When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of
A. oxygen
B. carbon dioxide
C. nitrogen
D. water vapour
Answer:B
When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of
A. oxygen B. carbon dioxide C. nitrogen D. water vapour
Explanation: Carbon dioxide reacts with lime water to convert it to milky.