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CPI > section 7 > Flashcards

section 7 Flashcards

1
Q

Which of the following contains least amount of
N2?
a. Coke oven gas
b. Blast furnace gas
c. Producer gas
d. Water gas (blue gas).

A

a

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2
Q

Calcination of limestone is not done in a__________ kiln for producing lime.
a. vertical shaft
b. rotary
c. fluidised bed
d. fixed bed

A

d

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3
Q

Neoprene is a
a. monomer
b. synthetic rubber
c. polyester
d. none of these

A

b

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4
Q

Saponification value/number of an oil or fat is a measure of its
a. fatty acid content.
b. degree of unsaturation of the fatty acids
present in it.
c. average molecular weight.
d. insoluble fatty acid content.

A

c

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5
Q

Ethyl alcohol cannot be produced
a. from waste sulphite substrate of papermills.
b. by esterification and hydroloysis of ethylene.
c. from molasses.
d. none of these.

A

d

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6
Q

Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction
temperature is maintained at __________ °C.
a. 15-30
b. 90-100
c. 250-300
d. <0

A

a

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7
Q

Cement mainly contains
a. CaO, SiO2, Al2O3
b. MgO, SiO2, K2O
c. Al2O3, MgO, Fe2O3
d. CaO, MgO, K2O

A

a

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8
Q

Sand and __________ is fused at 1300°C, to produce sodium silicate.
a. limestone
b. soda ash
c. coke

A

b

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9
Q

Coke used for the production of calcium carbide
should have
a. low ash content.
b. low ignition temperature.
c. high electrical resistivity.
d. all (a), (b) and (c).

A

d

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10
Q

Sucrose is a disaccharide consisting of
a. glucose and glucose
b. glucose and fructose
c. glucose and galactose
d. fructose and galactose

A

b

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11
Q

Function of sodium thiosulphate (hypo) in
development of photographic film/plate is to
a. brighten the faint images.
b. remove metallic silver.
c. convert silver chloride to silver.
d. remove unexposed silver halide.

A

d

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12
Q

High temperature carbonisation of coal takes
place at __________ °C.
a. 2000
b. 700
c. 1100
d. < 500

A

c

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13
Q

White phosphorous is stored under water, because
a. it does not react with water.
b. it is poisonous.
c. its kindling temperature in dry air is very low.
d. it is unstable.

A

c

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14
Q

__________ is not a constituent of gun powder.
a. Carbon
b. Charcoal
c. Sulphur
d. Potassium nitrate

A

a

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15
Q

Hydrophilic group of a soap or detergent solution is
a. water hating
b. soil loving
c. water loving
d. none of these

A

c

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16
Q

Rotary kiln is not involved in the production of
a. cement
b. lime from limestone
c. slaked lime from quick lime
d. none of these

A

c

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17
Q

Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is
__________ °C.
a. 25
b. 60-70
c. 150-200
d. 250-300

A

b

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18
Q

Vanillin is a type of
a. anti-pyretic drug
b. food preservative
c. flavour
d. Dye

A

c

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19
Q

Temporary hardness of water can be removed by
a. addition of alum (a coagulant).
b. boiling.
c. filtration (through gravity sand filter).
d. addition of lime.

A

b

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20
Q

More than 100 percent of __________ is present in oleum.
a. SO3
b. H2SO4
c. H2SO3
d. SO2

A

b

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21
Q

Pure rectified spirit contains about __________ percent alcohol.
a. 45
b. 70
c. 95
d. 99.5

A

c

22
Q

Oxygen is separated by distillation from air after
its liquefaction. The boiling point of oxygen is about __________ °C.
a. -83
b. -183
c. -196
d. -218

A

b

23
Q

Titanium dioxide is a/an __________ colour pigment.
a. white
b. black
c. yellow
d. Blue

A

a

24
Q

Mercury cells for caustic soda manufacture,
compared to diaphragm cells
a. require lower initial investment.
b. require more power.
c. produce lower concentration NaOH.
d. none of these.

A

d

25
Q

Cellulose percentage in bamboo fibre is about
a. 10
b. 20
c. 50
d. 85

A

c

26
Q

Essential oils are usually obtained using
a. steam distillation
b. extractive distillation
c. solvent extraction
d. Leaching

A

a

27
Q

Impurities present in brine is normally removed by treatment with
a. NH3 and CO2.
b. lime and soda ash.
c. lime, ammonia and carbon.
d. all (a), (b) and (c).

