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CPI > section 11 > Flashcards

section 11 Flashcards

1
Q

Lithopaneis
a. explosive
b. white lead
c. filter aid
d. ZnS (white pigment)

A

d

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2
Q

What products do we get on electrolysis of
saturated brine using steel cathode and graphite
anode in an electrolytic cell?
a. Cl2 & Na
b. Cl2 & H2
c. O2 & H2
d. Cl2, H2 & NaOH solution.

A

d

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3
Q

__________ acid is the main constituent of
cotton seed oil.
a. Acetic
b. Linoleic
c. Palmitic
d. Oleic

A

b

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4
Q

Chemical formula of ‘salt cake’ is
a. Na2SO4
b. CaSO4
c. MgSO4
d. BaSO4

A

a

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5
Q

Temperature during hydrogenation of oil should
not be more than 200°C, otherwise it will result in
a. pyrolysis of oil.
b. sintering of porous catalyst.
c. hydrogen embrittlement.
d. all (a), (b) and (c).

A

d

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6
Q

Nicotine is
a. a volatile alkaloid.
b. obtained by treating by-products of the
tobacco processing industry.
c. both (a) and (b).
d. neither (a) nor (b).

A

c

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7
Q

Separation of fresh water from sea water can be
done by the __________ operation.
a. osmosis
b. reverse osmosis
c. absorption
d. Adsorption

A

b

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8
Q

Na2CO3.10H2O is called
a. washing soda
b. soda ash
c. slaked lime
d. Quicklime

A

a

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9
Q

Reaction of an alcohol with organic acid is called
the __________ reaction.
a. saponification
b. esterification
c. neutralisation
d. Acidification

A

b

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10
Q

Ethanol amine is produced using ammonia and
a. ethyl benzene
b. ethylene oxide
c. ethanol
d. ethane

A

b

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11
Q

__________ acid is an unsaturated fatty acid.
a. Palmitic
b. Oleic
c. Stearic
d. Oxalic

A

b

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12
Q

CO & H2 are the constituents of
a. producer gas
b. water gas
c. coke oven gas
d. all (a), (b) and (c)

A

d

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13
Q

Economics of ‘Solvay Process’ depends upon
the efficiency of
a. carbonating tower
b. ammonia recovery
c. ammonia recovery and size of the plant
d. ammoniation of salt solution

A

c

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14
Q

__________ is a thermosetting plastic.
a. Polyvinyl chloride
b. Polythene
c. Bakelite
d. Teflon

A

c

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15
Q

Na2CO3 is called
a. washing soda
b. soda ash
c. plaster of paris
d. Calcite

A

b

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16
Q

Flux addition during smelting of ore is done to
a. remove impurities/gangue.
b. enhance rate of reaction.
c. accelerate reduction of ore.
d. separate slag from metal.

A

a

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17
Q

Hydrazine is used in water treatment for the
removal of
a. colloidal impurities
b. dissolved oxygen
c. turbidity
d. chlorinous taste

A

b

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18
Q

Direct conversion of chemical energy into
electrical energy is done in a
a. magnetohydrodynamic (MHD) generator.
b. fuel cell.
c. fast breeder reactor.
d. none of these.

A

b

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19
Q

Which of the following is not produced
commercially from sea water?
a. Magnesium & potassium compounds
b. Common salt
c. Bromine
d. Iodine

A

d

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20
Q

Pick out the wrong statement.
a. Dry process is used for the manufacture of
cement when the raw material is blast
furnace slag.
b. Portland cement is made employing wet
process.
c. Gypsum is added to Portland cement to
lengthen its setting time.
d. none of these.

A

d

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21
Q

Nylon-6 as compared to Nylon-66 is having
higher
a. hardness
b. abrasion/resistance
c. melting point
d. none of these

A

d

22
Q

Digestion of wood-base materials (for
manufacture of pulp) is done to
a. remove lignin.
b. produce long fibres.
c. prevent deterioration on storage.
d. none of these.

A

a

23
Q

Soap cannot be used with hard water, because
a. hard water contains sulphate.
b. they form insoluble calcium soaps which
precipitate.
c. they attract back the removed dirt.
d. none of these.

A

b

24
Q

Which of the following is not an antibiotic?
a. Penicillin
b. Streptomycin
c. Tetracyclin
d. Quinine

A

d

25
Q

The most reactive allotropic form of phosphorus
is __________ phosphorus.
a. red
b. yellow
c. violet
d. Black

A

b

26
Q

Plasticisers are added to synthetic plastics to
impart flexibility.
a. improve workability during fabrication.
b. develop new improved properties not
present in the original resins.
c. all (a), (b) and (c).

