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CPI > section 2 > Flashcards

section 2 Flashcards

1
Q

Calgon used in water treatment is chemically
a. sodium phosphate
b. sodium hexametaphosphate
c. calcium phosphate
d. tricresyl phosphate

A

b

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2
Q

Which oil is preferred for paint manufacture?
a. Drying oil
b. Non-drying oil
c. Semi-drying oil
d. Saturated oil

A

a

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3
Q

Styrene butadiene rubber (SBR) is
a. a natural rubber.
b. a synthetic polymer.
c. a synthetic monomer.
d. another name of silicone rubber.

A

b

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4
Q

Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at
a. 1 atm & 100°C
b. 5 atm & 275°C
c. 100 atm & 500°C
d. 50 atm & 1000°C

A

b

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5
Q

Glycerine is not used in the
a. manufacture of explosive.
b. conditioning and humidification of
tobacco.
c. manufacture of pharmaceuticals.
d. none of these.

A

d

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6
Q

Cumene is the starting material for the production of
a. benzoic acid
b. phenol and acetone
c. isoprene
d. Styrene

A

b

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7
Q

The type of high refractive index glass used in optical instruments is __________ glass.
a. pyrex
b. flint
c. crookes
d. none of these

A

b

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8
Q

Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic
anhydride on commercial scale.
a. nickel
b. vanadium
c. alumina
d. Iron

A

b

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9
Q

Most commonly used rubber vulcanising agent is
a. sulphur
b. bromine
c. platinum
d. Alumina

A

a

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10
Q

Terylene is
a. same as dacron
b. a polyester
c. both (a) & (b)
d. neither (a) nor(b)

A

c

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11
Q

Free alkali in a toilet soap is __________ that in
a laundry shop.
a. less than
b. more than
c. same
d. none of these

A

a

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12
Q

Dehydrogenation of isopropanol produces
a. propyl alcohol
b. acetone
c. trichloroethylene
d. Formaldehyde

A

b

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13
Q

Pick out the wrong statement.

a. Eosin requirement in tallow soap is about 40-50% which fastens the lather formation, softens the hard soaps and increases its cleansing action.
b. Soap powder is prepared by mixing soap
with hydrated sodium carbonate.
c. Detergents differ from soaps in their action
in hard water.
d. Tarnish inhibitor (e.g., benzotriazole) is
added in soap to facilitate the removal of
stains due to tea, blood etc.

A

d

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14
Q

Concentration of hydrogen peroxide is done by
a. crystallisation
b. vacuum crystallisation
c. atmospheric distillation
d. Dehydration

A

b

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15
Q

Helium is produced on commercial scale from
a. air
b. natural gas
c. coke oven gas
d. none of these

A

b

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16
Q

Fermentation of molasses to produce ethyl alcohol is done at __________ °C
a. 20 - 30
b. < - 5
c. 100 - 150
d. 250 - 300

A

a

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17
Q

The catalyst used in the manufacture of DDT is
a. alumina.
b. silica.
c. 20% oleum.
d. aluminium chloride.

A

c

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18
Q
  1. Most widely and commonly used coagulant for the removal of suspended impurities in water is
    a. bleaching powder
    b. slaked lime
    c. alum
    d. copper sulphate
A

c

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19
Q

__________ is used as a catalyst in fat splitting.
a. ZnO
b. Ni
c. V2O5
d. FeO

A

a

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20
Q

Which of the following is not produced on commercial scale from sea water?
a. Bromine.
b. Magnesium compounds.
c. Potassium compounds.
d. Sodium sulphate.

A

d

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21
Q

Heating of __________ to 120°C, produces plaster of paris.
a. blue vitriol
b. gypsum
c. calcium silicate
d. calcium sulphate

A

b

22
Q

Pick out the wrong statement.
a. Conversion of SO2 to SO3 in Monsanto-4 pass converter is about 98%.
b. The chemical formula of oleum is H2S2O7,which is formed by saturating sulphuric acid with sulphur trioxide.
c. Vitriol oil is nothing but technical sulphuric acid.
d. Decomposition of sulphuric acid on heating
does not start before its boiling.

A

d

23
Q

Which of the following has sodium bicarbonate as its main constituent?
a. Baking soda
b. Baking powder
c. Washing soda
d. none of these

A

b

24
Q

Ordinary glass is not a/an
a. amorphous isotropic material.
b. supercooled liquid.
c. material with sharp definite melting point.
d. electrical insulator.

