hitechpathshala

Q. 1

Ammonium chloride dissolves in water with the absorption of heat. Which of the following is true?

The solubility of ammonium chloride decreases with increase in temperature.

The solubility of ammonium chloride increases with increase in temperature.

At higher temperature, ammonium chloride in solution exists as ammonia and hydrochloric acid.

At lower temperature ammonium chloride in solution is present in the molecular form.

Q. 2

A

B

C

D

Q. 3

The concentration of a pure condensed (solid or liquid) phase is not included in the expression of equilibrium constant because

solid and liquid concentrations are independent of their quantities.

solids and liquids react slowly

solids and liquids at equilibrium have no interactions with the gaseous phase

the molecules in solids and liquids cannot migrate to the gaseous phase

Q. 4

A

B

C

D

Q. 5

A

B

C

D

Q. 6

A

B

C

D

Q. 7

A

B

C

D

Q. 8

A

B

C

D

Q. 9

A

B

C

D

Q. 10

A

B

C

D

Q. 11

A

B

C

D

Q. 12

A

B

C

D

Q. 13

A

B

C

D

Q. 14

Negative

Positive

Zero

Undefined

Q. 15

A

B

C

D

Q. 16

A

B

C

D

Q. 17

A

B

C

D

Q. 18

A

B

C

D

Q. 19

A

B

C

D

Q. 20

A

B

C

D

Q. 21

A small value of K, the equilibrium constant, indicates that

the concentration of the un-ionized molecules must be relatively small compared to the ion concentrations.

the concentration of the ionized molecules must be larger than the ion concentration

the substance ionizes to a large degree

the concentration of the un-ionized molecules must be relatively large compared to the ion concentration.

Q. 22

A

B

C

D

Q. 23

Which of the following is correct from the point of view of Le-Chatelier’s principle?

if a system is at equilibrium and the partial pressure of one of the reactant in the gas phase is increased then the system will readjust to decrease the partial pressure of that reactant.

for a system involving gases, when the total pressure is increased in a homogeneous case the system will react in such a way as to decrease the total number of molecules.

if a system at equilibrium is subjected to a charge which displaces it from the equilibrium, a net reaction will occur in a direction that counteracts the change.

all statements a, b and c are cor

Q. 24

A

B

C

D

Q. 25

A

B

C

D

Q. 26

A

B

C

D

Q. 27

A

B

C

D

Q. 28

A

B

C

D

Q. 29

A

B

C

D

Q. 30

A

B

C

D

Q. 31

A

B

C

D

Q. 32

A

B

C

D

Q. 33

A

B

C

D

Q. 34

A

B

C

D

Q. 35

A

B

C

D

Q. 36

A

B

C

D

Q. 37

A

B

C

D

Q. 38

A

B

C

D

Q. 39

A

B

C

D

Q. 40

A

B

C

D

Q. 41

A

B

C

D

Q. 42

A

B

C

D

Q. 43

A

B

C

D

Q. 44

A

B

C

D

Q. 45

A

B

C

D

Q. 46

A

B

C

D

Q. 47

A

B

C

D

Q. 48

A

B

C

D

Q. 49

A

B

C

D

Q. 50

A

B

C

D

CHEMISTRY QUIZ 83(CHEMICAL EQUILIBRIUM 1)1)

Marks: 200