The group of metals Fe, Co, Ni may best called as:
A). Transition metals
B). Main group metals
C). Alkali metals
D). Rare metals
1. German silver is an alloy of
2. The period of revolution of a geo stationary satellite is
3. Which of the following is chiefly present in LPG (Liquefied Petroleum Gas)?
4. What is the most common salt in sea water ?
5. Which one of the following is extensively used for sterilizing water ?
6. Necessary element of change in solar energy to electric energy
7. Commercial cork is obtained from the species of
8. Philosopher’s wool is chemically known as ________.
9. Which of the following in automobile exhaust can cause cancer?
10. When water itself combines chemically with some element or mineral it is called