Question

Acidic hydrogen is present in:
1. acetylene
2. ethane
3. ethylene
4. dimethyl acetylene

Answer 1

In alkynes acidic hydrogen is

present.

Acetylene is the answer.

Answer 2

Answer:

The acidic hydrogen is found in 1. Acetylene.

Explanation:

The chemical structure of acetylene is:

$H-C \equiv C-H$

Acetylene is a gas of colorless which is used as fuel.

The acetylene has two acidic hydrogen atoms and triple bond is shared between two atoms of carbon which means there are three electrons between the carbon atoms. On comparing, the hydrogen and carbon, the carbon is more electronegative than the element hydrogen, so, the carbon eliminates the proton which makes the hydrogen acidic.