A

c

27
Q

Rosin soap is added during paper manufacture
to
a. impart adhesive properties.
b. improve opacity.
c. impart resistance to penetration by liquids.
d. none of these.

A

c

28
Q

Hydrogen gas is not produced commercially
(for nitrogeneous fertiliser manufacture) by
a. iron-steam reaction.
b. electrolysis of water.
c. steam reforming of naphtha.
d. its cryogenic separation from coke oven
gas.

A

a

29
Q

Carboxymethyl cellulose (CMC) is added in
detergents to
a. prevent redeposition of soil on cleaned
surface.
b. act as optical brightening agent.
c. inhibit corrosion in washing machines
made of aluminium,
d. none of these.

A

a

30
Q

Synthesis gas is a mixture of
a. CO and H2
b. N2 and H2
c. H2, CH4 and CO
d. CO2 and H2

A

a

31
Q

Which of the following impurities in feed water
for high pressure boiler is the most detrimental?
a. Silica
b. Dissolved oxygen
c. Suspended salt
d. Dissolved salt

A

a

32
Q

Which glass is usually used in optical work?
a. Lead glass
b. High silica (borosilicate) glass
c. Photo-sensitive glass
d. Fibre glass

A

a

33
Q

Fourdrinier machine is used in the manufacture
of
a. sugar
b. paper
c. alcohol from molasses
d. phenol formaldehyde

A

b

34
Q

The most popular and common detergent i.e.,
alkyl benzene sulfonate (ABS) is a/an __________
detergent.
a. cationic
b. anionic
c. amphoteric
d. semi polar

A

b

35
Q

Reaction of calcium carbide with water produces
a gas, which is used
a. as an illuminant.
b. for metal cutting/welding.
c. both (a) & (b).
d. neither (a) nor (b).

A

c

36
Q

Salt is the basic raw material for the
manufacture of
a. cement
b. glass
c. potteries
d. caustic soda

A

d

37
Q

Pick out the wrong statement.
a. Low intensity explosives are also called
propellants, whereas high intensity
explosive are called detonators.
b. Gun powder comprises of 75% salt petre,
15% charcoal and 10% sulphur.
c. Lead azide is a popular military explosive.
d. TNT is a hygroscopic explosive having
very high melting point and is non-toxic to
human being.

A

d

38
Q

Hydrazine (N2H4) is used mainly as a/an
a. explosive
b. rocket fuel
c. detergents additive
d. none of these

A

b

39
Q

Hydrocynic acid (HCN) is used as an insecticide
for
a. controlling timber degradation by ants
b. controlling poultry lice
c. potato beetle
d. citrus fruits

A

d

40
Q

Molecular weight of plastics ranges from
a. 5000 to 10000
b. 20000 to 250000
c. 500 to 5000
d. 106 to l09

A

b

41
Q

Acrylonitrile is mainly used in the __________
industry.
a. polymer
b. printing
c. dyeing
d. Photographic

A

c

42
Q

The enzyme which converts starch into the
disacharides maltose is
a. diastase
b. maltase
c. yeast
d. none of these

A

a

43
Q

Pick out the false statement pertaining to water treatment.
a. Aeration of water is effective in CO2
removal.
b. The zeolite water softening process reduces
the hardness of water by not more than
50%.
c. Sodium sulphate or sodium carbonate do
not cause hardness in water.
d. Water with pH value less than 7, is acidic.

A

b

44
Q

Presence of H2S in raw water (to be chlorinated)
results in the
a. reduced softening capacity of zeolite.
b. increased dosage of chlorine to provide a
disinfecting residual in the water.
c. easy removal of its hardness.
d. none of these.

A

b

45
Q

Contact process of sulphuric acid manufacture
a. yields acid of higher concentration than
chamber process.
b. yields acids of lower concentration than
chamber process.
c. is obsolete.
d. eliminates absorber.

A

a

46
Q

Fat dispersed in water is exemplified by
a. colloids
b. gel
c. butter
d. Emulsion

A

c

47
Q

Maleic anhydride is produced by catalytic
oxidation of
a. toluene
b. ethyl alcohol
c. naphthalene
d. Benzene

A

d

48
Q

Catalyst used in the oxidation of benzene to
produce maleic anhydride is
a. V2O5
b. Pt
c. Ni
d. Cr

A

a

49
Q

Widely used method for the conditioning of
boiler feed water is the
a. cold lime process
b. coagulation
c. hot-lime soda process
d. Sequestration

A

c

50
Q

Blue colour is imparted to glass by the addition
of
a. FeSO4
b. PbO
c. CaO
d. NaOH

A

c

CPI (14 decks)

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