A. Coke
B. Sand
C. Soda ash
D. Fuel oil
Related Mcqs:
- Commercial production of soda ash by Solvay process requires limestone, ___________________ as raw materials?
A. Coke and sand
B. Brine and coal
C. Coke and caustic soda
D. None of these - Coke used for the production of calcium carbide should have____________________?
A. Low ash content
B. Low ignition temperature
C. High electrical resistivity
D. All A , B. and C. - Production of one ton of cement requires about _______________ tons of limestone ?
A. 0.6
B. 1.2
C. 2.2
D. 3.8 - Reaction of calcium carbide with water produces a gas, which is used_________________?
A. As an illuminant
B. For metal cutting/welding
C. Both A. & B.
D. Neither A. nor B. - Main product in calcium carbide-water reaction is___________________?
A. Ca(OH)2
B. C2H2
C. CO2
D. CaCO3 - The temperature in the calcium carbide furnace is _______________ °C ?
A. 200-300
B. 700-850
C. 2000-2200
D. 4000-4500 - Raw materials required for the manufacture of __________________ is acetylene and hydrochloric acid?
A. Phthalic anhydride
B. Vinyl chloride
C. Maleic anhydride
D. Dacron - Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4 + 4H2, is not practised, as it is __________________?
A. A slow reaction
B. A discontinuous reaction (requiring regeneration of iron by water gas intermittently)
C. Still in development stage (by employing fluidised bed technique)
D. All A , B. and C - Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about _____________ percent?
A. 75
B. < 10
C. > 30
D. 50 - Raw materials used for producing ________________ cement does not contain iron oxide?
A. Waterproof
B. Slag
C. White
D. Pozzolan
