Prepare a timeline of the progress of India in science and technology.

Choose the right option and rewrite the sentence.

................. was named as the first Chairman of atomic energy commission.

A. Dr. Homi Bhabha

B. Dr. Homi Sethna

C. Dr. A.P.J. Abdul Kalam

D. Dr. Raja Ramanna

2. ................ was the first completely indigenous communication satellite made by ISRO.

A. Aryabhatt

B. Insat 1 B

C. Rohini-75

D. Apple

Identify the wrong pair.

1. Prithvi - surface to surface ballistic missile

2. Agni - surface to under water ballistic missile

3. Akash - from the surface to air attacking missile

4. Nag - anti-tank missile

Explain the following concepts.

1. Space research

2. Telex service

Explain the following with reasons.

Pandit Nehru established the Atomic Energy Commission.