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Chemical Engineering Reviewer > Process Industries (Set 2) > Flashcards

Process Industries (Set 2) Flashcards

A survey of different chemical process industries, focusing on raw materials, processes, and products.

1
Q

Lithopaneis

A

ZnS (white pigment)

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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

Cl

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3
Q

____ acid is the main constituent of cotton seed oil.

A

Linoleic

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4
Q

Chemical formula of ‘salt cake’ is

A

Na

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5
Q

Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in

A

all (a), (b) and (c).

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6
Q

Nicotine is

A

both (a) and (b).

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7
Q

Separation of fresh water from sea water can be done by the ____ operation.

A

reverse osmosis

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8
Q

Na

A

washing soda

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9
Q

Reaction of an alcohol with organic acid is called the ____ reaction.

A

esterification

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10
Q

Ethanol amine is produced using ammonia and

A

ethylene oxide

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11
Q

____ acid is an unsaturated fatty acid.

A

Oleic

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12
Q

CO & H

A

all (a), (b) and (c)

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13
Q

Economics of ‘Solvay Process’ depends upon the efficiency of

A

ammonia recovery and size of the plant

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14
Q

____ is a thermosetting plastic.

A

Bakelite

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15
Q

Na

A

soda ash

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16
Q

Flux addition during smelting of ore is done to

A

remove impurities/gangue.

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17
Q

Hydrazine is used in water treatment for the removal of

A

dissolved oxygen

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18
Q

Direct conversion of chemical energy into electrical energy is done in a

A

fuel cell.

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19
Q

Which of the following is not produced commercially from sea water ?

A

Iodine

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20
Q

Pick out the wrong statement.

A

none of these.

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21
Q

Nylon-6 as compared to Nylon-66 is having higher

A

none of these

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22
Q

Digestion of wood-base materials (for manufacture of pulp) is done to

A

remove lignin.

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23
Q

Soap cannot be used with hard water, because

A

they form insoluble calcium soaps which precipitate.

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24
Q

Which of the following is not an antibiotic ?

A

Quinine

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25
Q

The most reactive allotropic form of phosphorus is ____ phosphorus.

A

yellow

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26
Q

Plasticisers are added to synthetic plastics to

A

all (a), (b) and (c).

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27
Q

Rosin soap is added during paper manufacture to

A

impart resistance to penetration by liquids.

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28
Q

Hydrogen gas is not produced commercially (for nitrogeneous fertiliser manufacture) by

A

iron-steam reaction.

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29
Q

Carboxymethyl cellulose (CMC) is added in detergents to

A

prevent redeposition of soil on cleaned surface.

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30
Q

Synthesis gas is a mixture of

A

CO and H

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31
Q

Which of the following impurities in feed water for high pressure boiler is the most detrimental ?

A

Silica

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32
Q

Which glass is usually used in optical work?

A

Lead glass

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33
Q

Fourdrinier machine is used in the manufacture of

A

paper

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34
Q

The most popular and common detergent i.e., alkyl benzene sulfonate (ABS) is a/an ____ detergent.

A

anionic

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35
Q

Reaction of calcium carbide with water produces a gas, which is used

A

both (a) & (b).

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36
Q

Salt is the basic raw material for the manufacture of

A

caustic soda

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37
Q

Pick out the wrong statement.

A

TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being.

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38
Q

Hydrazine (N

A

rocket fuel

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39
Q

Hydrocynic acid (HCN) is used as an insecticide for

A

citrus fruits

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40
Q

Molecular weight of plastics ranges from

A

20000 to 250000

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41
Q

Acrylonitrile is mainly used in the ____ industry.

A

dyeing

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42
Q

The enzyme which converts starch into the disacharides maltose is

A

diastase

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43
Q

Pick out the false statement pertaining to water treatment.

A

The zeolite water softening process reduces the hardness of water by not more than 50%.

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44
Q

Presence of H

A

increased dosage of chlorine to provide a disinfecting residual in the water.

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45
Q

Contact process of sulphuric acid manufacture

A

yields acid of higher concentration than chamber process.

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46
Q

Fat dispersed in water is exemplified by

A

butter

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47
Q

Maleic anhydride is produced by catalytic oxidation of

A

benzene

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48
Q

Catalyst used in the oxidation of benzene to produce maleic anhydride is

A

V

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49
Q

Widely used method for the conditioning of boiler feed water is the

A

hot-lime soda process

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50
Q

Blue colour is imparted to glass by the addition of

A

CaO

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51
Q

In the manufacture of viscose rayon, the raw material used industrially is

A

fine teak wood

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52
Q

Bordeaux mixture is a/an

A

inorganic fungicide

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53
Q

Silicone is a/an

A

inorganic polymer

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54
Q

Nickel is not used as a catalyst in the ____ reaction.

A

shift conversion

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55
Q

Roasting of metallurgical ores is done mainly to

A

remove arsenic & sulphur.

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56
Q

Molasses is the starting material for the production of

A

alcohol

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57
Q

BHC (Benzene hexachloride) is made by the chlorination of benzene

A

which is an addition reaction.

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58
Q

Diaphragm electrolytic cell as compared to mercury electrolytic cell

A

requires lesser investment for similar capacity.

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59
Q

Calcareous & argillaceous materials are used in the manufacture of

A

cement

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60
Q

Pick out the wrong statement.

A

none of these.

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61
Q

Commercial production of calcium carbide requires limestone and ____ as raw materials.

A

coke

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62
Q

Which one of the following is not likely to be a constituent of vegetable oils ?

A

Citric acid

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63
Q

Nitroglycerene absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as a controlled explosive called dynamite. The raw material used for its manufacture are glycerene, nitric acid and

A

sulphuric acid

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64
Q

The process involved in converting rubber into a thin sheet or coating it on fabric is called

A

calendering

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65
Q

Detergent is produced by the sulphonation of dodecyl benzene, which is an ____ reaction.

A

both (b) and (c)

66
Q

Air used in aerobic fermentation must be sterilized, otherwise the

A

contamination of pure culture would result.

67
Q

Alkylbenzene sulfonate (ABS) is a

A

detergent

68
Q

High temperature carbonisation of coal produces

A

none of these.

69
Q

Alcohol content in freshly prepared natural and fortified wine may be respectively around ____ percent.

A

7-14 and 14-30

70
Q

Setting of plaster of paris is accompanied with

A

hydration

71
Q

Process conditions in fermentator used for production of penicillin is

A

25°C, 2 atm.

72
Q

Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of

A

arsenic

73
Q

Sodium chloride content in sea water is about ____ gms/litre.

A

25

74
Q

Fluorescent dyes are added in detergents to

A

act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the whiteness appearance of white fabrics.

75
Q

High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to

A

both (a) and (b).

76
Q

Polyvinyl chloride (PVC) is

A

made by employing emulsion polymerisation.

77
Q

Bleaching of paper pulp is done with

A

chlorine or chlorine dioxide

78
Q

Pick out the wrong statement.

A

none of these.

79
Q

Isopropyl benzene produced by alkylation of benzene with propylene is known as

A

cumene

80
Q

Consider the production of ammonia from methene and air as raw materials. The catalyst used are: (

A
  • Ni/Al
81
Q

For the hydrogenation of oils ____ (A) ____ is commonly used as catalyst and ____ (B) ____ is a catalyst poison.

A

(A) nickel (B) sulphur

82
Q

Main constituents of natural rubber is

A

polyisoprene

83
Q

Highly porous refractory bricks are

A

none of these.

84
Q

Fumigant insecticides

A

emit poisonous vapour.

85
Q

Which of the following is an endothermic reaction ?

A

Both (b) and (c).

86
Q

Fermentator temperature during production of alcohol from molasses is around ____ °C.

A

30

87
Q

Which of the following coals has the highest calorific value ?

A

Anthracite

88
Q

Which of the following is not an abrasive material ?

A

Bakelite

89
Q

Pick out the wrong statement.

A

Red color is imparted to glass by addition of arsenic oxide.

90
Q

Finely ground calcium aluminate & silicate is a/an

A

cement

91
Q

Cooking liquor in case of sulphite process is

A

sodium sulphite and sodium bisulphite.

92
Q

90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at ____ °C.

A

10-30

93
Q

Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as ____ oil.

A

non-drying

94
Q

Fats as compared to oils have

A

less unsaturated glycerides of fatty acids.

95
Q

Thermal pyrolysis of ethylene dichloride produces

A

vinyl chloride

96
Q

The main component of pyrex glass is

A

lead

97
Q

Alum [Al

A

all (a), (b) and (c)

98
Q

____ is an ore concentrating metallurgical process involving a chemical change.

A

Roasting

99
Q

Basic oxide is absent in ____ glass.

A

quartz

100
Q

Graphite is a/an

A

both (b) and (c).

101
Q

Nylon-6 is a

A

polyamide

102
Q

Enzymes are

A

all (a), (b) and (c).

103
Q

Multistage catalytic converter is not used in the

A

NH

104
Q

The main product of high temperature carbonisation of coal is

A

coke

105
Q

____ is a thermosetting plastic.

A

Epoxy polymer

106
Q

In an integrated steel plant, NH

A

(NH

107
Q

Flexible foam (for mattresses) is usually made of

A

polyurethanes

108
Q

Glycerine is a by-product of the ____ industry.

