The use of materials of lead in roofing and in water pipes is being discouraged. State (i)Two reasons why these materials have been used in the past. (ii)One...

      

The use of materials of lead in roofing and in water pipes is being discouraged.
State
(i)Two reasons why these materials have been used in the past.
(ii)One reason why their use is being discouraged.

  

Answers

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(i)lead does not react with water and air.
(ii)Lead is a heavy metal which has adverse effects on the environment.

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Belan answered the question on February 13, 2019 at 12:05

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