Stoichiometry - Section 1 (2)

Directions to Solve

Stoichiometry - Section 1

In this section, you will find the problem and MCQs related to this field and
you can solve them easily without any problem.

9.

The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour

A.	measures the elevation in boiling point.
B.	is not dependent on the temperature.
C.	is a function of the liquid phase composition.
D.	measures the depression in freezing point.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

10.

Increasing the temperature of an aqueous solution will cause decrease in its

A.	molality
B.	mole fraction
C.	weight percent
D.	molarity

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

11.

Pick out the wrong unit conversion of calorific value.

A.	1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg.
B.	1 BTU/ft3 = 8.9 kcal/m3 = 0.038 MJ/m3.
C.	1 BTU/lb = 2.3 kcal/kg.
D.	1 kcal/m3 = 0.1124 BTU/ft3.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

12.

6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H₂ produced will be __________ gm.

A.	0.5
B.	1
C.	3
D.	5

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

13.

Average molecular weight of air is about

A.	21
B.	29
C.	23
D.	79

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

14.

A solution is made by dissolving 1 kilo mole of solute in 2000 kg of solvent. The molality of the solution is

A.	2
B.	1
C.	0.5
D.	0.5

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

15.

At room temperature, the product [H⁺] [OH^-] in a solution is 10^-14 moles/litre. If, [OH^-] = 10^-6 moles/litre, then the pH of the solution will be

A.	6
B.	8
C.	10
D.	12

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

16.

Vapor pressure of water at 100°C is about __________ bar.

A.	0.1013
B.	1.013
C.	10.13
D.	101.3

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

1
2
3
4
5
6
7