A

soap

109
Q

One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

A

adjust the pH of the syrup.

110
Q

Permanent hardness of water can be removed by

A

all (a), (b), and (c).

111
Q

Chalcopyrite is the main ore of

A

copper

112
Q

The end bleaching agent used to move last traces of colour bodies from the pulp is

A

chlorine dioxide (ClO

113
Q

Bio-degradable detergents

A

can be readily oxidised.

114
Q

Sea water contains about ____ ppm of bromine.

A

70

115
Q

Which allotrope of sulphur is insoluble in carbon disulphide ?

A

Plastic sulphur

116
Q

Lubricating greases are a mixture of

A

mineral oil, soap and additives.

117
Q

Metallic soap is ____ salt of fatty acids.

A

aluminium or calcium

118
Q

Cation exchanger is regenerated usually with

A

H

119
Q

In contact process, SO

A

water forms an acid mist, which is difficult to absorb.

120
Q

Bitterns is a/an

A

none of these.

121
Q

The most widely used coagulant for removing suspended impurities from water is

A

alum

122
Q

Main constituent of limestone is

A

CaCO

123
Q

____ is obtained as a by-product in the manufacture of sodium hydroxide using brine.

A

Chlorine

124
Q

Fat splitting catalyst is

A

ZnO

125
Q

Phthalic anhydride is used

A

as plasticisers

126
Q

Penicillin is separated from fermented broth by

A

extraction with amyl or butyl acetate.

127
Q

____ process is used for producing soda ash.

A

Solvay

128
Q

Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on

A

slaked lime

129
Q

Which of the following is an unsaturated fatty acid ?

A

Oleic acid

130
Q

The yield of tar from high temperature carbonisation of dry coal is about ____ percent.

A

3

131
Q

____ is used as a flux in the smelting of copper ore like chalcopyrite.

A

Silica/quartz

132
Q

Phenol formaldehyde is produced by condensation polymerisation. It is also known as

A

bakelite

133
Q

Hydrogenation of oil does not

A

none of these.

134
Q

Main constituents of cotton fiber is

A

cellulose

135
Q

CaCl(OCl) is the chemical formula of

A

bleaching powder

136
Q

Which is the most suitable dye for synthetic fibres ?

A

Acid dye

137
Q

Pick out the wrong statement.

A

none of these.

138
Q

Pick out the wrong statement.

A

Acetylene gas can not be used for illumination purpose.

139
Q

Hydrolysis of sugar is called

A

inversion

140
Q

Sulphuric acid completely saturated with sulphur trioxide is called

A

concentrated sulphuric acid.

141
Q

Fish contains about ____ percent oil.

A

20

142
Q

The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to

A

avoid mechanical weakening of fibre.

143
Q

Polymethyl methacrylate (PMMA) is known as

A

perspex

144
Q

Coloured glass is obtained by mixing of colored salts. Addition of ____ oxide is done to impart greenish blue color to the glass.

A

copper

145
Q

Percentage of alcohol in beer may be around ____ percent.

A

2-8

146
Q

Which of the following is an ore of iron ?

A

Hematite

147
Q

Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process ?

A

NH

148
Q

High purity nitrogen is used in

A

both (a) & (b).

149
Q

Commercial production of soda ash by Solvay process requires limestone, ____ as raw materials.

A

brine and coal

150
Q

Naphthalene is removed from coke oven gas by

A

scrubbing with wash oil.

151
Q

The compressive strength of cement should not be less than about 110Kg/cm

A

1600

152
Q

Which of the following is not present in bagasse fibre ?

A

None of these

153
Q

Nitric acid is not used in the manufacture of

A

detergents

154
Q

Naphthols are derivates of

A

naphthalene

155
Q

Fermentation is adversely affected by the

A

high concentration.

156
Q

Extraction of ____ employs an electrolytic process.

A

aluminium

157
Q

Dechlorination of treated water is necessary to

A

remove chlorinous taste.

158
Q

Fire clay is ____ refractory material.

A

an acidic

159
Q

An oil is converted into fat by its

A

hydrogenation

160
Q

Production of one ton of cement requires about ____ tons of limestone.

A

1.2

161
Q

Low temperature carbonisation of coal takes place at ____ °C.

A

700

162
Q

Shaving soaps are

A

soft potassium soaps (potassium salt of fatty acid) with free stearic acid to give lather a lasting property.

Chemical Engineering Reviewer (42 decks)

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