STOICHIOMETRY QUIZ

'Cox' chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the

Temperature vs. log (vapor pressure)

Vapor pressure vs. log (temperature)

Vapor pressure vs. temperature

Log (temperature) vs. log (vapor pressure)

TRUE ANSWER : ?
YOUR ANSWER : ?

A saturated vapor on being compressed would

Condense

Form wet steam

Both A & B

Neither A nor B

TRUE ANSWER : ?
YOUR ANSWER : ?

Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half, will result in __________ in the volume of the gas.

Four fold increase

Doubling

No change

L/4th reduction

TRUE ANSWER : ?
YOUR ANSWER : ?

N.T.P. corresponds to

1 atm.absolute pressure& 0°C

101.325 KPa gauge pressure & 0°C

760 torr & 15°C

760 mm Hg gauge pressure & 0°C

TRUE ANSWER : ?
YOUR ANSWER : ?

Isotopes are atoms having the same

Mass number

Number of neutrons

None of these

Atomic mass

TRUE ANSWER : ?
YOUR ANSWER : ?

For most salts, the solubility increases with rise in temperature, but the solubility of __________ is nearly independent of temperature rise.

Hypo

Anhydrous sodium sulphate

Sodium carbonate monohydrate

Sodium chloride

TRUE ANSWER : ?
YOUR ANSWER : ?

1 kg of calcium carbide (CaC₂) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour?

15

10

5

20

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Molality

Molarity

Mole fraction

Weight percent

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Equivalent weight

Molarity

Normality

Molality

TRUE ANSWER : ?
YOUR ANSWER : ?

The unit of dynamic viscosity is

Poise

Gm/cm sec

Both B & C

Stoke

TRUE ANSWER : ?
YOUR ANSWER : ?

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