Frank solutions for केमिस्ट्री पार्ट २ अंग्रेजी] कक्षा १० आईएससी chapter 9D - Unsaturated Hydrocarbons: Alkynes [Latest edition]

Chemical formula of Westrosol is ______.

On adding bromine water to ethyne, the orange colour of bromine disappears due to the formation of ______.

Name the organic compound prepared by the following reaction:

\[\begin{array}{cc}
\ce{CH2Br}\\
\phantom{...............}| + \ce{\underset{(alc{.})}{2KOH}->}\\
\ce{CH2Br}\\
\end{array}\]

Name the organic compound prepared by the following reaction:

\[\ce{HC ≡ CH ->[+H2][Ni]}\]

Name the organic compound prepared by the following reaction:

\[\ce{CH ≡ CH + H2O [O] ->[HgSO4][H2SO4]}\]

Explain the following:
 Ethene and ethyne burn with sooty luminous flame

Explain the following:

Ethane does not undergo addition reactions

Explain the following:

Ethyne is used for welding and cutting metals

Give the names of the first four members of the homologous series of
alkynes.

How is ethyne prepared in the laboratory?

What is meant by an addition reaction?

How are addition reactions of ethene different from ethyne?

Write the equations to show what happens when ethyne gas reacts with
Bromine water

Write the equations to show what happens when ethyne gas reacts with

Excess of hydrochloric acid

How will you convert
Ethyne to ethane

How will you convert

 Ethyne to acetaldehyde

Give two chemical tests to distinguish between ethane and ethyne .

Give three points to differentiate between saturated and unsaturated
hydrocarbons.

Write the structural formulae and IUPAC name of the second and third
homologues.

Give the reactions of ethyne with Hydrogen

Give the reactions of ethyne with Water.

Give the reactions of ethyne with  Bromine.

Write three uses of ethyne.

Write chemical tests to distinguish between ethane, ethene and ethyne.

 Write a balanced chemical equation for the preparation of : 
Ethyne using calcium carbide

Name the following organic compound:

The compound formed by complete chlorination of ethyne.