Stoichiometry MCQs

Question 1

Number of gram equivalent of solute dissolved in one litre of solution is called its

Accepted Answer

Normally

Answer

Molarity

Answer

Molality

Answer

Formality

Question 2

One of the specific gravity scales is "Brix" (used speicifically for sugar solution). It is defined as

Accepted Answer

Brix = (400/G) - 400

Answer

Brix = 200 (G-1)

Answer

Brix = 145 - (145/G)

Answer

None of these

Question 3

As per Kirchoff s equation, the heat of reaction is affected by the

Accepted Answer

Temperature

Answer

Pressure

Answer

Volume

Answer

Molecularity

Question 4

On mixing 56 gm of CaO with 63 gm of HNO 3 , the amount of Ca(NO 3 ) 2 formed is __________ gm.

Accepted Answer

82

Answer

164

Answer

41

Answer

8.2

Question 5

The hydroxyl ion (OH - ) concentration in a solution having pH value 3 will be

Accepted Answer

10 -11

Answer

10 -10

Answer

10 -3

Answer

10 -4

Question 6

Pick out the wrong statement about the recycle stream in a process.

Accepted Answer

Recycling in a process does not help in getting higher extent of reaction

Answer

Recycling in a process stream helps in utilising the valuable reactants to the maximum with minimum loss of reactants

Answer

The ratio of the quantity of a reactant present in the reactor feed of a recycling operation to the quantity of the same reactant entering the process as fresh feed is called combined feed ratio

Answer

Recycling is exemplified by refluxing back a part of the distillate to the distillation column to maintain the quantity of liquid within the column

Question 7

Which of the following is followed by an ideal solution ?

Accepted Answer

Raoult's law

Answer

Boyle's law

Answer

Amgat's law

Answer

Trouton's rule

Question 8

How much O 2 can be obtained from 90 kg of water?

Accepted Answer

80 kg

Answer

32 kg

Answer

64 kg

Answer

90 kg

Question 9

The average translational kinetic energy with which a gas molecule is endowed is dependent on its

Accepted Answer

Absolute temperature

Answer

Nature

Answer

Size

Answer

All of the above