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CPI > section 12 > Flashcards

section 12 Flashcards

1
Q

In the manufacture of viscose rayon, the raw
material used industrially is
a. recalyptious wood
b. bamboo
c. bagasse
d. fine teak wood

A

d

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2
Q

Bordeaux mixture is a/an
a. fertiliser
b. inorganic fungicide
c. insecticide
d. Explosive

A

b

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3
Q

Silicone is a/an
a. thermoplastic
b. inorganic polymer
c. monomer
d. none of these

A

b

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4
Q

Nickel is not used as a catalyst in the __________
reaction.
a. shift conversion
b. oil hydrogenation
c. steaming reforming of naphtha
d. ammonia cracking/dissociation

A

a

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5
Q

Roasting of metallurgical ores is done mainly to
a. dehydrate it.
b. sinter the ore.
c. remove CO2 & H2O.
d. remove arsenic & sulphur.

A

d

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6
Q

Molasses is the starting material for the
production of
a. alcohol
b. essential oil
c. fatty acids
d. Massecuite

A

a

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7
Q

BHC (Benzene hexachloride) is made by the
chlorination of benzene
a. which is an addition reaction.
b. which is a substitution reaction.
c. in absolute dark.
d. in presence of sunlight.

A

a

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8
Q

Diaphragm electrolytic cell as compared to
mercury electrolytic cell
a. produces 70% NaOH solution.
b. requires less specific power consumption
for the production of chlorine.
c. requires lesser investment for similar
capacity.
d. all (a), (b) and (c).

A

c

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9
Q

Calcareous & argillaceous materials are used in
the manufacture of
a. lead
b. cement
c. carbon disulphide
d. none of these

A

b

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10
Q

Pick out the wrong statement.
a. Azoic dyes are mostly applied on cotton
fabrics.
b. Basic dyes (e.g. amino derivatives) are
applied mostly to paper.
c. Mordant dyes are applied mainly to wools.
d. none of these.

A

d

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11
Q

Commercial production of calcium carbide
requires limestone and __________ as raw
materials.
a. coke
b. sand
c. soda ash
d. fuel oil

A

a

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12
Q

Which one of the following is not likely to be a
constituent of vegetable oils?
a. Citric acid
b. Oleic acid
c. Stearic acid
d. Glycerol

A

a

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13
Q

Nitroglycerene absorbed in wood flour, sodium
nitrate or ammonium nitrate is commercially used
as a controlled explosive called dynamite. The raw
material used for its manufacture are glycerene,
nitric acid and
a. sulphuric acid
b. phosphoric acid
c. hydrochloric acid
d. hydroflouric acid

A

a

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14
Q

The process involved in converting rubber into
a thin sheet or coating it on fabric is called
a. extrusion
b. mastication
c. calendering
d. Valcanisation

A

c

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15
Q

Detergent is produced by the sulphonation of
dodecyl benzene, which is an __________ reaction.
a. endothermic
b. exothermic
c. irreversible
d. both (b) and (c)

A

d

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16
Q

Air used in aerobic fermentation must be
sterilized, otherwise the
a. recovery of product will be difficult.
b. contamination of pure culture would result.
c. uniformity of product cannot be achieved.
d. none of these.

A

b

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17
Q

Alkylbenzene sulfonate (ABS) is a
a. detergent
b. rubber
c. pesticide
d. Polyester

A

a

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18
Q

High temperature carbonisation of coal
produces
a. inferior coke compared to low temperature
carbonisation.
b. less of gases compared to liquid products.
c. larger quantity of tar compared to low
temperature carbonisation.
d. none of these.

A

d

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19
Q

Alcohol content in freshly prepared natural and
fortified wine may be respectively around
__________ percent.
a. 7-14 and 14-30
b. 7-14 and 40-50
c. 14 - 30 and 40-50
d. 10 - 20 and 40 - 50

A

a

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20
Q

Setting of plaster of paris is accompanied with
a. hydration
b. dehydration
c. hydrolysis
d. loss of CO2

A

a

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21
Q

Process conditions in fermentator used for
production of penicillin is
a. 25°C, 2 atm.
b. 50°C, l0 atm.
c. 30°C, 200 mm Hg (absolute).
d. 90°C, 45 atm.

A

a

22
Q

Platinum is a versatile catalyst for many
processes in chemical industries. It is highly prone
to be poisoned by the presence of
a. carbon
b. arsenic
c. lead
d. Sulphur

A

b

23
Q

Sodium chloride content in sea water is about
__________ gms/litre.
a. 2
b. 10
c. 25
d. 50

A

c

24
Q

Fluorescent dyes are added in detergents to
a. act as fabric brightener (by converting
ultraviolet light to visible light) thereby
improving the whiteness appearance of
white fabrics.
b. attain distinctiveness from other brands.
c. act as tarnish inhibitor for metals like
German silver.
d. none of these

A

a

25
Q

High magnesia lime is added to hot sugar cane
juice (during the manufacture of sugar) to
a. flocculate the impurities.
b. facilitate fast filtration.
c. both (a) and (b).
d. neither (a) nor (b).

A

c

26
Q

Polyvinyl chloride (PVC) is
a. a thermosetting material.
b. a condensation polymerisation product.
c. made by employing emulsion
polymerisation.
d. none of these.

A

c

27
Q

Bleaching of paper pulp is done with
a. activated clay
b. bromine
c. chlorine or chlorine dioxide
d. magnesium sulphite

A

c

28
Q

Pick out the wrong statement.
a. Kraft method of pulp manufacture can
process all types of fibrous raw materials.
b. Digestion time for bagasse is less than that
for wood base materials.
c. Both temperature and pressure in the
digestor is less in case of the sulphite
method as compared to that in the sulphate
method.
d. none of these.

A

d

29
Q

Isopropyl benzene produced by alkylation of
benzene with propylene is known as
a. neoprene
b. cumene
c. gelatin
d. Mercaptans

A

b

30
Q

Consider the production of ammonia from
methene and air as raw materials. The catalyst used
are: (i) __________ for steam reforming of methane
and (ii) __________ for ammonia synthesis.
a. i - Ni/Al2O3; ii - Cu - ZnO/Al2O3
b. i - Fe/Al2O3; ii - Cu - ZnO/Al2O3
c. i - Ni/Al2O3; ii - Fe/Al2O3
d. i - Fe/Al2O3; ii - Ni/Al2O3

A

c

31
Q

For the hydrogenation of oils __________ (A)
__________ is commonly used as catalyst and
__________ (B) __________ is a catalyst poison.
a. (A) platinum (B) sulphur
b. (A) palladium (B) oxygen
c. (A) nickel (B) sulphur
d. (A) nickel (B) oxygen

A

c

32
Q

Main constituents of natural rubber is
a. polystyrene
b. polyisoprene
c. polybutadiene
d. Polychloroprene

A

b

33
Q

Highly porous refractory bricks are
a. less susceptible to chemical attack by
molten fluxes and gases etc.
b. very strong.
c. having very high thermal conductivity.
d. none of these.

A

d

34
Q

Fumigant insecticides
a. kill insects, when they eat it.
b. emit poisonous vapour.
c. are absorbed throughout the plant.
d. none of these.

A

b

35
Q

Which of the following is an endothermic
reaction?
a. Absorption of SO3 in 98% H2SO4.
b. C + H2O = CO + H2.
c. Thermal dissociation of iron pyrites.
d. Both (b) and (c).

A

d

36
Q

Fermentator temperature during production of
alcohol from molasses is around __________ °C.
a. 5
b. 30
c. 150
d. 300

A

b

37
Q

Which of the following coals has the highest
calorific value?
a. Lignite
b. Sub-bituminous
c. Anthracite
d. Peat

A

c

38
Q

Which of the following is not an abrasive
material?
a. Bakelite
b. Pumice
c. Corundum
d. Carborundum

A

a

39
Q

Pick out the wrong statement.
a. Hard glass which is used for making
laboratory glass wares is a mixture of
sodium borosilicate and aluminium
borosilicate.

b. Glass is decolorised during its manufac-
ture by adding antimony oxide, mangnese

dioxide or arsenic oxide.
c. Ordinary glass is represented chemically by
Na2O . CaO . 6SiO2.
d. Red color is imparted to glass by addition
of arsenic oxide.

A

d

40
Q

Finely ground calcium aluminate & silicate is
a/an
a. cermet
b. cement
c. abrasive
d. Explosive

A

b

41
Q

Cooking liquor in case of sulphite process is
a. sodium sulphite and sodium bisulphite.
b. magnesium sulphite and free SO2 in acid
medium.
c. magnesium sulphate and magnessium
bicarbonate.
d. none of these.

A

a

42
Q

90% of the caprolactum is converted to nylon-6
on its condensation polymerisation in the reactor
maintained at __________ °C.
a. <0
b. 10-30
c. 250-280
d. 500-600

A

b

43
Q

Vegetable oils contain large quantity of
glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as __________ oil.
a. drying
b. semi-drying
c. non-drying
d. none of these

A

c

44
Q

Fats as compared to oils have
a. more unsaturated glycerides of fatty acids.
b. less unsaturated glycerides of fatty acids.
c. much higher reactivity to oxygen.
d. lower melting point.

A

b

45
Q

Thermal pyrolysis of ethylene dichloride
produces
a. trichloroethylene
b. vinyl chloride
c. ethanol amine
d. ethylene oxide

A

b

46
Q

The main component of pyrex glass is
a. zinc
b. lead
c. boron
d. Celenium

A

b

47
Q

Alum [Al2(SO4)3] is used as a coagulant in
water treatment to remove
a. colour
b. turbidity
c. bacteria
d. all (a), (b) and (c)

A

d

48
Q

__________ is an ore concentrating
metallurgical process involving a chemical change.
a. Electromagnetic separation
b. Froth floatation
c. Roasting
d. none of these

A

c

49
Q

Basic oxide is absent in __________ glass.
a. flint
b. pyrex
c. quartz
d. all (a), (b) & (c)

A

c

50
Q

Graphite is a/an
a. electrical insulator.
b. allotrope of carbon.
c. moderator used in nuclear reactor.
d. both (b) and (c).

A

d

CPI (14 decks)

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