Starting raw material for the manufacture of Maleic anhydride is
n-butene
Benzene
Either (A) or (B)
Neither (A) nor (B)
Correct Answer :
C. Either (A) or (B)
Related Questions
Portland cement consists mainly of
CaO & SiO2
SiO2 & Al2O3
CaO & Al2O3
CaO & Fe2O3
Fat splitting catalyst is
CaCO3
ZnO
Al2O3
Fe
Oxidation of SO2 to SO3 is favoured by
Low temperature and low pressure
Low temperature and high pressure
High temperature and low pressure
High temperature and high pressure
Phthalic anhydride is produced by the oxidation of
Naphthalene
Benzene
Toluene
Aniline
Which of the following is an unsaturated fatty acid?
Lauric acid
Palmitic acid
Stearic acid
Oleic acid
The temperature in the calcium carbide furnace is __________ °C.
200-300
700-850
2000-2200
4000-4500
The yield of tar from high temperature carbonisation of dry coal is about __________ percent.
3
12
22
0.3
In the Solvay process, the product from the calciner is
Light soda ash
Dense soda ash
Sodium bicarbonate
Dehydrated soda ash
The gasification reaction represented by, C + H2O = CO + H2, is a/an __________ reaction.
Exothermic
Endothermic
Catalytic
Autocatalytic
Viscose rayon is chemically
Cellulose nitrate
Regenerated cellulose nitrate
Cellulose acetate
Regenerated cellulose acetate
Average sulphur content in Indian pyrites is about __________ percent.
15
35
55
70
Dehydrogenation of Isopropanol produces
Propyl alcohol
Acetone
Trichloroethylene
Formaldehyde
Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent.
10
50
80
95
Boiling of water containing temporary hardness produces
CO2
CaSO4
CaHCO3
None of these
Vegetable oils and fats basically differ in their
Density ranges
Physical state
Chemical composition
Chemical properties
Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is
0.14
0.34
0.94
1.4
The major constituents of glass are
Lime, clay and soda ash
Sand, lime and soda ash
Silica, alumina and clay
Silica, alumina and soda ash
A bio-catalyst produced by living cells which acts independent of the cell is called a/an
Substrate
Enzyme
Nutrient
None of these
Lime and soda ash are added to water to remove
Bicarbonates & sulphates of calcium and magnesium
Undesirable taste and odour
Bacteria
Its corrosiveness
Removal of dirt/soil by soaps or detergent does not involve the __________ of soil.
Emulsification
Dispersion
Precipitation
Wetting
Sucrose is a
Monosaccharide
Disaccharide
Polysaccharide
None of these
Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid.
Phthalic anhydride
Vinyl chloride
Maleic anhydride
Dacron
The most commonly used substance to speed up the sedimentation of sewage is
Lime
Sulphuric acid
Chlorine
Sodium bisulphite
Widely used method for the conditioning of boiler feed water is the
Cold lime process
Coagulation
Hot-lime soda process
Sequestration
Fumigant insecticides
Kill insects, when they eat it
Emit poisonous vapour
Are absorbed throughout the plant
None of these
Nylon-6 as compared to Nylon-66 is having higher
Hardness
Abrasion/resistance
Melting point
None of these
Sodium bisulphite is used for __________ water.
Deaeration
Dechlorination
Both (A) & (B)
Neither (A) nor (B)
The combustion reaction, C + O2 = CO2, is
Exothermic
Endothermic
Autocatalytic
None of these
Permanent hardness of water can be removed by
Simply boiling
Adding alum
Passing it through cation & anion exchangers
All (A), (B) and (C)
Salt is the basic raw material for the manufacture of
Cement
Glass
Potteries
Caustic soda