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CPI > section 3 > Flashcards

section 3 Flashcards

1
Q

DDT stands for
a. diethyl-diphenyl-trichloromethane.
b. dichloro-diphenyl-trichloromethane.
c. diphenyl-dichloro-trichloromethane.
d. Dichloro-diphenyl-trichloroethane.

A

d

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2
Q

Phosphoric acid is prepared from
a. cryolite
b. chalcopyrite
c. rock phosphate
d. none of these

A

c

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3
Q

Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used
a. as a lubricant.
b. as a rust preventive.
c. in hard water for cleaning of cloth.
d. as a foam depressant in distillation column

A

a

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4
Q

Which of the following processes does not produce Cl2 as a co-product during the manufacture
of caustic soda ?
a. Diaphragm electrolytic cell process
b. Mercury electrolytic cell process
c. Lime-soda process
d. None of these

A

c

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5
Q

Bleaching action of bleaching powder is due to its __________ properties.
a. reducing
b. oxidising
c. disinfecting
d. none of these

A

b

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6
Q

Solvent extracted oil
a. has low free fatty acid content.
b. is odourless.
c. has more of unsaturates.
d. none of these.

A

d

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7
Q

Which of the following is not required in the manufacture of soda ash by Solvay process ?
a. Ammonia
b. Limestone
c. Nitric acid
d. None of these

A

c

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8
Q

Saponification number of an oil or fat
a. gives an idea about its molecular weight.
b. is inversely proportional to its molecular
weight.
c. detects its adulteration.
d. all (a), (b) & (c).

A

d

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9
Q

The purpose of tanning in leather industry is to
a. stiffen the leather.
b. smoothen the leather.
c. make it flexible.
d. impart water resistance.

A

a

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10
Q

Lime and soda ash are added to water to remove
a. bicarbonates & sulphates of calcium and
magnesium.
b. undersirable taste and odour.
c. bacteria.
d. its corrosiveness.

A

a

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11
Q

Kaoline is a/an
a. refractory material
b. synthetic resin
c. artificial abrasive
d. blue pigment

A

a

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12
Q

Hydrogenation of edible vegetable oils
a. is an exothermic reaction.
b. increases their melting point.
c. is done in presence of nickel catalyst.
d. all (a), (b) and (c).

A

d

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13
Q

Phenol is mainly used
a. to produce benzene.
b. to produce phenol formaldehyde.
c. to produce polyester resin.
d. as a plasticiser for unsaturated polyster.

A

b

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14
Q

Main constituent of dolomite is
a. CaCO3
b. MgCO3
c. K2CO3
d. Na2CO3

A

b

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15
Q

Conversion of CO to CO2 by steam in presence of a catalyst is called
a. steam reforming.
b. shift conversion.
c. steam gasification.
d. none of these.

A

d

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16
Q

Refractory bricks having high thermal
conductivity is desirable, when it is to be used in the
a. L.D. converter
b. blast furnace
c. rotary kiln
d. Recuperator

A

d

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17
Q

Bromides contained in hot mother liquor is treated with __________ during manufacture of bromine from sea water.
a. SO3
b. Cl2
c. NH3
d. SO2

A

b

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18
Q

Plasticisers are added to paints to
a. make it corrosion resistant.
b. make glossy surface.
c. give elasticity & prevent cracking of the film.
d. increase atmospheric oxidation.

A

c

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19
Q

Resistance to fusion of the refractory under a steady rising temperature condition is called
a. spalling
b. refractoriness
c. both (a) & (b)
d. neither (a) nor (b)

A

b

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20
Q

Portland cement consists mainly of
a. CaO & SiO2
b. SiO2 & Al2O3
c. CaO & Al2O3
d. CaO & Fe2O3

A

a

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21
Q

__________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.
a. Pyrex
b. Soda lime
c. Lead
d. High silica

A

a

22
Q

The amount of benzene present in pure benzol is about __________ percent.
a. 30
b. 50
c. 70
d. 90

A

c

23
Q

Cumene (isopropyl benzene) is made by oxidation of napthalene.
a. propylene alkylation of benzene.
b. polymerisation of a mixture of benzene &
propylene.
c. none of these.

A

a

24
Q

Which of the following is not a pyrite ore?
a. Celestite
b. Galena
c. Gypsum
d. Siderite

A

d

25
Q

Mannheim furnace is used in the manufacture of
a. hydrochloric acid.
b. H2SO4 by Chamber process.
c. calcium carbide.
d. Corundum.

A

a

26
Q

Thermosetting materials
a. are cross-linked molecules.
b. soften on application of heat.
c. are solvent soluble.
d. none of these.

