wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A mixture of oxygen and ethyne is burnt for welding. Why a mixture of ethyne and air is not used?

A
ethene can not burn in air
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
incomplete combustion takes place
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
ethene burn in air with explosion
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
none of these
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B incomplete combustion takes place
When ethyne is burnt in air incomplete burning takes place and produce sooty flame due to limited supply oxygen present in the air.

However, if ethyne is burnt in oxygen, it gives a clean flame with high temperature (3000°C ) due to complete combustion of ethyne.

Hence, This oxy-acetylene flame is used for welding and it is not possible to attain such a high temperature with air. Due this reason a mixture of ethyne and air is not used for welding.

flag
Suggest Corrections
thumbs-up
4
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Alkynes - Introduction
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon