Question

IV. Match the following:
Column A
1. The catalyst used in the preparation of oxygen
2. The necessary condition for rusting to occur
3. Carbon dioxide was discovered by burning material
rich in carbon
4. The amount of water vapour in air
5. It turns moist blue litmus red
Column B
(a) Helmont
(b) Carbon dioxide
(C) Humidity
(d) Moisture and air
(e) Manganese dioxide​

Answer 1

Answer:

apananka gandi phatiba ki

Answer 2

Answer:

1e , 2D , 3A , 4c ,5b this is the answer