IIT JEE/IIT JEE Chemical Equilibrium Sample Test,Sample questions

Question:
0.1 M solution of which of the substance will behave basic?

1.sodium borate

2.ammonium chloride

3.calcium nitrate

4.sodium sulphate.

Posted Date:-2021-10-01 08:53:46


Question:
200 mL of M/50 HCl are mixed with 100 mL of M/100 HCl the pH of the resulting solution would be

1.2.22

2.1.78

3.2

4.zero.

Posted Date:-2021-10-01 08:53:46


Question:
A substance x dissolves in water with a decrease in volume and absorption of heat solubility of X will be favoured by

1.low pressure high temp.

2.low temp. high pressure

3.low temp. low pressure

4.high temperature high pressure

Posted Date:-2021-10-01 08:53:46


Question:
According to Le Chateliers principal adding heat to a solid and liquid in equilibrium will cause the

1.amount of solid to decrease

2.amount of liquid to decrease

3.temperature to rise

4.temperature to fall.

Posted Date:-2021-10-01 08:53:46


Question:
Equilibria are those in which the reactants and products are present in more than phases:

1.Physical

2.Heterogeneous

3.Chemical

4.Homogeneous

Posted Date:-2021-10-01 08:53:46


Question:
Equilibrium constant changes with

1.time

2.temperature

3.pressure

4.both temperature and concentration

Posted Date:-2021-10-01 08:53:46


Question:
Homogeneous equilibrium is one in which there are

1.all the three phases

2.no phases

3.two phases

4.one phase

Posted Date:-2021-10-01 08:53:46


Question:
In a reversible reaction two substances are in equilibrium. If the concentration of each one is doubled the equilibrium constant will be

1.Reduced to half its original value

2.Reduced to one fourth of its original value

3.Doubled

4.Constant.

Posted Date:-2021-10-01 08:53:46


Question:
In the case of exothermic reactions equilibrium constant Kdecreases with temperature

1.remains unchanged with temperature

2.depends on the nature

3.decreases with temperature

4.increases with pressure

Posted Date:-2021-10-01 08:53:46


Question:
Melting of ice is favoured by

1.low pressure high temp.

2.low temp. low pressure

3.high pressure low temp.

4.high temp. high pressure

Posted Date:-2021-10-01 08:53:46


Question:
On mixing 1 mole of ethyl alcohol with 1 mole of acetic acid at 298 K the equilibrium concentration of ester and water becomes 2/3 moles each. If 3 moles of alcohol is mixed with 1 mole of acid the concentration of ester in moles at equilibrium will be

1.0.09

2.0.9

3.1.1

4.2.2

Posted Date:-2021-10-01 08:53:46


Question:
Ostwalds dilution law is applicable to

1.Strong electrolytes only

2.Week electrolytes only

3.Non-electrolytes

4.Strong as well as weak electrolytes

Posted Date:-2021-10-01 08:53:46


Question:
Reaction between silver nitrate and sodium chloride goes to completion because

1.the reaction is instantaneous

2.silver nitrate is insoluble in water

3.silver chloride is sparingly soluble in water

4.solubility of silver nitrate increases with sodium chloride

Posted Date:-2021-10-01 08:53:46


Question:
Sulphanilic acid is a/an

1.Arrhenius acid

2.Lewis base

3.Neither (a) nor (b)

4.Both (a) and (b).

Posted Date:-2021-10-01 08:53:46


Question:
The chemical system in equilibrium is not affected by

1.change in the concentration of products

2.increase in the concentration of reactants

3.addition of a catalyst

4.changing the temperature

Posted Date:-2021-10-01 08:53:46


Question:
The pH of 0.1 M acetic acid is

1.1

2.zero

3.less than 1

4.more than 1.

Posted Date:-2021-10-01 08:53:46


Question:
To a solution equimolar mixture of sodium acetate solution is added. The pH of mixture solution

1.increase

2.decreases

3.remains unchanged

4.unpredictable.

Posted Date:-2021-10-01 08:53:46


Question:
Which of the following aqueous solutions will have highest pH?

1.Sodium acetate

2.Sodium chloride

3.Ammonium phosphate

4.Calcium chloride.

Posted Date:-2021-10-01 08:53:46


Question:
Which of the following is not a Lewis base?

1.An acid is added to it

2.A base is added to it

3.Either a base or an acid is added to it

4.Temperature is raised.

Posted Date:-2021-10-01 08:53:46


Question:
Which of the following statements is correct about the equilibrium constant?

1.Its value increases by increase in temperature

2.Its value decreases by decrease in temperature

3.Its value may increase or decrease with increase in temperature

4.Its value is constant at all temperature.

Posted Date:-2021-10-01 08:53:46


Question:
Which of the following statements is not correct regarding the equilibrium constant?

1.Its value does not depend upon the initial conc. of the reactants

2.Its value does not depend upon the initial conc. of the products

3.Its value does not depend upon nature of the reactants

4.Its value does not depend upon presence of catalyst.

Posted Date:-2021-10-01 08:53:46


Question:
Which of the following will not change the concentration of ammonia at the equilibrium?

1.Increase of pressure

2.Increase of volume

3.Addition of catalyst

4.Decrease of temperature.

Posted Date:-2021-10-01 08:53:46


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