Question

One of the following organic compounds cannot decolourise the red-brown colour bromine water. This compound is:
(a) C₁₄H₂₈
(b) C₁₄H₂₈
(c) C₁₄H₂₈
(d) C₁₄H₂₈

Answer 1

C_​6H₁₄
C₆H₁₄ is an alkane as its formula can be expressed as C_nH_2n+2. Alkanes are stable and cannot decolourize reddish-brown bromine water in the absence of a catalyst.