Which of the following alkali metals has highest specific heat?
1). Cesium
2). Rubidium
3). Potassium
4). lithium
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1. Which of the following is ozone depleting pesticide
2. The presence of ozone in the stratosphere is responsible for
3. Atomic number of which of the following elements is greater than that of Calcium?
4. The wire of flash bulb is made of:
5. Poison used for killing rats is
6. Milk tastes sour when it is left in open for some time.This happens due to the formation of
7. Which of the following fibres catches fire least
8. Which among the following is pure matter ?