|
The substance which is known as “dry ice” is |
|||
|
(a) |
potassium permanganate |
(b) |
copper sulphate |
|
(c) |
sulphur dioxide |
(d) |
solid carbon dioxide |
|
The substance which is known as “dry ice” is |
|||
|
(a) |
potassium permanganate |
(b) |
copper sulphate |
|
(c) |
sulphur dioxide |
(d) |
solid carbon dioxide |