Chemical Process MCQs

Question 1

Ordinary glass is not a/an

Accepted Answer

Material with sharp definite melting point

Answer

Amorphous isotropic material

Answer

Supercooled liquid

Answer

Electrical insulator

Question 2

Absorption of SO3 in 97% H2SO4 is

Accepted Answer

Exothermic

Answer

Endothermic

Answer

Not possible

Answer

None of these

Question 3

The most reactive allotropic form of phosphorus is __________ phosphorus.

Accepted Answer

Yellow

Answer

Red

Answer

Violet

Answer

Black

Question 4

Phosphoric acid is prepared from

Accepted Answer

Rock phosphate

Answer

Cryolite

Answer

Chalcopyrite

Answer

None of these

Question 5

Hydrogen gas is not produced commercially (for nitrogeneous fertiliser manufacture) by

Accepted Answer

Iron-steam reaction

Answer

Electrolysis of water

Answer

Steam reforming of naphtha

Answer

Its cryogenic separation from coke oven gas

Question 6

Sea water contains about __________ ppm of bromine.

Accepted Answer

70

Answer

5

Answer

500

Answer

1700

Question 7

Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is about __________ °C.

Accepted Answer

-183

Answer

-83

Answer

-196

Answer

-218

Question 8

Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about __________ °C.

Accepted Answer

-183

Answer

-53

Answer

-103

Answer

-196

Question 9

Parathion and Malathion are

Accepted Answer

Pesticides

Answer

Plasticisers for unsaturated polysters

Answer

Pain-relieving drugs (analgesic)

Answer

Tranquilisers