Which of the following statements is incorrect?
(a) Suspended particulate matter can lead to respiratory problems like bronchitis
and asthma.
(b) Chlorine purifies water by killing harmful microorganisms and germs in it.
(c) CNG is called a cleaner fuel as it burns completely.
(d) DDT is a biodegradable compound which is metabolized within the
organism’s body.
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Answer:
option C is true . cng is an ideal fuel so it burns completely
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