Reason (R): The higher melting point of p-isomer is due to its symmetry which leads to more close packing of its molecules in the crystal and subsequently p-isomer have strong intermolecular attractive forces.
A. both (A. and (R) are correct and (R) is the correct explanation of(A).
B. Both (A) and (R) are correct but (R) is not the correct explanation of(A).
C. (A) is correct but (R) is wrong.
D. (A) is wrong but (R) is correct.
Answer:A
Reason (R): The higher melting point of p-isomer is due to its symmetry which leads to more close packing of its molecules in the crystal and subsequently p-isomer have strong intermolecular attractive forces.
A. both (A. and (R) are correct and (R) is the correct explanation of(A). B. Both (A) and (R) are correct but (R) is not the correct explanation of(A). C. (A) is correct but (R) is wrong. D. (A) is wrong but (R) is correct.