The following flow chart gives the techniques to separate the constituents of a mixture.

Question

i. What could be ‘A’?
a) Metal
b) Carbon dioxide
c) Water
d) Oxygen

ii. What could be ‘B’?
a) Acid
b) Base
c) Metal oxide
d) Non-metal oxide

iii. What could be ‘C’?
a) Acid
b) Base
c) Neutral solution
d) None of them

iv. What could be ‘D’?
a) Blue
b) Red
c) Purple
d) Green

v. What could be ‘E’?
a) Blue
b) Red
c) Purple
d) Yellow