Which of the following is not used to disting | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Ethene is an alkene $(C_2H_4)$ and ethane is an alkane $(C_2H_6)$.$A.$ Iodine in $CCl_4$ is generally not used for unsaturation tests because the

Vedclass · Accepted Answer

Iodine in $CCl_4$

Vedclass · Answer

(A) Ethene is an alkene $(C_2H_4)$ and ethane is an alkane $(C_2H_6)$.$A.$ Iodine in $CCl_4$ is generally not used for unsaturation tests because the reaction is reversible and slow.$B.$ Bromine in $CCl_4$ (Bromine water test) is used to distinguish alkenes from alkanes. Alkenes decolorize the reddish-brown color of bromine,while alkanes do not.$C.$ Alkaline $KMnO_4$ (Baeyer's reagent) is used to distinguish alkenes from alkanes. Alkenes decolorize the purple color of $KMnO_4$ to form a brown precipitate of $MnO_2$,while alkanes do not react.$D.$ Ammoniacal $Cu_2Cl_2$ (Cuprous chloride) is used specifically to identify terminal alkynes (forming red precipitates of copper acetylides). It does not react with ethene or ethane.Since both $A$ and $D$ are not used to distinguish ethene from ethane,but $D$ is a specific reagent for terminal alkynes,$A$ is the most appropriate choice in the context of standard laboratory tests for unsaturation where iodine is ineffective.

Which of the following is not used to distinguish ethene from ethane?

Similar Questions

The octane number can be improved by $...............$.

In the following reactions:
$1.$ Compound $X$ is
$2.$ The major compound $Y$ is
Give the answer for question $1$ and $2.$

The product $(A)$ is

Complete oxidation of hydrocarbons always produces........... as products.

Consider the following reaction sequence:
$C_6H_5CH=CH_2$ $\xrightarrow{Br_2} A$ $\xrightarrow{KMnO_4} B$
Compound $A$ and $B$ respectively are:

Vedclass Test Series

Exam Paper Generator

Online Exam Module