Kaolin is a/an
Refractory material
Synthetic resin
Artificial abrasive
Blue pigment
Correct Answer :
A. Refractory material
Related Questions
Chloral is used in the manufacture of
DDT
BHC
Parathion
None of these
In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because
SO3 gas is sparingly soluble in water
Water forms an acid mist, which is difficult to absorb
The purity of acid is affected
Scale formation in the absorber is to be avoided
Bromine content in sea water may be around __________ ppm.
70
640
1875
2500
Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.
Endothermic
Exothermic
Irreversible
Both (B) and (C)
Rancidity of the fatty oil can be reduced by its
Decoloration
Hydrogenation
Oxidation
Purification
The most stable allotropic form of phosphorous is the __________ phosphorous.
White
Black
Yellow
Red
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)
Starting raw material for the manufacture of Maleic anhydride is
n-butene
Benzene
Either (A) or (B)
Neither (A) nor (B)
Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and
Sulphuric acid
Phosphoric acid
Hydrochloric acid
Hydrofluoric acid
Oleum produces fumes of
SO2
H2SO4
SO3
SO2 + H2SO4
Mannheim furnace is used in the manufacture of
Hydrochloric acid
H2SO4 by Chamber process
Calcium carbide
Corundum
Thermoplastic materials
Do not soften on application of heat
Are heavily branched molecules
Are solvent insoluble
None of these
The most reactive allotropic form of phosphorus is __________ phosphorus.
Red
Yellow
Violet
Black
Liquor poisoning generally occurs due to the presence of __________ in it.
Ethyl alcohol
Impurities
Methyl alcohol
Carbonic acid
Styrene butadiene rubber (SBR) is
A natural rubber
A synthetic polymer
A synthetic monomer
Another name of silicone rubber
The basic difference between vegetable oils and fats is in their
Density
Chemical properties
Physical state
Composition
Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C.
15-30
90-100
250-300
< 0
Pick out the wrong statement. Iodine value of an oil or fat is
The number of grams of iodine taken up by 100 gm of oil or fat
A measure of its unsaturation
Helpful in findings its adulteration & its suitability for making soap
Independent of the type of oil, whether it is drying or non-drying
RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically
Cyclo trimethylene trinitramine
Trinitro resorcinol
Cyclo tetramethylene tetranitramine
Trinitrobenzene
Glauber's salt is chemically represented by
Na2SO4.10H2O
CaCl(OCl)
CaSO4.H2O
(NH4)2SO4
Na2CO3.10H2O is called
Washing soda
Soda ash
Slaked lime
Quicklime
Solvay process is used for the manufacture of
Caustic soda
Soda ash
Caustic potash
Soda lime
Sucrose content in the raw juice extracted from sugar cane is about __________ percent.
1 - 2
15 - 20
50 - 60
80 - 85
L.D. converter is used in the production of
Pig iron
Steel
Copper
Zinc
Gun powder uses
Sulphur
Charcoal
Potassium nitrate
All (A), (B), & (C)
Silicone is a/an
Thermoplastic
Inorganic polymer
Monomer
None of these
Chemical formula of oleum is
H2SO3
H2SO4
H2S2O7
H2SO7
Production of alcohol by fermentation of molasses is a/an __________ process.
Anaerobic
Aerobic
Endothermic
Both (B) and (C)
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)
Coke used for the production of calcium carbide should have
Low ash content
Low ignition temperature
High electrical resistivity
All (A), (B) and (C)