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

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

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Basic General Knowledge
What is the function of a dynamo?

To convert heat energy into light energy
To convert light energy into heat energy
To convert mechanical energy into electrical energy
To convert electrical energy into mechanical energy

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