Plaster of Paris is __________________?
A. CaSO4.½H2O
B. Used for setting of broken bones
C. Both A. and B.
D. Same as gypsum
Chemical Process
Blue vitriol is chemically___________________?
Blue vitriol is chemically___________________?
A. Copper sulphate
B. Ferrous sulphate
C. Copper nitrate
D. Aluminium sulphate
Sulphuric acid is mainly used in the _______________ industry ?
Sulphuric acid is mainly used in the _______________ industry ?
A. Fertiliser
B. Steel
C. Paper
D. Paint
Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4 + 4H2, is not practised, as it is __________________?
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
Silicon carbide is a/an_______________?
Silicon carbide is a/an_______________?
A. Adhesive
B. Abrasive
C. Type of glass
D. Brittle material
Le-Blanc process is a primitive process for the manufacture of___________________?
Le-Blanc process is a primitive process for the manufacture of___________________?
A. Caustic soda
B. Soda ash
C. Bromine from sea water
D. Hydrochloric acid
A bio-catalyst produced by living cells which acts independent of the cell is called a/an_______________?
A bio-catalyst produced by living cells which acts independent of the cell is called a/an_______________?
A. Substrate
B. Enzyme
C. Nutrient
D. None of these
Electro deposition of metals i.e. electroplating is never done on_____________________?
Electro deposition of metals i.e. electroplating is never done on_____________________?
A. Metals
B. Alloys
C. Refractories
D. Non-metals
Gypsum is chemically __________________ ?
Gypsum is chemically __________________ ?
A. Calcium chloride
B. Potassium sulphate
C. Sodium sulphate
D. Calcium sulphate
Trinitro-toluene (TNT) is _________________ ?
Trinitro-toluene (TNT) is _________________ ?
A. Used in glycerine manufacture
B. An explosive
C. Used in dye manufacture
D. None of these