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CPI > section 5 > Flashcards

section 5 Flashcards

1
Q

The noble gas which occurs most abundantly in
the atmosphere is
a. helium
b. neon
c. krypton
d. Argon

A

d

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2
Q

Production of alcohol by fermentation of molasses is an __________ process.
a. anaerobic
b. aerobic
c. endothermic
d. Both (b) and (c)

A

b

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3
Q

Main constituents of portland cement are calcium
aluminate and
a. gypsum
b. silicates
c. sodium silicate
d. Carbonates

A

b

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4
Q

Pick out the wrong statement.
a. High early strength cement are made from materials having high silica to lime ratio.
b. The function of gypsum in cement is to enhance its initial setting rate.
c. Acid resistant cements are known as silicate cement.
d. Major component of greyish portland cement is tricalcium silicate.

A

a

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5
Q

Common salt is generally not produced commonly by __________ method from brine.
a. freeze drying
b. electrolytic
c. solar evaporation
d. vacuum evaporation

A

a

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6
Q

Which of the following is a detergent ?
a. Fatty alcohol
b. Alkyl benzene sulphonate (ABS)
c. Fatty acids
d. Methylene chloride

A

b

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7
Q

Sulphuric acid is mainly used in the __________ industry.
a. fertiliser
b. steel
c. paper
d. Paint

A

a

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8
Q

Pick out the wrong statement pertaining to nitric
acid.

a. About 90% of nitric acid is manufactured by Ostwald’s process.
b. It is a strong mono basic acid which reacts with almost all the metals except noble metals.
c. Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2).
d. Arc process of nitric acid manufacture is economical as compared to Ostwald’s
process.

A

d

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9
Q

Alcohol percentage in molasses may be around
a. 10
b. 40
c. 70
d. 85

A

b

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10
Q

Main use of hydrazine is
a. as a rocket fuel
b. in water treatment
c. as a disinfectant
d. as fire retardant

A

a

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11
Q

Main use of liquid nitrogen is in
a. rocket propulsion.
b. making gun powder.
c. detergent manufacture.
d. refrigerative cooling.

A

d

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12
Q

Comparing sulphate process with sulphite process, we find that __________ in the later.

a. both temperature & pressure in the former is less than that
b. both temperature & pressure in the former is more than that
c. temperature is more in the former whereas pressure is more
d. pressure is more in the former whereas temperature is less

A

b

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13
Q

Which of the following is a disacchride ?
a. Sucrose
b. Glucose
c. Starch
d. Maltose

A

a

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14
Q

Proximate analysis of coal determines its __________ content.
a. moisture, ash, sulphur & volatile matter
b. moisture & volatile matter
c. moisture, sulphur, nitrogen & fixed carbon
d. none of these

A

b

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15
Q

Pick out the exothermic reaction out of the
following:
a. C + H2O = CO + H2
b. CaC2 + H2O = Ca(OH)2 + C2H2
c. MgCO3 = MgO + CO2
d. all (a), (b) and (c)

A

b

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16
Q

__________ is produced using
polycondensation reaction.
a. Polythene
b. Phenol formaldehyde
c. Poly vinyl chloride
d. none of these

A

b

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17
Q

Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid.
a. phthalic anhydride
b. vinyl chloride
c. maleic anhydride
d. Dacron

A

b

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18
Q

In industrial nomenclature, alcohol means
a. butyl alcohol
b. propyl alcohol
c. ethanol
d. methyl alcohol

A

c

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19
Q

Which of the following is the purest form of water out of the following?
a. Underground water
b. Rain water
c. Well water
d. Lake water

A

b

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20
Q

Use of water having dissolved oxygen in boilers promotes
a. corrosion
b. sequestration
c. scale formation
d. none of these

A

a

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21
Q

Unsaturated oils compared to saturated oils have
a. lower melting point & higher reactivity to oxygen.
b. higher melting point & higher reactivity to oxygen.
c. lower melting point & lower reactivity to oxygen.
d. higher melting point & lower reactivity to oxygen.

