Question

$C{O}_2$ is not a poisonous gas but there is increase in concentration of $C{O}_2$ in the atmosphere due to burning of fossil fuels and decomposition of limestone. The increase in concentration of $C{O}_2$ may lead to :

• A. Increase in photosynthesis in plants
• B. Higher concentration of $C{O}_2$ in water
• C. Increase in greenhouse effect, thus raising the temperature
• D. Increase in formation of metal carbonates

Answer 1

The correct option is C Increase in greenhouse effect, thus raising the temperature

Unlike CO, $C{O}_2$ is not poisonous. But the increase in combustion of fossil fuels and decomposition of limestone for cement manufacture have increased the $C{O}_2$ content of the atmosphere. This may lead to increase in green house effect and thus, raise the temperature of the atmosphere.