Question

How will you detect the presencof carbondioxide and oxygen

Answer 1

Answer:

A very common test is the lime water test. In this, the gas is passed to the lime water i.e. Calcium hydroxide which turns milky white on reaction with carbon dioxide.

Explanation:

Answer 2

Answer:

Oxygen supports combustion so a good method of testing for oxygen is to take a glowing splint and place it in a sample of gas, if it re-ignites the gas is oxygen. This is a simple but effective test for oxygen.

Carbon dioxide. Carbon dioxide turns limewater milky. A lighted wooden splint goes out in a test tube of carbon dioxide but this happens with other gases, too. So the limewater test is a better choice.

Explanation: