Chemistry
Grade-6
Easy
Question
Identify the houseplants for cleaning indoor air from the following:
(i) 
(ii) 
(iii) 
(iv) 
- Only (i) and (ii)
- Only (i) , (ii) and (iv)
- Only (i), (ii) and (iii)
- Only (i) and (iv)
Hint:
Flowering plants are not good air purifiers.
The correct answer is: Only (i) , (ii) and (iv)
The correct option is. b)Only (i) , (ii) and (iv)
Some houseplants can reduce indoor air pollutants such as formaldehyde. A well-known process in plants as photosynthesis, in which plants clean the air by absorbing carbon dioxide and releasing oxygen. Respiration is another process by which plants take in oxygen and give off carbon dioxide. Houseplants can clean the air of carcinogenic volatile organic compounds such as formaldehyde and benzene.
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