One of the following organic compounds cannot decolourise the red-brown colour bromine water. This compound is:

(a) C₁₄H₂₈
(b) C₇H₁₂
(c) C₆H₁₄
(d) C₉H₁₆

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Solution

(c) C₆H₁₄
C₆H₁₄is 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.

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One of the following organic compounds cannot decolourise the red-brown colour of bromine water. This compound is :

(a) $C_{14} H_{28}$ (b) $C_{7} H_{12}$ (c) $C_{6} H_{14}$ (d) $C_{9} H_{16}$

C C l_{4}

Which of the following hydrocarbons can decolourise bromine water and which cannot? Why?

$C_{6} H_{12}, C_{6} H_{14}, C_{6} H_{10}$

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