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Properties of Water

Oxygen is col...

Question

Oxygen is collected by downward displacement of water since it weighs __________ as/than air.

A

heavier

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B

lighter

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C

same

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D

none of the above

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Solution

The correct option is B same
The weight of oxygen is almost same as that of air.

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Similar questions

Q. Assertion :Oxygen is collected by the downward displacement of water and not over air. Reason: Downward displacement of water is used to collect oxygen. Any gas be collected by this method and the gas pushes the water down as it is lighter and do not react with water.

Q. Ammonia gas is collected by ______.

(an upward displacement of air, a downward displacement of water, a downward displacement of air)

Oxygen is slightly _________ than air hence it is collected by the _________ displacement of water.

Q. Assertion :Ammonia gas collected over water by the downward displacement of air. Reason: Ammonia is not collected over water since it is highly soluble in water.

Q. Assertion :The downward displacement of air method used for drying and collecting ammonia gas. Reason: Ammonia gas is lighter than air and hence collected by the downward displacement of air. Ammonia is not collected over water since it is highly soluble in water.(1 vol.of water dissolves about 702 vol.at 20C and 1 atm pressure). The drying agent used is calcium oxide.

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