Chemical Process Industries (CPI) Flashcards

1
Q

Oxidation of SO2 to SO3 is favored by

A

Low Temperature and High Pressure

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2
Q

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

A

Salt peter (Potassium Nitrate)

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3
Q

The starting raw material for the manufacture of alum is

A

Bauxite

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4
Q

Paper pulp produced by kraft/sulfate process is

A

Strong and fibrous

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5
Q

Claude process of gas liquefaction employs

A

Adiabatic expansion against a piston or in a turbine

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6
Q

Viscose rayon is chemically

A

Regenerated cellulose acetate

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7
Q

Styrene is produced from ethyl benzene by the process of

A

Dehydrogenation

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8
Q

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

A

Collagen

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9
Q

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

A

15-20

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10
Q

Fusel oil is a/an

A

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

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11
Q

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

A

D. All of the above

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12
Q

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

A

ZnO (Zinc Oxide)

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13
Q

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

A

Oleum

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14
Q

Epoxy resin is a/an

A

Good adhesive

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15
Q

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

A

D. Pollution of water stream by mercury

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15
Q

Esterification reaction produces

A

Soap

16
Q

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

A

Adsorbs

17
Q

Producer gas consists mainly of

A

CO, CO2, N2, H2

18
Q

Neoprene is the trade name of

A

Polychloroprene

19
Q

Sulfur addition in soap is done to

A

Cure pimples and dandruff

20
Q

Phosphate rock is a raw material for the manufacture of

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

A

D. All of the above

20
Q

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

A

B. Greater tendency of decomposition at elevated temperature

21
Q

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

A

A. Iron oxide

22
Q

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

A

Sodium chloride

23
Q

Pasteurization of milk means

A

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

24
Q

Fusion of bauxite and _____ produces high alumina cement

A

Limestone

25
Q

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

A

Solvay

26
Q

Polycaprolactum is commercially known as

A

Nylon-6

27
Q

Frasch process is for

A

Mining sulfur

28
Q

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

A

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

29
Q

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

A

CO (Carbon monoxide)

30
Q

The drug used in contraceptives is

A

Mestranol

31
Q

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

A

White

32
Q

In the Lurgi coal gasifier,

A

Large quantity of coal can be processed.

33
Q

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

A

B. Used in color discharge tube