1.

Assertion : Buna-S is a copolymer . Reason : Buna-S is formed by condensationreaction between two different monomers.

Answer»

If both ASSERTION and reason are trueand reason is the correct EXPLANATIONOF assertion .
If both assertion and reason are true but reason is not the correct explanationof assertion .
If assertion is true but reason is false.
If both assertion and reason are false.

Solution :Buna-S isformed by addition REACTION between two different monomerss , 1,3- butadiene and STYRENE .


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