Commercial production of calcium carbide requires limestone and __________________ as raw materials?

Related Mcqs:

1. 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...

2. 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....

3. Production of one ton of cement requires about _______________ tons of limestone ?

   A. 0.6 B. 1.2 C. 2.2 D. 3.8...

4. 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....

5. Main product in calcium carbide-water reaction is___________________?

   A. Ca(OH)2 B. C2H2 C. CO2 D. CaCO3...

6. The temperature in the calcium carbide furnace is _______________ °C ?

   A. 200-300 B. 700-850 C. 2000-2200 D. 4000-4500...

7. Raw materials required for the manufacture of __________________ is acetylene and hydrochloric acid?

   A. Phthalic anhydride B. Vinyl chloride C. Maleic anhydride D. Dacron...

8. 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...

9. 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...

10. Raw materials used for producing ________________ cement does not contain iron oxide?

    A. Waterproof B. Slag C. White D. Pozzolan...