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CPI > section 4 > Flashcards

section 4 Flashcards

1
Q

Starting material for the production of styrene butadiene rubber (SBR) is
a. ethyl alcohol
b. ethylene
c. both (a) & (b)
d. neither (a) nor (b)

A

c

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2
Q

Which one of the following is not an elastomer?
a. Polyisoperene
b. Neoprene
c. Nitrile-butadiene
d. None of these

A

d

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3
Q

Which of the following processes can remove both temporary as well as permanent hardness of water?
a. Filtration
b. Boiling
c. Distillation
d. None of these

A

c

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4
Q

Dacron is a
a. condensation product of hexam-ethylene
diamine and adipic acid.
b. thermosetting material.
c. condensation product of dimethyl
terephthalate and ethylene glycol.
d. none of these.

A

d

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5
Q

Rancidity of the fatty oil can be reduced by its
a. decoloration
b. hydrogenation
c. oxidation
d purification

A

b

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6
Q

Platinum catalyst used in the earlier days of
sulphuric acid manufacture by contact process
suffers from the drawback like
a. high cost
b. fragile nature
c. easy poisoning tendency
d. all (a), (b) and (c)

A

d

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7
Q

__________ of rubber decreases after its
vulcanisation.
a. Resistance to the action of organic solvent
b. Tackiness
c. Maximum service temperature
d. Tensile strength

A

b

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8
Q

Boiling of water containing temporary hardness produces
a. CO2
b. CaSO4
c. CaHCO3
d. none of these

A

a

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9
Q

Starting material for the commercial production of ethyl alcohol in India is
a. rice
b. molasses
c. fruit of Mahua tree
d. Maize

A

b

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10
Q

Phenol formaldehyde
a. employs addition polymerisation.
b. employs condensation polymerisation.
c. is a monomer.
d. is an abrasive material.

A

b

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11
Q

Which of the following is not an insecticide?
a. Hydrocyanic acid
b. Nicotine
c. Sodium flouride
d. Hexane

A

d

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12
Q

Shrinkage volume in cement setting does not depend upon the
a. sand to cement ratio.
b. water to cement ratio.
c. ambient temperature fluctuation.
d. drying period.

A

a

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13
Q

Bisphenol A is produced by the condensation of acetone with
a. formaldehyde
b. ethyl alcohol
c. diethyl ether
d. Phenol

A

d

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14
Q

In Kraft process of paper manufacture, white cooking liquor consists of caustic soda
a. sodium sulphide & sodium carbonate.
b. sodium sulphite & sodium carbonate.
c. sodium sulphite & sodium sulphide.
d. none of these.

A

a

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15
Q

Presence of carbonaceous matter in the sewage

a. causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures.
b. reduces sulphate ions to sulphides causing obnoxious smell.
c. increases the quantity of chlorine used for its purification.
d. all (a), (b) and (c).

A

d

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16
Q

A mineral is termed as ‘ore’, if
a. a metal can be economically extracted from it.
b. it contains ≥ 40% metal.
c. the metal present in it is costly.
d. all (a), (b) and (c).

A

a

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17
Q

In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst
a. gives higher conversion efficiency.
b. has a longer life and is not poisoned by arsenic.
c. handles lower SO2 content gas (7 -10% SO2), thus increasing the capital cost of the plant.
d. all (a), (b) and (c).

A

d

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18
Q

At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is
proportional to (where, P = pressure of the system)
a. P
b. Sqrt of P
c. P^2
d. 1/P

A

b

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19
Q

Oleum produces fumes of
a. SO2
b. H2SO4
c. SO3
d. SO2 + H2SO4

A

c

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20
Q

20% oleum means that in 100 kg oleum, there are 20 kg of
a. SO3 and 80kg of H2SO4.
b. H2SO4 and 80kg of SO3.
c. SO3 for each 100 kg of H2SO4.
d. none of these.

A

a

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21
Q

Chloramines are used in water treatment for
a. disinfection and control of taste & odour.
b. corrosion control.
c. removing turbidity.
d. control of bacteria.

A

a

22
Q

Glycerine is recovered from lye by
a. evaporation followed by vacuum
distillation.
b. liquid extraction technique.
c. extractive distillation technique.
d. none of these.

A

a

23
Q

Inversion of sucrose produces
a. fructose
b. glucose
c. both (a) & (b)
d. neither (a) nor (b)

A

b

24
Q

Enzymes are organic catalysts used in the _________ reactions.
a. chemical
b. biochemical
c. photochemical
d. Electrochemical

A

b

25
Q

Linde process of gas liquefaction employs exchange of heat with colder stream.
a. adiabatic expansion through a throttle valve
(Joule-Thomson expansion).
b. adiabatic expansion against a piston or in a
turbine.
c. merely compressing the gas beyond its
critical pressure.

