Basic General Knowledge
Nowadays many novel chemicals are being synthesized termed as xenobiotics. The unique feature of these is what they are I.biodegradable II.non- biodegradable III.pose on environmental threat IV.they are environment friendly

II, III, IV
II, III
I, III
I, III, IV

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Basic General Knowledge
What was the purpose of establishment of NATO?

To maintain and develop individual and collective capacity to resist armed attack
To defend economic and trade interests of the developing nations of the world
None of these
TO provide collective defence and economic cooperation in south-east Asia

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