The gas collected in the test tube in the experiment shown below is___.

oxygen

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carbon dioxide

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nitrogen

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combination of nitrogen and hydrogen

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Solution

The correct option is A
oxygen

Oxygen. This is a classic experiment to demonstrate that oxygen is produced during photosynthesis. The hydrilla plant, being green in colour, carries out photosynthesis and oxygen is produced as a byproduct. Initially, the inverted test tube is completely filled with water, as the gas starts getting produced, one can see it bubbling in the test tube. Later, a glowing splinter test can confirm that the gas is oxygen.

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Similar questions

One of the following is an endothermic reaction. This is :

(a) combination of carbon and oxygen to form carbon monoxide

(b) combination of nitrogen and oxygen to form nitrogen monoxide

(d) combination of zinc and hydrochloric acid to form zinc chloride and hydrogen

The green house gas is:

(a) oxygen (b) nitrogen

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