A

d

28
Q

Hydrogenation of oil/fat does not
a. improve its resistance to rancid oxidation.
b. raise its melting point.
c. remove double bonds.
d. none of these.

A

d

29
Q

Solvay process as compared to dual process (i.e. modified Solvay process)
a. can use low grade brine.
b. has less corrosion problems.
c. involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl.
d. both (b) and (c).

A

d

30
Q

Builders are added in soap to act as
a. cleaning power booster
b. anti-redeposition agent
c. corrosion inhibitor
d. fabric brightener

A

a

31
Q

H2S is scrubbed from refinery gases by absorption using
a. dilute H2SO4
b. ethanol amine
c. chilled water
d. tri-butyl phosphate

A

b

32
Q

Chlorine gas is produced by the electrolysis of
brine (NaCl solution with solid NaCl make up) in
mercury electrolytic cell. Which of the following is
the anodic reaction?
a. Oxidation of Na+ ions
b. Oxidation of Cl- ions
c. Reduction of Na+ ions
d. Reduction of Cl- ions

A

b

33
Q

Zeolite is a/an
a. naturally occurring clay which is capable of
exchanging cations.
b. abrasive material.
c. catalyst used in shift conversion.
d. none of these.

A

a

34
Q

Type of glass used in optical work is the __________ glass.
a. soda-lime
b. fibre
c. lead
d. Borosilicate

A

c

35
Q

Pick out the wrong statement pertaining to the
soap manufacture.
a. Transparent soaps are made by cold
process.
b. Organic pigments are used as colouring
materials in the soap manufacture.
c. Both laundary as well as toilet soaps are
manufactured by hot process.
d. Colourless rosin is used in the manufacture
of laundary soaps.

A

a

36
Q

Ceramics are produced from silicates or clayish
materials: Which of the following is not a ceramic
material?
a. Slag cement
b. Glasses
c. Porcelain/Potteries
d. Teflon

A

d

37
Q

Glass is
a. mainly CaO
b. subjected to galvanising
c. a super cooled liquid
d. all (a), (b) and (c)

A

c

38
Q

Analgesic drugs are
a. pain relievers
b. antibiotics
c. used in the treatment of T.B.
d. used in the treatment of typhiod

A

a

39
Q

Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point
of oxygen is about __________ °C.
a. -53
b. -103
c. -183
d. -196

A

c

40
Q

Commonly used glass is known as the __________ glass.
a. flint
b. hard
c. pyrex
d. soda

A

d

41
Q

Fusion of limestone and __________ produces
high alumina cement.
a. sand
b. bauxite
c. quicklime
d. Calcite

A

b

42
Q

Massacuits is a terminology used in the __________ industry.
a. paint
b. oil hydrogenation
c. soap
d. Sugar

A

d

43
Q

The basic constituent of vegetable oils is
a. triglyceride
b. fatty acids
c. fatty alcohol
d. mono esters

A

a

44
Q

The most economical pulp for the production of
newsprint would be the __________ pulp.
a. groundwood
b. sulphate
c. sulphite
d. Semichemical

A

a

45
Q

Which of the following is the second major
component of cement?
a. Al2O3
b. SiO2
c. CaO
d. Fe2O3

A

b

46
Q

Mercury electrolytic cells are preferred over
diaphragm electrolytic cell (for production of
caustic soda), as it
a. has larger production capacity per unit cell.
b. consumes less power per ton of Cl2
produced.
c. produces high purity (70%) caustic soda
directly.
d. all (a), (b) and (c).

A

d

47
Q

iron & steel in aqueous solutions.
a. Phosphates
b. Chromates
c. Sulphates
d. Bi-carbonates

A

b

48
Q

L.D. converter is used in the production of
a. pig iron
b. steel
c. copper
d. Zinc

A

b

49
Q

The terminology ‘BTX’ used in coal tar distillation industry refers to
a. benzol-toluol-xylol.
b. benzol-toluene-xylene.
c. benzene-toluol-xylol.
d. Benzene-toluene-xylene.

A

d

50
Q

Which of the following is not responsible for
causing permanent hardness of water?
a. Ca(HCO3)2
b. CaCl2
c. MgCl2
d. none of these

A

a

CPI (14 decks)

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