. basic

D. acids

What is the correct answer?

4

pH of 0.001 M NaOH aqueous solution is

A. 2

B. 5

C. 11

D. 9

What is the correct answer?

4

Acetic acid is weak acid because it is

A. organic acid

B. immiscible with water

C. slightly ionised

D. viscous

What is the correct answer?

4

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

A. Increasing the concentration of one or more of the products

B. Decreasing the concentration of one of the products

C. Removal of at least one of the products at regular intervals

D. None of the above

What is the correct answer?

4

2 gm of NaOH is dissolved in one litre water. pH of the solution will be

A. 12.7

B. 11.7

C. 1.3

D. 17.7

What is the correct answer?

4

On dissolving sodium carbonate in water pH of the solution

A. decreases

B. increases

C. remains unchanged

D. may increase or decrease

What is the correct answer?

4

Ionisation constant of formic acid is 1.8 x 1.8×10-4 at 298 K. In 0.1 NHCOOH the percentage ionisation of HCOOH acid is

A. 0.18

B. 42.4

C. 4.24

D. 2.89

What is the correct answer?

4

On dissolving sodium chloride in water pH of the solution

A. decreases

B. increases

C. remains unchanged

D. increase or decreases

What is the correct answer?

4

Solubility of calcium carbonate is 0.0305 gm/litre.Kspfor CaCO3 is

A. 0.000305

B. 193 x 10-8

C. 9.3 x10-8

D. 93.05 x1-5

What is the correct answer?

4

A solution is said to be saturated w.r.t the electrolyte it contains if

A. ionic product < Ksp

B. ionic product > Ksp

C. [ionic product]2 = Ksp

D. ionic product = Ksp

What is the correct answer?

4

For the reversible reaction
N2g+3H2g=2NH3gH is-93.7 Kj.
The equilibrium will shift in the forward direction if conc. of

A. NH3 is increased

B. N2 is decreased

C. N2 is increased

D. temperature is kept variable

What is the correct answer?

4

pH of 0.1 M monobasic acid is 4 then molar concentration of H+ per litre will be

A. 10-8

B. 20×105

C. 10-3

D. 10-4

What is the correct answer?

4

An aqueous solution CaF2 contains 2 x 10-4mole lit-1 of CaF2. Ksp for CaF2 is

A.  16 x 10-8

B. 3.2 x 1010-11

C. 3.2 x 10-6

D. 0.156 x 10-2

What is the correct answer?

4

Precipitation takes place when

A. ionic product < Ksp

B. ionic product > Ksp

C. ionic product2=Ksp 

D. ionic product = Ksp

What is the correct answer?

4

BaSO4(Mol. wt 233) has solubility 0.009 gmlit-1 at 298 K. Its solubility product is

A.  1.521 x 10-5

B. 152.1 x 10-1910"19

C. 1.9 x 10-5

D. 15.21 x 10-9

What is the correct answer?

4

Sum of pH and pOH of an acidic solution at 25°C is

A. 0

B. 14

C. depends on pH of base

D. depends on pH of acid

What is the correct answer?

4

Degree of ionisation depends on

A. temperature

B. nature of solvent

C. neither (a) nor (b)

D. both (a) and (b)

What is the correct answer?

4

Which of the following is not hydrolysed in water ?

A. HCOONa

B. KCN

C. K2CO3

D. KC1

What is the correct answer?

4

0.1 M acetic acid ionise to an extent of 1.34%. Ionisation constant of acetic acid is

A. 0.00134

B. 1.182

C. 1.82 x 10-5

D. 2.8 x 10-61CF6

What is the correct answer?

4

 Molar concentration of Ag+ in an aqueous solution of Ag2CrO4 at 298K is 1.5 x 10-4 Ksp, for Ag2CrO4 is

A. 1.125 x 10-8

B. 2.5 x 10-4

C. 2.25 x10-8

D. 1.6875 x 10-12

What is the correct answer?

4

In III gp of salt analysis for cations NH4CL and NH4OH are added as group reagents. Which of the following can be used instead of NH4CL ?

A. NH4NO3

B. NaCL

C. NH42SO4

D. NH42C2O4

What is the correct answer?

4

Which of the following is not a Lewis acid?

A. ZnCL2

B. BF3

C. H2O

D. Ag+

What is the correct answer?

4

Strength of an acid depends on

A. hydrolysis

B. concentration of OH- ions

C. concentration ofH+ ions

D. no. of moles of base used for neutralisation

What is the correct answer?

4

According to Bronsted Lowry an acid is

A. that gives cation in solution

B. one that gives H+ ions in solution

C. electron acceptor

D. proton donor

What is the correct answer?

4

On dissolving copper sulphate in water pH of the solution

A. decreases

B. increases

C. remains unchanged

D. may increase or decrease

What is the correct answer?

4

Conjugate acid differs from its conjugate base by

A. proton

B. meson

C. electron pair

D. positron

What is the correct answer?

4

CH3COOH+H2H3O++CH3COO-
In the above reaction acid is

A. H3O+

B. H2O

C. CH3COOH

D. CH3COOH and H3O+