Coal tar is used as a
Binding material for coal briquettes
Fuel in rotary kiln
Binder in making carbon electrodes
All (A), (B) and (C)
Correct Answer :
D. All (A), (B) and (C)
Related Questions
Yellow phosphorus is transported under
Air
Water
Nitrogen
Helium
At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the concentration of reactants.
Independent of
Directly proportional to
Inversely proportional to
Proportional to the square of
Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.
10
25
50
98
Rotary kiln is not involved in the production of
Cement
Lime from limestone
Slaked lime from quick lime
None of these
__________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace.
Bauxite
Limestone
Quartz
Manganese
__________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
Chlorine
Ammonium chloride
Sodium carbonate
Sodium bi-carbonate
__________ process is used for producing soda ash.
Chamber
Chance
Tromp
Solvay
Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.
Cutting
Fibrillation
Hydration
Strengthening
Industrial production of chloroform requires acetone and
Phosgene
Calcium hypochlorite
Chlorine
Ammonium chloride
Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of
Collagen
Tannin
Molasses
Carbohydrate
Saponification value/number of an oil or fat is a measure of its
Fatty acid content
Degree of unsaturation of the fatty acids present in it
Average molecular weight
Insoluble fatty acid content
How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln?
500°C
750°C
1000°C
1500°C
Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on
Slaked lime
Soda lime
Calcium perchlorate
None of these
Hydrogenation of oil takes place in a/an __________ reactor.
Autothermal
Trickle bed
Plug flow
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)
What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell?
Cl2 & Na
Cl2 & H2
O2 & H2
Cl2, H2 & NaOH solution
__________ Nature of hypo (sodium thiosulphate) makes it useful in photography.
Oxidising
Reducing
Complex forming
Photochemical
Phthalic anhydride is produced by the oxidation of
Naphthalene
Benzene
Toluene
Aniline
__________ of quicklime produces slaked lime.
Hydration
Dehydration
Hydrogenation
None of these
__________ are added in lacquers to remove film brittleness and to improve adhereness.
Film forming materials
Plasticisers
Diluents
Solvents
Polymethyl methacrylate (PMMA) is known as
Bakelite
Teflon
Perspex
Nylon-6
Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the
Fertiliser manufacture
Car battery solution
Synthesis of oleum
Water treatment
White phosphorous is stored under water, because
It does not react with water
It is poisonous
Its kindling temperature in dry air is very low
It is unstable
Pick out the wrong statement pertaining to nitric acid.
About 90% of nitric acid is manufactured by Ostwald's process
It is a strong mono basic acid which reacts with almost all the metals except noble metals
Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)
Arc process of nitric acid manufacture is economical as compared to Ostwald's process
Solvay process as compared to dual process
(i.e. modified Solvay process).
Can use low grade brine
Has less corrosion problems
Involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl
Both (B) and (C)
Varnish does not contain
Pigment
Thinner
Dryer
Anti-skimming agent
Main constituents of cotton fiber is
Lignin
Cellulose
Starch
Gelatine
Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of
Nitric acid
Hydrochloric acid
Methyl alcohol
Formic acid
Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because
Its calorific value is very less
Tar neutralises the residual acids present in pitch
It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop
All (A), (B) and (C)
Oil produced by solvent extraction
Has low free fatty acid content
Is odourless
Both (A) & (B)
Neither (A) nor (B)