Polythene is a/an __________ polymerisation product.
Addition
Condensation
Thermosetting
None of these
Correct Answer :
A. Addition
Related Questions
Common salt is generally not produced commonly by __________ method from brine.
Freeze drying
Electrolytic
Solar evaporation
Vacuum evaporation
In an integrated steel plant, NH3 present in coke oven gas is normally recovered as
(NH4)2SO4
NH4Cl
(NH4)2 NO3
Liquid NH3
Which glass is usually used in optical work?
Lead glass
High silica (borosilicate) glass
Photo-sensitive glass
Fibre glass
Flash point of most vegetable oils is about __________ °C.
50
100
200
300
Bitterns is a/an
Unsaturated fat
Starting material for the production of iodine
By-product of chlor-alkali industry
None of these
Main constituents of natural rubber is
Polystyrene
Polyisoprene
Polybutadiene
Polychlorophrene
Potassium is kept & transported under
Water
Liquid ammonia
Kerosene oil
Alcohol
Which of the following is not an insecticide?
Hydrocyanic acid
Nicotine
Sodium fluoride
Hexane
Oil is a/an
Mixture of glycerides
Mixture of glycerides of fatty acids
Solid at normal temperature
Ester of alcohols other than glycerine
Ethyl alcohol cannot be produced
From waste sulphite substrate of paper mills
By Esterification and hydrolysis of ethylene
From molasses
None of these
Varnish does not contain
Thinner
Pigment
Both (A) & (B)
Neither (A) nor (B)
Catalyst used during the manufacture of 'Vanaspati Ghee' is
Zinc
Nickel
Platinum
Copper
Diaphragm electrolytic cell as compared to mercury electrolytic cell
Produces 70% NaOH solution
Requires less specific power consumption for the production of chlorine
Requires lesser investment for similar capacity
All (A), (B) and (C)
Dichloro diphenyl __________ is the full form of DDT (an insecticide).
Tetrachloroethane
Trichloroethane
Tetrachloromethane
Trichloromethane
Main constituent of dolomite is
CaCO3
MgCO3
K2CO3
Na2CO3
Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid.
Phthalic anhydride
Vinyl chloride
Maleic anhydride
Dacron
Production of one ton of cement requires about __________ tons of limestone.
0.6
1.2
2.2
3.8
Sugar content in sugarcane on cane basis is about __________ percent by weight.
1 to 5
5 to 10
15 to 20
20 to 30
An oil is converted into fat by its
Hydrogenation
Hydrolysis
Hydrocracking
Hydration
Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.
Cutting
Fibrillation
Hydration
Strengthening
Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.
-5 to 0
5 to 10
30 to 50
75 to 80
Linde process of gas liquefaction employs
Exchange of heat with colder stream
Adiabatic expansion through a throttle valve (Joule-Thomson expansion)
Adiabatic expansion against a piston or in a turbine
Merely compressing the gas beyond its critical pressure
Digestion of wood-base materials (for manufacture of pulp) is done to
Remove lignin
Produce long fibres
Prevent deterioration on storage
None of these
Styrene-butadiene-rubber (SBR) as compared to natural rubber has
Poorer tensile strength
Poorer resistance to oxidation
Greater amount of heat build-up under heavy loading
All (A), (B) and (C)
Commercial production of Vanaspati is done by __________ of edible vegetable oils.
Hydrogenation
Oxidation
Hydrolysis
Hydrocracking
Which of the following contains least amount of N2?
Coke oven gas
Blast furnace gas
Producer gas
Water gas (blue gas)
Rancidity of the fatty oil can be reduced by its
Decoloration
Hydrogenation
Oxidation
Purification
Haemoglobin is a/an
Amino acid
Biological catalyst
Protein
Enzyme
Main constituent of limestone is
CaCO3
MgCO3
Na2CO3
CaSO4
Impurities present in brine is normally removed by treatment with
NH3 and CO2
Lime and soda ash
Lime, ammonia and carbon
All (A), (B) and (C)