Question

v) The list shows four methods that were suggested for the
formation of CO2.
1 action of an alkali on a carbonate
2 action of heat on a carbonate
3 complete combustion of methane
4 reaction of a carbonate with oxygen
Which methods would result in the production of CO2?
A 1 and 2 B 1 and 4 C2 and 3 D 3 and 4​

Answer 1

Answer:

B. 1 and 4

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Answer 2

Answer:  C

Explanation: 2CO3 -------> 2CO2 + O2 the action of heat on the carbonate produces CO2, so 2 is correct

CH4 + 2O2 -----> CO2 + 2H2O this is a complete combustion with methane and produces CO2, so 3 is correct

ANS: C) 2 AND 3