Question

1. Iron filings and sulphur were mixed together and divided into two parts, 'A' and 'B'. Part' A' was heated
strongly while part 'B' was not heated. Dilute hydrochloric acid was added to both the parts and evolution of
gas was seen in both the cases. How will you identify the gases evolved?

Plz answer only if u know :)
It's a question of 9th class.​

Answer 1

Answer:

As part 'A' is heated, a compound FeS is formed by the reaction between iron filings and sulphur. When dilute HCI is added to part A, FeS will react with dil HCI to form H2S gas which has smell of rotten eggs and will turn lead acetate paper black. ... When dil, HCI is added to it, iron filings react with dill.

Explanation:

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