135. (v15-102-10) Dibromaikanga oyuvchi kaliyning spirtdagi eritmasi tasir ettirilganda
71,4 g kaliy bromid olindi. Agar dastlabki dibromalkanning hosil bolgan alkindan massa farqi 70,2 g ga teng bolsa, alkinni toping, (q = 75%)
A)C5H8 B)C2H2 C)C4H6 D)C3H4