Question

Which of the following reactions is not an exothermic reaction? 
a) Reaction of calcium chloride with water b) Decomposition of vegetable matter into compost
c) Process of respiration
d) Decomposition of calcium carbonate to form quick lime and carbon dioxide.

Identify the gas liberated in the following experiment picture
a) Nitrogen
b) Hydrogen
c) Oxygen
d) Carbon Dioxide

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Answer 1

Answer:

1. d) Decomposition of calcium carbonate to form quick lime and carbon dioxide.
2. Hydrogen is the correct answer

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Answer 2

Answer:

1– D

2– B

Explanation:

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