Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CPI > section 9 > Flashcards

section 9 Flashcards

1
Q

Pick out the wrong statement.
a. Pasteurisation of milk involves moderate
heating followed by cooling.
b. Bakeries and breweries make use of yeasts.
c. Enzyme is a complex nitrogenous
compound.
d. Oils and fats are alkaloids.

A

d

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which of the following, when pyrolysed,
produces perchloro-ethylene?
a. Ethylene dichloride
b. Chlorobenzene
c. Carbon tetrachloride
d. Chlorinated paraffin

A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Chemical name of aspirin (an analgesic drug) is
a. acetylsalicylic acid
b. nictonic acid
c. calcium acetate
d. methyl salicylate

A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which is the most efficient absorbent for SO3 out
of the following?
a. 20% oleum
b. 65% oleum
c. 78%H2SO4
d. 98%H2SO4

A

d

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Coal tar is used as a
a. binding material for coal briquettes.
b. fuel in rotary kiln.
c. binder in making carbon electrodes.
d. all (a), (b) and (c).

A

d

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Caprolactum (a raw material for nylon-6
manufacture) is produced from
a. phenol
b. naphthalene
c. benzene
d. Pyridine

A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The purpose of adding Na2CO3 to water of low
alkalinity is to
a. permit the use of alum as a coagulant.
b. increase the softening capacity of zeolite.
c. facilitate easy regeneration of zeolite.
d. all (a), (b) and (c).

A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Ca(OH)2 is called
a. quicklime
b. slaked lime
c. limestone
d. Gypsum

A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Percentage of uranium in carnotite ore found in
Jadugoda (Jharkhand) is about
a. 0.1 to 0.5
b. 1 to 5
c. 5 to 10
d. 15 to 25

A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Potassium is kept & transported under
a. water
b. liquid ammonia
c. kerosene oil
d. Alcohol

A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The metallic aluminium is obtained from pure
alumina in the presence of fused cryolite by
a. electrolysis
b. electrolytic reduction
c. electrolytic oxidation
d. none of these

A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Bakelite is chemically known as
a. polyvinyl chloride (PVC)
b. polybutadiene
c. phenol formaldehyde
d. Polyurathane

A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which of the following is a co-product during
the manufacture of caustic soda by electrolysis of
brine?
a. Na2CO3
b. NaHCO3
c. H2
d. none of these

A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Phthalic anhydride is made by the
a. oxidation of naphthalene.
b. oxidation of benzene.
c. dehydrogenation of ethyl benzene.
d. none of these.

A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

RDX (an explosive), which is more sensitive but
less toxic than TNT, is chemically
a. cyclo trimethylene trinitramine.
b. trinitro resorcinol.
c. cyclo tetramethylene tetranitramine.
d. trinitro benzene.

A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Raw material used in alcohol distilleries in India
is
a. molasses
b. benzol
c. methylated spirit
d. none of these

A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Oil produced by solvent extraction
a. has low free fatty acid content.
b. is odourless.
c. both (a) &(b).
d. neither (a) nor (b).

A

d

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

High acid value of an oil or fat is an indication
of
a. storage under improper conditions.
b. absence of unsaturation.
c. its smaller molecular weight.
d. none of these.

A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Yeast is used in the manufacture of
a. pencillin
b. antibiotics
c. wine
d. pasteurised milk

A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q
  1. Liquefaction of gases can not be done by
    a. exchange of heat with colder stream.
    b. adiabatic expansion through a throttle valve
    (Joule-Thomson expansion).
    c. merely compressing it beyond critical
    pressure.
    d. adiabatic expansion against a piston or in a
    turbine.
A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Anion exchanger is regenerated usually with
a. NaOH
b. H2SO4
c. hydrazine
d. alum solution

A

a

22
Q

__________ is the major constituent of the
Portland cement.
a. Calcium carbonate
b. Calcium oxide
c. Tricalcium silicate
d. Calcium sulphate

A

c

23
Q

Catalytic oxidation of naphthalene produces
a. styrene
b. phenol
c. phthalic anhydride
d. none of these

A

c

24
Q

Parathion and Malathion are
a. pesticides.
b. plasticisers for unsaturated polysters.
c. pain-relieving drugs (analgesic).
d. Tranquilisers.

A

a

25
Q

Transparent soaps (e.g. Pears) are
a. usually soft soap (made from coconut oil)
in which cane sugar & alcohol are added
and finally washed with methylated spirit to
achieve transparency.
b. metallic soaps with frothing agent and free
stearic acid to achieve transparency.
c. metallic soaps with frothing agent from
which glycerine has not been recovered.
d. none of these.

