1. Excessive bleeding during an injury is because of the deficiency of:

2. A collection of system programs that controls and coordinates the overall operations of a computer system is called

3. The earth is closest to sun in:

4. A covalent bond is formed between two atoms when they:

5. Which of the following produces seeds but no fruits?

6. Diseases spreading from person to person are called:

7. Which atmospheric layer contains lons and helps in wireless communication?

8. Artificial noise is a:

9. Blue colour of sky is due to:

10. A light sensitive device that converts drawing, printed text or other images into digital forms is called

11. The energy which is unavailable in system is called:

12. The example of cold-blooded animal is/are:

13. Spanish Influenza of 1918-19 was caused by which influenza virus?

14. The ozone layer is present in:

15. Tropical Cyclones in China Sea are called?

16. Rotation of earth is cause of:

17. The hottest planet of solar system is:

18. The place or environment where a plant or animal naturally or normally lives or grows is called:

19. Night blindedness is caused due to the deficiency of:

20. The weight of an object on moon is____the weight of object on earth.