Chemical Process Industries (CPI)

Question 1

Oxidation of SO2 to SO3 is favored by

Answer 1

Low Temperature and High Pressure

Question 2

Gun powder, an explosive, comprise of charcoal, sulfur and ______.

Answer 2

Salt peter (Potassium Nitrate)

Question 3

The starting raw material for the manufacture of alum is

Answer 3

Bauxite

Question 4

Paper pulp produced by kraft/sulfate process is

Answer 4

Strong and fibrous

Question 5

Claude process of gas liquefaction employs

Answer 5

Adiabatic expansion against a piston or in a turbine

Question 6

Viscose rayon is chemically

Answer 6

Regenerated cellulose acetate

Question 7

Styrene is produced from ethyl benzene by the process of

Answer 7

Dehydrogenation

Question 8

Gelatin is a nitrogenous organic protein is obtained by the hydrolysis of

Answer 8

Collagen

Question 9

Sucrose content in the raw juice extracted from sugar cane is about ___%.

Answer 9

15-20

Question 10

Fusel oil is a/an

Answer 10

Mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses)

Question 11

Styrene-butadiene-rubber (SBR) as compared to natural rubber has

A. Poorer tensile strength
B. Poorer resistance to oxidation
C. Greater amount of heat build-up under heavy loading
D. All of the above

Answer 11

D. All of the above

Question 12

Coefficient of thermal expansion of glass is decreased by the addition of _____ during its manufacture.

Answer 12

ZnO (Zinc Oxide)

Question 13

The catalyst used in the manufacturing of DDT (from chloral and chlorobenzene) is

Answer 13

Oleum

Question 14

Epoxy resin is a/an

Answer 14

Good adhesive

Question 15

Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda?

A. High cost of mercury
B. High specific gravity of mercury
C. Non-availability of high-purity mercury
D. Pollution of water stream by mercury

Answer 15

D. Pollution of water stream by mercury

Question 15

Esterification reaction produces

Answer 15

Soap

Question 16

Wood charcoal is used for decoloration of sugar because it _____ the colored materials.

Answer 16

Adsorbs

Question 17

Producer gas consists mainly of

Answer 17

CO, CO2, N2, H2

Question 18

Neoprene is the trade name of

Answer 18

Polychloroprene

Question 19

Sulfur addition in soap is done to

Answer 19

Cure pimples and dandruff

Question 20

Phosphate rock is a raw material for the manufacture of

A. Phosphoric acid
B. Phosphorus
C. Superphosphates
D. All of the above

Answer 20

D. All of the above

Question 20

Mineral oils are preferred over fatty oils as a lubricant due to its

A. Poor oxidation stability and high gum-forming tendency
B. Greater tendency of decomposition at elevated temperature
C. Hydrolysis tendency in presence of water
D. All of the above

Answer 20

B. Greater tendency of decomposition at elevated temperature

Question 21

Which of the following is NOT a raw material used for the manufacture of ordinary glass?

A. Iron oxide
B. Soda ash
C. Limestone
D. Silica

Answer 21

A. Iron oxide

Question 22

Zeolites removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of

Answer 22

Sodium chloride

Question 23

Pasteurization of milk means

Answer 23

Killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics

Question 24

Fusion of bauxite and _____ produces high alumina cement

Answer 24

Limestone

Question 25

______ process is used for the manufacture of sodium carbonate by ammonia soda process

Answer 25

Solvay

Question 26

Polycaprolactum is commercially known as

Answer 26

Nylon-6

Question 27

Frasch process is for

Answer 27

Mining sulfur

Question 28

Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because A. Its calorific value is very less B. Tar neutralizes the residual acids present in pitch C. It reduces viscosity and imparts fluidity for its transportation through pieplines at economic pressure drop D. All of the above

Answer 28

C. It reduces viscosity and imparts fluidity for its transportation through pieplines at economic pressure drop

Question 29

Which is the main reducing agent during the production of iron from iron ore in a blast furnace?

Answer 29

CO (Carbon monoxide)

Question 30

The drug used in contraceptives is

Answer 30

Mestranol

Question 31

Raw materials used for producing _____ cement does not contain iron oxide.

Answer 31

White

Question 32

In the Lurgi coal gasifier,

Answer 32

Large quantity of coal can be processed.

Question 33

Neon gas is A. Flammable in nature B. Used in color discharge tube C. Filled in lamps having tungsten filament D. All of the above

Answer 33

B. Used in color discharge tube