(a) Decomposed
(b) Evaporated
(c) Oxidized
(d) Reduced
Answer:
A mixture of carbon monoxide and hydrogen is called
(a) Natural gas
(b) Producer gas
(c) Water Gas
(d) None of these
Answer:
A substance that can be supply energy either alone or by reacting with another substance is known as
(a) Thiokol
(b) Fuels
(c) Rayon
(d) Fibres
Answer:
In which mode of expression, the concentration of the solution remains independent of temperature
(a) Formality
(b) Molarity
(c) Normality
(d) None of these
Answer:
To protect iron against corrosion, the durable metal plating on it, is
(a) Zinc plating
(b) Nickel plating
(c) Tin plating
(d) Copper plating
Answer:
The formation of colloid from suspension is
(a) Sedimentation
(b) Peptisation
(c) Condensation
(d) None of these
Answer:
An aqueous solution of copper sulphate is acidic in nature because the salt undergoes
(a) Hydrolysis
(b) Photolysis
(c) Electrolysis
(d) Dialysis
Answer:
The most abundant metal in the earth's crust is
(a) Iron
(b) Calcium
(c) Magnesium
(d) Aluminium
Answer:
Gold and silver are extracted from their respective ores by
(a) Leaching
(b) Hydro metallurgy
(c) Smelting
(d) Roasting
Answer:
Tin and lead can be refined by
(a) Bessemerisation
(b) Cupellation
(c) Poling
(d) Liquation
Answer: