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# Give the characteristic tests for the following gases

**(a) **CO_{2}

**(b)** SO_{2}

**(c)** O_{2}

**(d) **H_{2}

The characteristic tests are given below:

(a) CO2 : On passing CO

_{2 }into limewater, it turns**limewater milky.**(b) SO2: The rotten egg smell is the characteristic feature of SO

_{2}**.**(c) O2: When a glowing splinter is brought near oxygen, it starts

**burning brightly.**(d) H2: When a burning matchstick is brought near H

_{2}gas, the flame burns with the**pop sound.**- Related Questions & Answers
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