1. The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is

2. The most commonly used bleaching agent is

3. The nucleus of a hydrogen atom consists of

4. The heat required to raise the temperature of body by 1 K is called

5. The nuclear particles which are assumed to hold the nucleons together are

6. The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is

7. The octane number of zero is assigned to

8. The metal that is used as a catalyst in the hydrogenation of oils is

9. The most abundant rare gas in the atmosphere is

10. The Latin word formica means ant. The name formic acid is derived from this Latin word because