Stoichiometry MCQs

Question 1

If pH value of a solution is 8, then its pOH value will be

Accepted Answer

6

Answer

1

Answer

7

Answer

10

Question 2

Total energy at a point comprises of __________ energy.

Accepted Answer

All of the above

Answer

Potential & kinetic

Answer

Pressure

Answer

Internal

Question 3

For a reacation, X → Y, if the concentration of 'X' is tripled; the rate becomes nine times. The order of reaction is

Accepted Answer

2

Answer

0

Answer

1

Answer

3

Question 4

Number of gm moles of solute dissolved in one litre of a solution is called its

Accepted Answer

Molarity

Answer

Equivalent weight

Answer

Molality

Answer

Normality

Question 5

Size range of the colloidals particles is

Accepted Answer

5 - 200 milli-microns

Answer

50 - 200 microns

Answer

500 - 1000 microns

Answer

10 - 50 Angstrom

Question 6

The equilibria relations in a multicom-ponent and multiphase system can not be calculated with the help of the

Accepted Answer

Phase rule

Answer

Experimental data

Answer

Emperical equations

Answer

Theoretical equations

Question 7

At a temperature of 0°K, the molecules of a gas have only __________ energy.

Accepted Answer

Translational

Answer

Rotational

Answer

Vibrational

Answer

None of these

Question 8

In case of a ternery system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the

Accepted Answer

Both A & B

Answer

Solute concentration

Answer

Temperature

Answer

Neither A nor B

Question 9

A very dilute solution is prepared by dissolving 'x 1 ' mole of solute in 'x 2 ' mole of a solvent. The mole fraction of solute is approximately equal to

Accepted Answer

$$\frac{{{{	ext{x}}_1}}}{{{{	ext{x}}_2}}}$$

Answer

$$\frac{{{{	ext{x}}_2}}}{{{{	ext{x}}_1}}}$$

Answer

$$1 - \frac{{{{	ext{x}}_1}}}{{{{	ext{x}}_2}}}$$

Answer

$$\frac{1}{{{{	ext{x}}_2}}}$$