Question

*choose the correct option *

1)Air pollutant ________causes irritation of respiratory tract and lungs.
(Oxide of sulphur, oxide of nitrogen, oxide of carbon)

2)An Iron Pillar in Delhi, made about 1500 years ago is still there because it is mady from __________ .
( gold, analloy, silver )​

Answer 1

Answer:

2. an alloy

l.oxide of Sulphur

Answer 2

Answer:

1. oxide of carbon

___________________

2. an alloy

__________________

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