|
In which one of the following s reaction does not occur ? |
|
|||
|
(a) |
Common salt is exposed to |
(b) |
Coal is burnt in air |
|
|
(c) |
Sodium is placed in water |
(d) |
Iron is kept in moist air |
|
|
In which one of the following s reaction does not occur ? |
|
|||
|
(a) |
Common salt is exposed to |
(b) |
Coal is burnt in air |
|
|
(c) |
Sodium is placed in water |
(d) |
Iron is kept in moist air |
|