Q.

(A): Cis -2- butene has lower melting point than trans -2-butene
(B): Cis -2-butene and trans -2-butene are having same empirical formulae.
 

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a

(A) is false but (R) is true

b

Both (A) and (R) are true and (R) is the correct explanation of (A)

c

Both (A) and (R) are true and (R) is not the correct explanation of (A)    

d

(A) is true but (R) is false

answer is B.

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Detailed Solution

In trans isomer molecules are held tightly in crystal lattice due to its molecular symmetry

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