To synthesize the unsymmetrical alkyne C H_3 - C C - C H_2 - C H_… - Vidyadip

MCQ

To synthesize the unsymmetrical alkyne $C{H_3} - C \equiv C - C{H_2} - C{H_3}$ the reagents needed would be

A
Ethene, iodoethane, iodomethane and potassium hydroxide
B
Acetaldehyde, $1-$bromopropane and conc. ${H_2}S{O_4}$
C
$1, 2-$dichloroethane, $1-$propanol and alcoholic potassium hydroxide
✓
Ethyne, iodomethane, iodoethane and sodamide

✓

Answer

Correct option: D.

Ethyne, iodomethane, iodoethane and sodamide

d
(d) $CH\equiv CH\xrightarrow{NaN{{H}_{2}}}CH\equiv {{C}^{-}}N{{a}^{+}}\underset{-NaI}{\mathop{\xrightarrow{C{{H}_{3}}I}}}\,CH\equiv C-C{{H}_{3}}$

$\underset{\text{Pent}-\text{2}-\text{yne}}{\mathop{{{C}_{2}}{{H}_{5}}-C\equiv C-C{{H}_{3}}}}\,\underset{-NaI}{\mathop{\xleftarrow{{{C}_{2}}{{H}_{5}}I}}}\,N{{a}^{+}}\,{{C}^{-}}\equiv C-C{{H}_{3}}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 9. Hydricarbon→9. Hydricarbon — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Which of the following is$/$ are present as impurity in crude sodium chloride?

Lead is maximum in

What is the oxidation state of central atom in $\ce{Ca[PtCl_4]}\ ?$

Select the suitable reagent for above conversion.

A covalent bond between two atoms is formed by which of the following

Two elements whose electronegativities are $1.2$ and $3.0$ the bond formed between them would be

Which of the following does not represent major product of that reaction ?

In Bohr’s model, atomic radius of the first orbit is $\gamma $, the radius of the $3^{rd}$ orbit, is

How many electrons can fit in the orbital for which : $n = 3$ and $l = 1\ ?$

Which of the following is not an organic compound :