Question

Observe the set of apparatus and answer the following questions.

CO₂ - a by product of energy release 

i) Which process do we know with the help of this experiment?

ii) How does this process differ with respiration?

iii) What are the similarities between this process and respiration?

iv) Which gas turns lime – water milky?

Answer 1

i) Combustion.

ii) Respiration occurs in the presence of water. Combustion occurs in the absence of water.

iii) In both processes energy is released.

iv) Carbon-di-oxide (CO₂)