Question

D. MATCH THE ENTRIES OF COLUMN A WITH APPROPRIATE ENTRIES OF COLUMN B :
Column A
Column B
1. Decomposition of copper carbonate
2. Decomposition of potassium chlorate
3. Reaction of nitrogen and hydrogen
4. Reaction of zinc and hydrochloric acid
5. Reaction of sulphur dioxide and oxygen
a. oxygen
b. sulphur trioxide
c. hydrogen gas
d. ammonia
e. carbon dioxide​

Answer 1

Answer:carbon dioxide

Explanation:copper carbonate decomposes to a copper metal and fumes of a colourless gas