state the observation for the following when (i) manganese dioxide react with conc.HCI. ii) a glass rod dipped in conc. hydrochloric acid is a brought near ammonia gas. iii) conc. sulphuric acid added to carbon.
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Explanation:
1. A greenish yellow gas is evolved which has a suffocating smell (Cl2)
2. Thick white fumes of NH4Cl is formed
3. A gas is evolved which turns lime water milky(CO2) and another gas (SO2) is also evolved which turns acidified dichromate paper orange to green.
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