A

a

27
Q

Pick out the wrong statement. Iodine value of an oil or fat is
a. the number of grams of iodine taken up by 100 gm of oil or fat.
b. a measure of its unsaturation.
c. helpful in findings its adulteration & its suitability for making soap.
d. independent of the type of oil, whether it is drying or non-drying.

A

d

28
Q

Nickel is not used as a catalyst in the
a. Fischer-Tropsch process.
b. shift conversion.
c. hydrogenation of oil.
d. Ostwald’s process of HNO3 manufacture.

A

d

29
Q

__________ iron is the purest form of iron.
a. Cast
b. Wrought
c. Pig
d. High silicon

A

b

30
Q

Enamels
a. give good glossy finish.
b. are same as varnish.
c. are prepared from non-drying oil.
d. do not contain pigment.

A

a

31
Q

Black liquor is converted into white liquor by
a. evaporation and burning the concentrate
followed by causticisation of products.
b. multi-effect evaporation only.
c. selective liquid extraction.
d. extractive distillation.

A

a

32
Q

Varnish does not contain
a. thinner
b. pigment
c. both (a) & (b)
d. neither (a) nor (b)

A

b

33
Q

Alcohol is produced by the
a. oxidation of an aldehyde
b. hydrolysis of an ether
c. esterification of a fat
d. none of these

A

b

34
Q

34.Varnish does not contain
a. pigment
b. thinner
c. dryer
d. anti-skimming agent

A

a

35
Q

Polymerisation product of C2F4 (carbon tetraflouride) is called P.T.F.E (poly chloro tetra flouro ethylene). It is also called
a. polyurethane
b. silicone
c. teflon
d. epoxy resin

A

c

36
Q

Solvent used for extraction of oil is
a. hexane
b. methyl ethyl ketone
c. furfurol
d. none of these

A

d

37
Q

Insulin is an __________ drug.
a. anti-malarial
b. anti-TB
c. antibiotic
d. none of these

A

d

38
Q

Liquor poisoning generally occurs due to the presence of __________ in it.
a. ethyl alcohol
b. impurities
c. methyl alcohol
d. carbonic acid

A

c

39
Q

Neoprene is chemically known as
a. polybutadiene
b. styrene butadiene rubber (SBR)
c. polyurathane
d. Polychloroprene

A

d

40
Q

Pick out the wrong statement.
a. Chamber process of sulphuric acid
manufacture produces pure acid of
concentration < 80%.
b. Contact process of sulphuric acid
manufacture produces pure acid of
concentration ≥ 98%.
c. 75% oleum can be produced by distillation of 20% oleum.
d. Contact process of sulphuric acid
manufacture uses nickel as the catalyst.

A

d

41
Q

Pick out the wrong statement.
a. Catalytic hydrogenation of carbon
monoxide produces methyl alcohol.
b. In nylon-6, the number 6 represents the total number of carbon atoms in the ring.
c. Raw materials for DDT manufacture are benzene and chlorine.
d. Ethanolamines are produced by using ammonia and ethylene oxide as raw material.

A

c

42
Q

Molecular weights of polymers are in the range of
a. 10^2 - 10^2
b. 10^5 - 10^9
c. 10^2 - 10^7
d. 10^9 - 10^11

A

c

43
Q

Sulphur removal by heating of pyrite ore in presence of air is called its
a. reduction
b. roasting
c. calcination
d. Smelting

A

b

44
Q

Deacon’s method is used for the manufacture of
a. glauber’s salt
b. common salt
c. chlorine
d. graphite electrode

A

c

45
Q

Pick out the true statement pertaining to water treatment.
a. Slow sand filters can remove colour completely.
b. Activated carbon can be used for taste & odour control without subsequent filtration.
c. Application of activated carbon reduces the temporary hardness of water.
d. Normally, the turbidity is removed by adding a coagulent prior to sedimentation.

A

d

46
Q

Laboratory glass wares which reacts with hydroflouric acid, are made of the __________ glass.
a. lead
b. borosilicate
c. soda lime
d. alkali silicate

A

b

47
Q

Laboratory glass wares which reacts with hydroflouric acid, are made of the __________ glass.
a. lead
b. borosilicate
c. soda lime
d. alkali silicate

A

c

48
Q

Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of
a. nitric acid
b. hydrochloric acid
c. methyl alcohol
d. formic acid

A

a

49
Q

The most stable allotropic form of phosphorous
is the __________ phosphorous.
a. white
b. black
c. yellow
d. red

A

b

50
Q

Function of thinner in a paint is to
a. accelerate the oxidation of oil.
b. prevent gelling of the paint.
c. suspend pigments & dissolve film forming
materials.
d. form a protective film.

A

c

CPI (14 decks)

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