___________________ iron is the purest form of iron?
		A. Cast
B. Wrought
C. Pig
D. High silicon
		A. Cast
B. Wrought
C. Pig
D. High silicon
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
		A. Addition of alum (a coagulant)
B. Boiling
C. Filtration (through gravity sand filter)
D. Addition of lime
		A. Soda-lime
B. Fibre
C. Lead
D. Borosilicate
		A. Acrylonitrile and butadiene
B. Acrylonitrile and styrene
C. Isobutylene and isoprene
D. None of these
		A. Exchange of heat with colder stream
B. Adiabatic expansion through a throttle valve (Joule-Thomson expansion)
C. Adiabatic expansion against a piston or in a turbine
D. Merely compressing the gas beyond its critical pressure
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.