A

a

22
Q

With increase in temperature, the equilibrium constant at constant pressure (Kp) for oxidation of
sulphur dioxide
a. increases
b. increases linearly
c. decreases
d. decreases linearly

A

c

23
Q

Chemical formula of oleum is
a. H2SO3
b. H2SO4
c. H2S2O7
d. H2SO7

A

c

24
Q

Electrodeposition of metals i.e. electroplating is never done on
a. metals
b. alloys
c. refractories
d. Non-metals

A

c

25
Q

Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.
a. cutting
b. fibrillation
c. hydration
d. strengthening

A

d

26
Q

The biochemical treatment applied to sewage effluents is a process of
a. dehydration
b. reduction
c. oxidation
d. Polymerisation

A

c

27
Q

Ultimate analysis of coal determines its __________ content.
a. carbon, hydrogen, nitrogen & sulphur
b. carbon, ash, sulphur & nitrogen
c. carbon, sulphur, volatile matter & ash
d. carbon, volatile matter, ash & moisture

A

a

28
Q

A cane sugar factory having sugar production rate of 10 tons/day will produce about __________
tons/day of bagasse (after consumption by the
factory for heating etc.).
a. 1
b. 10
c. 25
d. 40

A

b

29
Q

Sucrose content in cane sugar may be around _________ percent.
a. 50
b. 70
c. 80
d. 95

A

d

30
Q

‘Hollander beater’ machine used in the paper manufacturing plant does not accomplish the task of
a. final rolling out of paper.
b. cutting of fibres.
c. hydration of fibres.
d. fibrillation of fibre.

A

d

31
Q

Yellow glycerine is made into white, using
a. activated carbon
b. diatomaceous earth
c. bauxite
d. Bentonite

A

a

32
Q

Very dilute solutions are generally used in fermentation reactions for which the optimum
temperature range is __________ °C.
a. -5 to 0
b. 5 to 10
c. 30 to 50
d. 75 to 80

A

c

33
Q

Brackish water which contains mostly dissolved salt, can be purified by the __________ process.
a. reverse osmosis
b. sand filter
c. lime soda
d. Permutit

A

a

34
Q

Major component of flint glass is
a. lead oxide
b. silica
c. alumina
d. Soda

A

a

35
Q

Gypsum is chemically
a. calcium chloride
b. potassium sulphate
c. sodium sulphate
d. calcium sulphate

A

d

36
Q

Calcination of gypsum produces
a. plaster of paris
b. salt cake
c. nitre cake
d. Lime

A

a

37
Q

Phthalic anhydride is produced by the oxidation of
a. naphthalene
b. benzene
c. toluene
d. Aniline

A

b

38
Q

Superior quality laboratory apparatus is made of the __________ glass having low thermal co-efficient of expansion & high chemical resistance.

a. flint
b. soda
c. pyrex
d. Potash

A

c

39
Q

Zeigler process
a. produces high density polyethylene.
b. produces low density polyethylene.
c. uses no catalyst.
d. employs very high pressure.

A

a

40
Q

Massecuite is
a. used for paper making.
b. used as a cattle feed.
c. highly acidic in nature.
d. none of these.

A

d

41
Q

Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
a. 70
b. 55
c. 80
d. 94

A

d

42
Q

Sodium salt of higher molecular weight fattyacid is termed as the __________ soap.
a. hard
b. soft
c. metallic
d. Lubricating

A

b

43
Q

Synthetic glycerine is produced from
a. toluene
b. phenol
c. propylene
d. Naphthalene

A

c

44
Q

A ‘unit process’ is exemplified by the
a. distillation
b. hydrogenaton of oils
c. absorption
d. Humidification

A

b

45
Q

Commercial scale production of hydrogen from iron-steam reaction represented by,
3Fe + 3H2O =Fe3O4 + 4H2,
is not practised, as it is
a. a slow reaction.
b. a discontinuous reaction (requiring
regeneration of iron by water gas
intermittently).
c. still in development stage (by employing
fluidised bed technique).
d. all (a), (b) and (c).

A

d

46
Q

Viscosity index improver (like polystrene or polyisobutylene) is added to lubricant to
a. reduce its viscosity.
b. increase its viscosity.
c. reduce the variation in its viscosity with temperature.
d. increase the variation in its viscosity with
temperature.

A

c

47
Q

Pick out the wrong statement pertaining to solvent extraction of oil. Rate of extraction

a. decreases with decrease of thickness of the flakes.
b. increases with the increasing flake size keeping the flake thickness constant.
c. increases Considerably with the rise of temperature.
d. decreases as the moisture content of flakes
increases.

A

d

48
Q

Sea weeds are an important source of
a. fluorine
b. chlorine
c. bromine
d. Iodine

A

d

49
Q

Polythene is a/an __________ polymerisation product.
a. addition
b. condensation
c. thermosetting
d. none of these

A

a

50
Q

Catalytic oxidation-dehydrogenation of methyl
alcohol produces
a. formaldehyde
b. phenol
c. acetone
d. maleic anhydride

A

a

CPI (14 decks)

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