1. Which of the following antiseptic compound is present in dettol?
2. Exobiology is a science that deals with
3. Which of the following alloy is used to made safety fuse-wire?
4. Which gas is used to dilute oxygen in the gas cylinders used by divers ?
5. Which method of water purification does not kill microorganism ?
6. Which of the following maintains the pH level of the blood?
7. Sound and light waves both ______________.
8. A dynamo converts _______________.
9. A camera uses a __________ to form an image on a piece of film at the back.
10. The loudness of sound depends upon______.