Question

Observe the given figure.
It shows a substance X reacting with dilute nitric
acid. The test tube becomes warm after the
reaction. Limewater is used to confirm the identity
of the gas produced. Which of the statements
mentioned in the figure about this reaction are
correct?​

Answer 1

Answer:

1. Nitrogen does not turn lime water milky.

2. sodium carbonate

3. Burning of coal, wood or leaves is also a chemical change. In fact, burning of any substance is a chemical change. Burning is always accompanied by production of heat. Explosion of a firework is a chemical change

4. yes