A

a

26
Q

Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is
__________ percent.
a. 10
b. 50
c. 80
d. 95

A

b

27
Q

Ore concentration by froth floatation utilises the __________ of ore particles.
a. density difference
b. wetting characteristics
c. terminal velocities
d. none of these

A

b

28
Q

The main use of activated carbon in water treatment is to control
a. bacterial growth
b. taste and odour
c. turbidity
d. none of these

A

b

29
Q

The most commonly used substance to speed up the sedimentation of sewage is
a. lime
b. sulphuric acid
c. chlorine
d. sodium bisulphite

A

a

30
Q

Sucrose is a
a. monosaccharide
b. disaccharide
c. polysaccharide
d. none of these

A

b

31
Q

Sugar content in sugarcane on cane basis is about __________ percent by weight.
a. 1 to 5
b. 5 to 10
c. 15 to 20
d. 20 to 30

A

b

32
Q

Pick out the wrong statement.
a. Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye respectively.
b. Protein catalysts are called enzymes.
c. The rate of chemical reaction is
independent of the concentration of
reactants at high concentration of enzymes.
d. Total sugar content in molasses is about 10%.

A

d

33
Q

The major use of butadiene is
a. as a plasticiser for unsaturated polyester.
b. in the manufacture of synthetic rubber.
c. as an anti-skinning agent in paint.
d. none of these.

A

b

34
Q

The manufacture of Kraft pulp is done by a/an __________ process.
a. alkaline
b. acidic
c. neutral
d. none of these

A

a

35
Q

Antibiotic
a. inhibits/destroys the growth of
microorganisms.
b. is used as a pain reliever.
c. is an antimalarial.
d. is an anaesthetic.

A

a

36
Q

Which of the following paper does not require a filler during manufacture ?
a. Bond paper
b. Writing paper
c. Blotting paper
d. Coloured paper

A

c

37
Q

Industrial production of chloroform requires acetone and
a. phosgene
b. calcium hypochlorite
c. chlorine
d. ammonium chloride

A

b

38
Q

Pencillin, an antibiotic drug was discovered by
a. Alexender
b. Flaming
c. Dr. Zivago
d. none of these

A

a

39
Q

Styrene (a monomer for the production of polystyrene) is commercially produced by
a. catalytic dehydrogenation of ethyl benzene.
b. dehydration of ethyl alcohol followed by
hydrogenation.
c. reacting ethylene oxide with acetal-dehyde.
d. fermentation of starch.

A

a

40
Q

Hydrogenation of oil takes place in a/an __________ reactor.
a. autothermal
b. trickle bed
c. plug flow
d. none of these

A

b

41
Q

Fatty material used in soap making is
a. fatty acid
b. fatty alcohols
c. tallow
d. Detergents

A

c

42
Q

__________ glass is used for the manufacture of optical glass.
a. Pyrex
b. Soda
c. Flint
d. Crooke’s

A

c

43
Q

Thermosetting plastic materials
a. can be repeatedly melted.
b. is useful for melt casting.
c. can not be melted after forming.
d. is useful for spinning.

A

c

44
Q

Favourable conditions for the liquefaction of gases in general are
a. high pressure & low temperature.
b. low pressure & high temperature.
c. high pressure & high temperature.
d. low pressure & low temperature.

A

a

45
Q

In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed :
a. furnace → converter → absorber
b. furnace → evaporator → absorber
c. furnace → converter → evaporator
d. converter → furnace → absorber

A

a

46
Q

__________ nature of hypo (sodium
thiosulphate) makes it useful in photography.
a. Oxidising
b. Reducing
c. Complex forming
d. Photochemical

A

c

47
Q

__________ is an ore of lead.
a. Quartz
b. Galena
c. Siderite
d. Chalcopyrite

A

b

48
Q

Which of the following is an yellow pigment?
a. Titanium dioxide
b. Ferrous sulphate
c. Lead chromates
d. Zinc sulphides

A

c

49
Q

Catalytic oxidation of toluene produces
a. styrene
b. phenol
c. benzene
d. Tri-nitro-toluene

A

b

50
Q

SO2 is bubbled through hot sugar cane juice to
a. act as an acidifying agent.
b. increase its concentration.
c. increase the amount of molasses.
d. increase the crystal size.

A

a

CPI (14 decks)

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