Question

Put water'?
Which of the following materials fall in the category of a “pure
substance”?
(a) Ice
Milk
(c) Iron
(d) Hydrochloric acid
(e) Calcium oxide
(f) Mercury
(g) Brick
(h) Wood
(i) Air.​

Answer 1

C iron
D hydrochloric acid
E calcium oxide
F mercury

Answer 2

Answer:

These materials fall under pure substance :

1. Ice
2. Iron
3. Calcium oxide
4. Mercury