Question

1. Oxygen and (nitrogen / hydrogen) are the two main gases present in the atmosphere.
2. If the constitutional machinery of a state breaks down, the Governor recommends
(President's rule / Governor's rule).
3. Akbar defeated (Hemu / Rana Pratap) in the Battle of Haldighati.
4. Ghiyas-ud-din Balban belonged to the (Slave / Tughluq) Dynasty.
5. The (Pampas / Llanos) is not a tropical grassland.​

Answer 1

Answer:

1. Oxygen and nitrogen are the two main gases present in the atmosphere