A

a

26
Q

Dehydrogenation of ethyl benzene produces
a. styrene
b. naphthalene
c. phenol
d. benzoic acid

A

a

27
Q

Reaction of ethylene glycol and dimethyl
terephthalate (DMT) produces
a. nylon-6
b. dacron
c. polyester
d. PVC

A

b

28
Q

Lindane is
a. not a fumigant.
b. BHC (Benzene Hexa Chloride) containing
99% γ-isomer.
c. a by-product of BHC manufacture.
d. both(b) and (c).

A

b

29
Q

Solvay process is not used for the manufacture
of potassium carbonate, because of the reason that
potassium bicarbonate
a. is prone to thermal decomposition.
b. has high water solubility and is unstable.
c. is soluble in ammonium chloride and
potassium chloride solution.
d. all (a), (b) and (c).

A

c

30
Q

Which of the following is a bleaching agent
added in the detergents to facilitate removal of
stains caused due to blood, tea etc?
a. Sodium silicate
b. Sodium borate
c. Sodium tripolyphosphate (STPP)
d. Caustic soda

A

b

31
Q

In the production of soda ash by Solvay process,
the by-product is
a. CaCl2
b. NH4Cl
c. NH3
d. NaOH

A

a

32
Q

The ideal pulp for the manufacture of paper
should have high __________ content.
a. cellulose
b. lignin
c. both (a) & (b)
d. none of these

A

a

33
Q

At very high concentration of enzymes, the rate
of fermentation chemical reaction is __________
the concentration of reactants.
a. independent of
b. directly proportional to
c. inversely proportional to
d. proportional to the square of

A

a

34
Q

Which of the following is a constituent of
vinegar?
a. Around 10% alcohol
b. Around 1% acetic acid
c. Both (a) and (b)
d. Neither (a) nor (b)

A

c

35
Q

During the manufacture of sulphuric acid, the
temperature of molten sulphur is not increased
beyond 160°C, as
a. it is very corrosive at elevated temperature.
b. its viscosity is not reduced on further
heating (hence pressure drop on pumping
it, cannot be further reduced).
c. it decomposes on further increasing the
temperature.
d. none of these.

A

b

36
Q

Kopper-Totzek coal gasifier
a. can give ammonia synthesis gas (H2 + N2).
b. is a moving bed reactor.
c. cannot use coking coal.
d. operate at very high pressure.

A

a

37
Q

Addition of calcium oxide to water produces
a. exothermic heat
b. hissing sound
c. slaked lime
d. all (a), (b) & (c)

A

d

38
Q

Sodium bisulphite is used for __________
water.
a. deaeration
b. dechlorination
c. both (a) & (b)
d. neither (a) nor(b)

A

c

39
Q

Riboflavin is a/an
a. vitamin
b. analgesic drug
c. anaesthetics

A

a

40
Q

Flash point of most vegetable oils is about
__________ °C.
a. 50
b. 100
c. 200
d. 300

A

c

41
Q

Presence of sodium tripolyphosphate (an
additive) in synthetic detergent
a. facilitates its use even in hard water (by
sequestering the water-hardening Ca & Mg
ions).
b. inhibits its corrosive effects.
c. does not allow redeposition of dirt on the
cleaned surface.
d. none of these.

A

a

42
Q

Dense soda ash used in the manufacture of
glass, is chemically represented by
a. Na2CO3
b. Na2CO3.10H2O
c. Na2CO3.H2O
d. Na2HCO3

A

c

43
Q

reverse osmosis is normally used for the
a. separation of isotopes of uranium from
gaseous uranium hexaflouride.
b. separation of helium from natural gas.
c. desalination of brackish water to produce
potable (drinking) water.
d. purification of oxygen.

A

c

44
Q

Hydrazine is largely used
a. as a starting material for ‘hypo’.
b. in photographic industry.
c. as rocket fuel.
d. in printing industry.

A

c

45
Q

‘Synthesis gas’ meant for the synthesis of
organic compound is a variable mixture of
a. N2 & H2
b. CO2 & H2
c. CO & H2
d. C & H2

A

c

46
Q

Litharge is
a. lead oxide
b. zinc oxide
c. zinc sulphide
d. cellulosic photographic material

A

a

47
Q

Coagulant is used __________ filtration.
a. before
b. after
c. during
d. to avoid

A

a

48
Q

10% oleum comprises of 10% free
a. SO2
b. H2SO3
c. SO3
d. H2SO4

A

c

49
Q

Use of chlorine in the treatment of sewage
a. helps in grease separation.
b. increases the biological oxygen
demand(BOD).
c. causes bulking of activated sludge.
d. aids in flocculation.

A

a

50
Q

Removal of dirt/soil by soaps or detergent does
not involve the __________ of soil.
a. emulsification
b. dispersion
c. precipitation
d. Wetting

A

c

CPI (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions