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
Correct Answer :
A. Which is an addition reaction
Related Questions
Dense soda ash used in the manufacture of glass, is chemically represented by
Na2CO3
Na2CO3.10H2O
Na2CO3.H2O
Na2HCO3
Pick out the wrong statement.
Hard glass which is used for making laboratory glass wares is a mixture of sodium borosilicate and aluminium borosilicate
Glass is decolorized during its manufacture by adding antimony oxide, manganese dioxide or arsenic oxide
Ordinary glass is represented chemically by Na2O . CaO . 6SiO2
Red color is imparted to glass by addition of arsenic oxide
Sodium chloride content in sea water is about __________ gms/litre.
2
10
25
50
Oxygen is produced by fractionation of air using __________ process.
Linde's
Claude's
Either (A) or (B)
None of these
Which is the most suitable dye for synthetic fibres?
Acid dye
Azoic dye
Pigment dye
Mordant dye
Which is a high grade pulp?
Rag pulp
Mechanical pulp
Sulphate pulp
Sulphite pulp
Calcination of limestone is not done in a __________ kiln for producing lime.
Vertical shaft
Rotary
Fluidised bed
Fixed bed
Industrial production of chloroform requires acetone and
Phosgene
Calcium hypochlorite
Chlorine
Ammonium chloride
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 (A), (B) & (C)
Calgon used in water treatment is chemically
Sodium phosphate
Sodium hexametaphosphate
Calcium phosphate
Tricresyl phosphate
In sulphate pulp manufacture, the pressure and temperature in the digestor is
10 atm., 800 °C
10 atm., 170-180°C
1 atm., 170 - 180°C
1 atm., 800°C
Soaps remove dirt by
Increasing the surface tension
Decreasing wettability
Supplying hydrophilic group
None of these
Salt cake is chemically represented by
Na2SO4
CaSO4. ½H2O
MgSO4
BaSO4
Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used
As a lubricant
As a rust preventive
In hard water for cleaning of cloth
As a foam depressant in distillation column
Manufacture of phthalic anhydride uses __________ as a catalyst.
Ni
Cr
V2O5
Al2O3
Thermosetting materials
Are cross-linked molecules
Soften on application of heat
Are solvent soluble
None of these
Economics of 'Solvay Process' depends upon the efficiency of
Carbonating tower
Ammonia recovery
Ammonia recovery and size of the plant
Ammoniation of salt solution
Raw material used in alcohol distilleries in India is
Molasses
Benzol
Methylated spirit
None of these
A unit operation is exemplified by the process of
Reduction
Desorption
Nitration
Combustion
In the Lurgi coal gasifier
Coking coals cannot be used
Low carbon conversion efficiency is achieved
Entrainment of solids is higher
Large quantity of coal can be processed
Use of chlorine in the treatment of sewage
Helps in grease separation
Increases the biological oxygen demand (BOD)
Causes bulking of activated sludge
Aids in flocculation
Which of the following is not an antibiotic?
Penicillin
Streptomycin
Tetracycline
Quinine
High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to
Flocculate the impurities
Facilitate fast filtration
Both (A) and (B)
Neither (A) nor (B)
Pick out the wrong statement.
Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators
Gun powder comprises of 75% salt petre, 15% charcoal and 10% sulphur
Lead azide is a popular military explosive
TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being
Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo?
Depithing
Digestion
Bleaching
None of these
90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ °C.
< 0
10-30
250-280
500-600
__________ glass is used for the manufacture of optical glass.
Pyrex
Soda
Flint
Crooke's
Sucrose is a
Monosaccharide
Disaccharide
Polysaccharide
None of these
Lindane is
Not a fumigant
BHC (Benzene Hexachloride) containing 99% γ-isomer
A by-product of BHC manufacture
Both (B) and (C)
Riboflavin is a/an
Vitamin
Analgesic drug
Anaesthetics
Anti-malarial drug