Question:
Which fraction obtained from coal tar distillation is mainly used for road surfacing?
Which fraction obtained from coal tar distillation is mainly used for road surfacing?
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Shortcut: Road surfacing from coal tar products usually uses heavy residue = Pitch.
Updated On: Jun 9, 2026
- Light oil
- Middle oil
- Anthracene oil
- Pitch
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Concept:
Coal tar is separated into fractions by distillation. The heavy residue called pitch is widely used for paving and road surfacing.
Step 1:
Coal tar contains many hydrocarbons that are separated according to boiling range.
Step 2:
Light oil and middle oil are more volatile fractions used for chemicals and solvents.
Step 3:
Pitch is the thick black residue remaining after removal of lighter fractions.
Step 4:
Pitch has adhesive and waterproofing properties, making it suitable for road surfacing.
Step 5:
Therefore, the correct option is pitch.
Coal tar is separated into fractions by distillation. The heavy residue called pitch is widely used for paving and road surfacing.
Step 1:
Coal tar contains many hydrocarbons that are separated according to boiling range.
Step 2:
Light oil and middle oil are more volatile fractions used for chemicals and solvents.
Step 3:
Pitch is the thick black residue remaining after removal of lighter fractions.
Step 4:
Pitch has adhesive and waterproofing properties, making it suitable for road surfacing.
Step 5:
Therefore, the correct option is pitch.
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