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Quiz 9
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Q.1
Bio-degradable detergents
Can be readily oxidised
Pose problem in sewerage plant
Have an isoparaffinic structure
Should not be used as it spoils the cloth
Q.2
Bitterns is a/an
Unsaturated fat
Starting material for the production of iodine
By-product of chlor-alkali industry
None of these
Q.3
Saponification number of an oil or fat
Gives an idea about its molecular weight
Is inversely proportional to its molecular weight
Detects its adulteration
All of the above
Q.4
The difference between saponification value and acid value is
Called ester value
Always negative
Constant for all fatty oils
None of these
Q.5
Hydrogenation of oil takes place in a/an __________ reactor.
Autothermal
Trickle bed
Plug flow
None of these
Q.6
Calcination of gypsum produces
Plaster of paris
Salt cake
Nitre cake
Lime
Q.7
CaO is called
Quick lime
Slaked lime
Limestone
Calcite
Q.8
High temperature carbonisation of coal produces
Inferior coke compared to low temperature carbonisation
Less of gases compared to liquid products
Larger quantity of tar compared to low temperature carbonisation
None of these
Q.9
BHC (Benzene hexachloride) is made by the chlorination of benzene
Which is an addition reaction
Which is a substitution reaction
In absolute dark
In presence of sunlight
Q.10
Multistage catalytic converter is not used in the
Conversion of SO₂ to SO₃
NH₃ synthesis reaction
Both A & B
Neither A nor B
Q.11
Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in
Pyrolysis of oil
Sintering of porous catalyst
Hydrogen embrittlement
All of the above
Q.12
Presence of H₂S in raw water (to be chlorinated) results in the
Reduced softening capacity of zeolite
Increased dosage of chlorine to provide a disinfecting residual in the water
Easy removal of its hardness
None of these
Q.13
Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of
Carbon
Arsenic
Lead
Sulphur
Q.14
Which is the most suitable dye for synthetic fibres?
Acid dye
Azoic dye
Pigment dye
Mordant dye
Q.15
Blue vitriol is chemically
Copper sulphate
Ferrous sulphate
Copper nitrate
Aluminium sulphate
Q.16
Salt is the basic raw material for the manufacture of
Cement
Glass
Potteries
Caustic soda
Q.17
Fatty material used in soap making is
Fatty acid
Fatty alcohols
Tallow
Detergents
Q.18
Fermentator temperature during production of alcohol from molasses is around __________ °C.
5
30
150
300
Q.19
Vinyl chloride (CH₂ = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure & temperature of
4 kgf/cm² & 500°C
10 kgf/cm² & 1000°C
40 kg/cm² & 200°C
100 kgi/cm² & 500°C
Q.20
Raw materials for 'Solvay Process' for manufacture of the soda ash are
Salt, limestone and coke or gas
Ammonia, salt and limestone
Ammonia limestone and coke
None of these
Q.21
Penicillin is separated from fermented broth by
Extraction with amyl or butyl acetate
Ternery azeotropic distillation
Evaporation in calendria
Extractive distillation
Q.22
The temperature in the calcium carbide furnace is __________ °C.
200-300
700-850
2000-2200
4000-4500
Q.23
Presence of carbonaceous matter in the sewage
Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures
Reduces sulphate ions to sulphides causing obnoxious smell
Increases the quantity of chlorine used for its purification
All of the above
Q.24
Lubricating greases are a mixture of
Mineral oil, soap and additives
Mineral oil and metallic soap
Mineral oil and fatty oil
Fatty oil and metallic soap
Q.25
Hydrogenation of edible vegetable oils
Is an exothermic reaction
Increases their melting point
Is done in presence of nickel catalyst
All of the above
Q.26
Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.
Nickel
Vanadium
Alumina
Iron
Q.27
All enzymes are made of
Fats
Carbohydrates
Proteins
Amino acids
Q.28
Reaction of an alcohol with organic acid is called the __________ reaction.
Saponification
Esterification
Neutralisation
Acidification
Q.29
__________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia.
Solvay
Ostwald's
Haber's
None of these
Q.30
Phosphate rock is a raw material for the manufacture of
Phosphoric acid
Phosphorous
Superphosphates
All of the above
Q.31
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
Sulphuric acid
Phosphoric acid
Hydrochloric acid
Hydroflouric acid
Q.32
Calcareous & argillaceous materials are used in the manufacture of
Lead
Cement
Carbon disulphide
None of these
Q.33
Rancidity of the fatty oil can be reduced by its
Decoloration
Hydrogenation
Oxidation
Purification
Q.34
Which of the following is used as a coagulant in treating turbid water?
Chlorine
Ferric sulphate
Calcium sulphate
Activated carbon
Q.35
Antibiotic
Inhibits/destroys the growth of microorganisms
Is used as a pain reliever
Is an antimalarial
Is an anaesthetic
Q.36
__________ paper is used in the manufacture of newsprint paper.
Groundwood
Board
Tissue
Wrapping
Q.37
Impurities present in brine is normally removed by treatment with
NH₃ and CO₂
Lime and soda ash
Lime, ammonia and carbon
All of the above
Q.38
Which of the following is an organo-metal-lic compound?
Isopropyl alcohol
Tetra-ethyl lead
Zeolite
Cumene
Q.39
Analgesic drugs are
Pain relievers
Antibiotics
Used in the treatment of T.B.
Used in the treatment of typhiod
Q.40
Carbon tetrachloride (CCl₄) is the starting raw material for the manufacture of
Trichloroethylene
Perchloroethylene
Parathion
Methanol
Q.41
Sizing material is incorporated in paper to
Impart resistance to penetration by liquids
Increase its thickness
Increase its flexibility & opacity
Increase its brightness
Q.42
Chemical name of Grignard reagent is
Sodium thiosulphate
Ethyl magnesium chloride
Sodium sulphite
Sodium bicarbonate
Q.43
Permanent hardness of water is due to the presence of calcium & magnesium
Bi-carbonates
Sulphates & chlorides
Carbonate
None of these
Q.44
Riboflavin is a/an
Vitamin
Analgesic drug
Anaesthetics
Anti-malarial drug
Q.45
Pick out the exothermic reaction out of the following:
C + H₂O = CO + H₂
CaC₂ + H₂O = Ca(OH)₂ + C₂H₂
MgCO₃ = MgO + CO₂
All of the above
Q.46
Grignard reagent is chemically known as
Ethyl magnesium chloride
Methyl magnesium chloride
Dichlorophenol
Monochloro acetic acid
Q.47
Chemical name of aspirin (an analgesic drug) is
Acetylsalicylic acid
Nictonic acid
Calcium acetate
Methyl salicylate
Q.48
Digestion of wood-base materials (for manufacture of pulp) is done to
Remove lignin
Produce long fibres
Prevent deterioration on storage
None of these
Q.49
In industrial nomenclature, alcohol means
Butyl alcohol
Propyl alcohol
Ethanol
Methyl alcohol
Q.50
Addition of calcium oxide to water produces
Exothermic heat
Hissing sound
Slaked lime
All of the above
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