Styrene is produced from ethyl benzene by the process of________________?
A. Dehydrogenation
B. Oxidation
C. Alkylation
D. Dehydration
Chemical Process
White phosphorous is stored under water, because __________________?
White phosphorous is stored under water, because __________________?
A. It does not react with water
B. It is poisonous
C. Its kindling temperature in dry air is very low
D. It is unstable
Paper pulp produced by Kraft/sulphate process is__________________ ?
Paper pulp produced by Kraft/sulphate process is__________________ ?
A. Bleached easily
B. Dull white in color
C. Strong fibrous
D. Dark colored
Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at _____________ °C ?
Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at _____________ °C ?
A. 15-30
B. 90-100
C. 250-300
D. < 0
Oxidation of SO2 to SO3 is favoured by______________________?
Oxidation of SO2 to SO3 is favoured by______________________?
A. Low temperature and low pressure
B. Low temperature and high pressure
C. High temperature and low pressure
D. High temperature and high pressure
Which of the following contains least amount of N2 ?
Which of the following contains least amount of N2 ?
A. Coke oven gas
B. Blast furnace gas
C. Producer gas
D. Water gas (blue gas)
Which of the following is not responsible for causing permanent hardness of water ?
Which of the following is not responsible for causing permanent hardness of water ?
A. Ca(HCO3)2
B. CaCl2
C. MgCl2
D. None of these
Which is the main reducing agent during production of iron from iron ore in a blast furnace ?
Which is the main reducing agent during production of iron from iron ore in a blast furnace ?
A. C
B. CO
C. CO2
D. H2
____________ are used as corrosion inhibitor for iron & steel in aqueous solutions ?
____________ are used as corrosion inhibitor for iron & steel in aqueous solutions ?
A. Phosphates
B. Chromates
C. Sulphates
D. Bi-carbonates
Fusion of bauxite and ________________ produces high alumina cement?
Fusion of bauxite and ________________ produces high alumina cement?
A. Alum
B. Limestone
C. Coke
D. Quartz