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1. As one goes higher in the atmosphere, air pressure?

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2. In 1664, Otto Von Guericke, devised an experiment to demonstrate the strength of?

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3. Otto von Guericke was, by profession?

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4. Otto Von Guericke performed his experiment in the presence of?

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5. The beaufort scale was devised by?

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6. The beaufort scale was devised in the year?

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7. The beaufort scale is used to measure?

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8. Daniel Bernoulli was a?

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9. Daniel Bernoulli discovered ........ in 1738 AD.

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10. As per Daniel Bernoulli, whenever air moves, its pressure ........?

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11. The most common compound on earth is?

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12.Life originally emerged from?

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13.About ...... percent of the world's water is solid.?

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14.Less than ........ percent of the world's water is fresh water.?

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15. The amount of water vapour in the atmosphere is known as?

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16.Substances which are very good at absorbing water vapour from air are called?

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17. Any substance that dissolves in the water vapour it absorbs is said to be?

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18.Henry Cavendish was an?

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19.Henry Cavendish proved that water was a compound which included?

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20.The French chemist who showed that water was a simple compound of hydrogen and oxygen was?

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