Question

Observation when zinc carbonate heated strongly in a test tube

Answer 1

Answer:

When  zinc carbonate is heated strongly it turns yellow and decomposes. Carbon dioxide gas is liberated, which forms a precipitate in lime water. The yellow solid left behind in the test tube is hot zinc oxide. As zinc oxide cools down, it turns white in colour.

Explanation:

Answer 2

Answer:

when zinc carbonate is heated strongly in a test tube it turns yellow when hot and becomes white when cold.

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