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)
Correct Answer :
C. It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop
Related Questions
Bleaching of paper pulp is done with
Activated clay
Bromine
Chlorine or chlorine dioxide
Magnesium sulphite
Zeolite is used in the
Water treatment
Glass manufacture
Hydrogenation of fatty oil as a catalyst
Development of exposed photographic plate
Ceramics are produced from silicates or clayish materials: Which of the following is not a ceramic material?
Slag cement
Glasses
Porcelain/Potteries
Teflon
Which of the following is a detergent?
Benzene hexachloride
Alkyl benzene sulphonate
Polytetrafluoroethylene
Cellulose nitrate
Laboratory glass wares which reacts with hydrofluoric acid, are made of the __________ glass.
Lead
Borosilicate
Soda lime
Alkali silicate
Which of the following processes can remove both temporary as well as permanent hardness of water?
Filtration
Boiling
Distillation
None of these
Which one of the following is not an elastomer?
Polyisoprene
Neoprene
Nitrile-butadiene
None of these
Common salt is generally not produced commonly by __________ method from brine.
Freeze drying
Electrolytic
Solar evaporation
Vacuum evaporation
Epoxy resin
Is a good adhesive
Is an elastomer
Cannot be used for surface coatings
Is a polyester
The difference between saponification value and acid value is
Called ester value
Always negative
Constant for all fatty oils
None of these
Oleum produces fumes of
SO2
H2SO4
SO3
SO2 + H2SO4
Kopper-Totzek coal gasifier
Can give ammonia synthesis gas (H2 + N2)
Is a moving bed reactor
Cannot use coking coal
Operate at very high pressure
The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at
SASOL (in South Africa)
Redcar (U.K.)
Los Angeles (U.S.A.)
Trombay (India)
During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to
Increase the rate of absorption
Avoid corrosion
Reduce the cooling water circulation rate
None of these
A substance produced by a living organism and capable of anti-microbial activity is called a/an
Antibiotic
Antiseptic
Disinfectant
None of these
Main constituents of cotton fiber is
Lignin
Cellulose
Starch
Gelatine
Which of the following is used as a binding material in soap to improve soap texture?
Rosin
Borax
Benzyl acetate
Sodium carbonate
Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces
Nylon-6
Dacron
Polyester
PVC
Ultimate analysis of coal determines its __________ content.
Carbon, hydrogen, nitrogen & sulphur
Carbon, ash, sulphur & nitrogen
Carbon, sulphur, volatile matter & ash
Carbon, volatile matter, ash & moisture
Viscosity index improver (like polystyrene or polyisobutylene) is added to lubricant to
Reduce its viscosity
Increase its viscosity
Reduce the variation in its viscosity with temperature
Increase the variation in its viscosity with temperature
Calcination of limestone is not done in a __________ kiln for producing lime.
Vertical shaft
Rotary
Fluidised bed
Fixed bed
Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of
Collagen
Tannin
Molasses
Carbohydrate
Dehydrogenation of Isopropanol produces
Propyl alcohol
Acetone
Trichloroethylene
Formaldehyde
Sea weeds are an important source of
Fluorine
Chlorine
Bromine
Iodine
Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent.
10
50
80
95
Wet chlorine gas produced during electrolysis of brine is dehydrated by
Spraying 66° Be H2SO4 counter current to the flow of the gas
Passing it through a bed of diatomaceous earth
Passing it through a bed of silica gel
None of these
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
Nylon-66 is manufactured from
Hexamethylene diamine and adipic acid
Hexamethylene diamine and Maleic anhydride
Caprolactam
Dimethyl terephthalate and ethylene glycol
Removal of dirt/soil by soaps or detergent does not involve the __________ of soil.
Emulsification
Dispersion
Precipitation
Wetting
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
Adjust the pH of the syrup
Remove the coloring matter from the syrup
Reduce the viscosity of the syrup
Improve the rate of crystallisation of sugar