2. The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock's called
3. The Prime Minister of Britain at the time of India's Independence was?
4. The main buffer system of the human blood is
5. 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
6. The most commonly used bleaching agent is
7. The nucleus of a hydrogen atom consists of
8. The heat required to raise the temperature of body by 1 K is called
9. The nuclear particles which are assumed to hold the nucleons together are
10. The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is
11. The octane number of zero is assigned to
12. The metal that is used as a catalyst in the hydrogenation of oils is
13. The most abundant rare gas in the atmosphere is
14. The Latin word formica means ant. The name formic acid is derived from this Latin word because
15. The ore which is found in abundance in India is
16. The inherited traits of an organism are controlled by
17. The heat energy produced when the human body metabolises 1 gram of fat is
18. What are the number of moles of CO2 which contains 16 g of oxygen?
19. The main use of salt in the diet is to
20. The monomer of polythene is
21. The luster of a metal is due to
22. The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is
23. The most malleable metal is
24. The oil used in the froth floatation process is
25. The number of waves in n x 10th Bohr's orbit are