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Chemical Process MCQ Questions & Answers

Chemical Process MCQs : This section focuses on the "Chemical Process". These Multiple Choice Questions (MCQs) should be practiced to improve the Chemical Process skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.




Question 1

The drug used in contraceptives is

A. sulphadizene
B. mestranol
C. methyl salicylate
D. pencillin

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Question 2

Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of

A. callagen
B. tannin
C. molasses
D. carbohydrate

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Question 3

Pasteurisation of milk means

A. removal of fatty and albuminous substance from it.
B. killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics.
C. inhibiting the growth of micro-organisms without killing them.
D. none of these.

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Question 4

The combustion reaction, C + O2 = CO2, is

A. exothermic
B. endothermic
C. autocatalytic
D. none of these

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Question 5

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 (a), (b) and (c).

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Question 6

Which of the following sugars is the sweetest?

A. Glucose
B. Fructose
C. Sucrose
D. Lactose

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Question 7

Hard water

A. does not affect the lather formation by soap.
B. is not unfit for drinking purpose.
C. pollutes the water stream.
D. all (a), (b) and (c).

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Question 8

Epoxy resin

A. is a good adhesive.
B. is an elastomer.
C. cannot be used for surface coatings.
D. is a polyester.

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Question 9

Frasch process is for

A. making oxygen
B. producing helium
C. mining sulphur
D. making nitrogen

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Question 10

Pick out the endothermic reaction out of the following.

A. C+O2 = CO
B. CO + 3H2 = CH4 + H2O
C. CaCO3 = CaO + CO2
D. CO +O2 = CO2

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Question 11

In sulphate pulp manufacture, the pressure and temperature in the digestor is

A. 10 atm., 800 °C
B. 10 atm., 170-180°C
C. 1 atm., 170 - 180°C
D. l atm., 800°C

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Question 12

Polycaprolactum is commercially known as

A. nylon-6
B. nylon-66
C. dacron
D. rayon

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Question 13

Zeolite 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. calcium sulphate
B. sodium chloride
C. sodium sulphate
D. magnesium chloride.

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Question 14

Viscose rayon is chemically

A. cellulose nitrate
B. regenerated cellulose nitrate
C. cellulose acetate
D. regenerated cellulose acetate

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Question 15

Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.

A. adsorbs
B. oxidises
C. reduces
D. converts

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Question 16

Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.

A. 10
B. 25
C. 50
D. 98

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Question 17

Sucrose content in the raw juice extracted from sugar cane is about __________ percent.

A. 01-Feb
B. 15 - 20
C. 50 - 60
D. 80 - 85

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Question 18

Sulphur addition in soap is done to

A. improve the soap texture.
B. cure pimples & dandruff.
C. fasten lather formation.
D. increase its cleansing action.

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Question 19

Fusion of bauxite and __________ produces high alumina cement.

A. alum
B. limestone
C. coke
D. quartz

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Question 20

The chamber process is

A. preferred over contact process for producing 98 to 100% H2SO4 and various oleums.
B. non-catalytic and operates only on pyrites.
C. a batch process for directly producing high strength (98 to 100%) H2SO4.
D. none of these.

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Question 21

Starting raw material for the manufacture of alum is

A. alumina
B. gypsum
C. bauxite
D. ammonium bicarbonate

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Question 22

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

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Question 23

Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

A. CaO
B. MnO2
C. ZnO
D. FeS

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Question 24

Phosphate rock is a raw material for the manufacture of

A. phosphoric acid
B. phosphorous
C. superphosphates
D. all (a), (b) and (c)

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Question 25

Which of the following is an organo-metal-lic compound ?

A. Isopropyl alcohol
B. Tetra-ethyl lead
C. Zeolite
D. Cumene

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Question 26

Producer gas consists mainly of

A. CO, CO2 N2, H2
B. CO, H2
C. H2, CH4
D. C2H2, CO2, H2

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Question 27

Neon gas is

A. flammable in nature.
B. used in color discharge tube.
C. filled in lamps having tungsten filament.
D. all (a), (b) and (c).

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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 neutralises the residual acids present in pitch.
C. it reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop.
D. all (a), (b) and (c).

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Question 29

All enzymes are made of

A. fats
B. carbohydrates
C. proteins
D. amino acids

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Question 30

Paper pulp produced by kraft/sulphate process is

A. bleached easily
B. dull white in color
C. strong fibrous
D. dark colored

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Question 31

Oxidation of SO2 to SO3 is favoured by

A. low temperature and low pressure.
B. low temperature and high pressure.
C. high temperature and low pressure.
D. high temperature and high pressure.

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Question 32

Claude process of gas liquefaction employs

A. merely compression of gas beyond its critical pressure.
B. Joule-Thomson expansion cooling.
C. heat exchange with colder stream.
D. adiabatic expansion against a piston or in a turbine.

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Question 33

Styrene is produced from ethyl benzene by the process of

A. dehydrogenation
B. oxidation
C. alkylation
D. dehydration

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Question 34

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.

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Question 35

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

A. C
B. CO
C. CO2
D. H2

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Question 36

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

A. dilute H2SO4
B. oleum
C. ultraviolet light
D. none of these

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Question 37

In the Lurgi coal gasifier

A. coking coals cannot be used.
B. low carbon conversion efficiency is achieved.
C. entrainment of solids is higher.
D. large quantity of coal can be processed.

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Question 38

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

A. Ostwald's
B. Bosch
C. Solvay
D. Haber's

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Question 39

The main use of HCl is in the

A. drilling of petroleum wells and pickling of steel sheets.
B. manufacture of cationic detergent.
C. treatment of spent fuel of nuclear reactor.
D. none of these.

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Question 40

Salt cake is chemically represented by

A. Na2SO4
B. CaSO4.H2O
C. MgSO4
D. BaSO4

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Question 41

Haemoglobin is a/an

A. amino acid
B. biological catalyst
C. protein
D. enezyme

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Question 42

Neoprene is the trade name of

A. polyurathane
B. phenol formaldehyde
C. polychloroprene
D. styrene-butadiene rubber

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Question 43

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

A. waterproof
B. slag
C. white
D. pozzolan

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Question 44

Esterification reaction

A. produces soap.
B. is reversible.
C. is a reaction between an alcohol and an organic acid.
D. all (a), (b) and (c).

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Question 45

Very fine suspended and colloidal impurities are removed from water by a process called

A. sedimentation
B. coagulation
C. disinfection
D. softening

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Question 46

Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) 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 (a), (b) and (c).

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Question 47

Esterification reaction produces

A. detergent
B. vanaspati
C. soap
D. mercaptans

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Question 48

The gasification reaction represented by, C + H2O = CO + H2, is a/an __________ reaction.

A. exothermic
B. endothermic
C. catalytic
D. autocatalytic

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Question 49

Gun powder, which is an explosive comprises of charcoal, sulphur and

A. glycerene
B. salt petre
C. nitro glycerene
D. dynamite

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Question 50

Fusel oil is a/an

A. essential oil.
B. extract from medicinal herbs.
C. mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses).
D. none of these.

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