1. The scientific world was much worried because the Comet Dutta was about to

2. The conference went under total cover of secrecy because

3. The experts decided to have

4. How far Sir Macpherson was hopeful about the success ?

5. Duttada toured the British Isles for

6. Duttada became quite friendly with

7. Cometary collisions are expected to occur

8. Who performed the yajna?

9. How close did Comet Dutta come near Earth?

10. when did he receive the next message from Sir John?