A

c

25
Q

In premitive days, __________ was being manufactured by Leblanc Process.
a. alum
b. washing soda
c. soda ash
d. calcium carbide

A

c

26
Q

The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at
a. SASOL (in South Africa).
b. Redcar (U.K.).
c. Los-Angles (U.S.A.).
d. Trombay (India).

A

a

27
Q

Lurgi coal gasifier is a pressurised __________ bed reactor.
a. moving
b. fixed
c. fluidised
d. Entrained

A

a

28
Q

Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils
a. cause cholesterol build up and blood clotting.
b. are prone to rancid oxidation.
c. always contain some amount of nickel (as their complete removal is very difficult).
d. have affinity to retain harmful sulphur
compounds.

A

a

29
Q

Paper grade bamboo contains about
__________ percent cellulose.
a. 5
b. 20
c. 40
d. 60

A

a

30
Q

Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
a. surfactant
b. builder
c. optical brightening agent
d. anti soil redeposition agent

A

d

31
Q

Vulcanisation of rubber
a. decreases its tensile strength.
b. increases its ozone & oxygen reactivity.
c. increases its oil & solvent resistance.
d. converts its plasticity into elasticity.

A

d

32
Q

Raw materials for ‘Solvay Process’ for
manufacture of the soda ash are
a. salt, limestone and coke or gas.
b. ammonia, salt and limestone.
c. ammonia limestone and coke.
d. none of these.

A

a

33
Q

Chloral is used in the manufacture of
a. DDT
b. BHC
c. parathion
d. none of these

A

a

34
Q

Bromine is used in the preparation of
a. fire extinguishing compounds.
b. fireproofing agents.
c. dyes and antiknock compounds.
d. all (a), (b) and (c)

A

d

35
Q

Sudden temperature fluctuation does not affect pyrex glass, because of its
a. low co-efficient of expansion.
b. high co-efficient of expansion.
c. high melting point.
d. both (b) and (c).

A

a

36
Q

The process used for the manufacture of ethyl
alcohol from molasses is
a. distillation
b. dehydration
c. dehydrogenation
d. none of these

A

d

37
Q

Most easily and cheaply available fibrous raw
material for paper manufacture available in India is
bamboo. The yield of pulp produced from fibrous
raw material by mechanical process is about
__________ percent.
a. 75
b. < 10
c. > 30
d. 50

A

b

38
Q

Absorption of SO3 in 97% H2SO4 is
a. exothermic
b. endothermic
c. not possible
d. none of these

A

a

39
Q

__________ process is used for the commercial
production of nitric acid by the catalytic oxidation
of ammonia.
a. Solvay
b. Ostwald’s
c. Haber’s
d. none of these

A

b

40
Q

Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the
a. fertiliser manufacture
b. car battery solution
c. synthesis of oleum
d. water treatment

A

b

41
Q

The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is
a. alumina
b. silica gel
c. platinum
d. Nickel

A

a

42
Q

A good quality coal should have
a. low fusion point of ash
b. high ash content
c. high sulphur content
d. none of these

A

d

43
Q

Zeolite used in water softening process (cation exchange) is regenerated by washing with
a. brine
b. chloramines
c. sodium bisulphite
d. liquid chlorines

A

a

44
Q

The catalyst used in shift converter is
a. nickel
b. vanadium
c. silica gel
d. Alumina

A

a

45
Q

Which of the following is a detergent?
a. Benzene hexachloride
b. Alkyl benzene sulphonate
c. Polytetraflouroethylene
d. Cellulose nitrate

A

b

46
Q

Drinking (potable) water treatment does not involve
a. coagulation
b. sedimentation
c. softening
d. Disinfection

A

c

47
Q

Phenol formaldehyde resin is used as an adhesive in making
a. laminates
b. card boxes
c. furniture
d. Books

A

a

48
Q

Pick out the correct statement.

a. A fat is converted into oil by its
hydrogenation.
b. There is no difference between a fat and an oil so far as its physical properties are concerned.
c. All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon atoms.
d. Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content.

A

c

49
Q

DDT should not be allowed to come in contact with iron (during its manufacture) to
a. avoid its decomposition.
b. prevent sulphonation of the
monochlorobenzene by the acid catalyst.
c. achieve non-hygroscopic property.
d. none of these.

A

a

50
Q

Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively
a. V2O5 & Cr2O3.
b. oxides of nitrogen & Cr2O3.
c. V2O5 on a porous carrier & oxides of nitrogen.
d. oxides of nitrogen & V2O5 on a porous
carrier.

A

d

CPI (14 decks)

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