Assertion: For welding purpose a mixture of oxyge

STUDY MATERIALS
COURSES
MORE
SUCCESS STORY
ADMISSION
STORE

Back

JEE ADVANCE

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

JEE MAIN

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

NEET

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

BITSAT

CLASS XI - XII

CLASS XI - XII

CBSE BOARD

CLASS IX

CLASS X

CLASS XI

CLASS XII

CLASS VI

CLASS VII

CLASS VIII

UP BOARD

CLASS IX
CLASS X
CLASS XI
CLASS XII

CLASS IX

CLASS X

CLASS XI

CLASS XII

CUET

CRASH COURSE

CRASH COURSE

Courses

CLASSROOM COURSES
ONLINE COURSES

ONLINE COURSES

Q.
Assertion: For welding purpose a mixture of oxygen and ethyne is used.

Reason: Ethyne when burnt in air gives smoky flame.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.

2 Both assertion and reason are correct, but reason is not the correct explanation of assertion.

3 Assertion is true, but reason is false.

4 Assertion is false, but reason is true.

Ans.
(3)

When ethyne is burnt in air, due to incomplete combustion it gives a sooty flame. But when ethyne is burnt with oxygen, it gives a clean flame with temperature of 3000°C.

Solution

Q.
Assertion: For welding purpose a mixture of oxygen and ethyne is used.

Reason: Ethyne when burnt in air gives smoky flame.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.

2 Both assertion and reason are correct, but reason is not the correct explanation of assertion.

3 Assertion is true, but reason is false.

4 Assertion is false, but reason is true.

Ans.
(3)

When ethyne is burnt in air, due to incomplete combustion it gives a sooty flame. But when ethyne is burnt with oxygen, it gives a clean flame with temperature of 3000°C.

Want Us to Email you About Special Offers & Updates?

Solution

Q. Assertion: For welding purpose a mixture of oxygen and ethyne is used. Reason: Ethyne when burnt in air gives smoky flame.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.

2 Both assertion and reason are correct, but reason is not the correct explanation of assertion.

3 Assertion is true, but reason is false.

4 Assertion is false, but reason is true.

Ans. (3) When ethyne is burnt in air, due to incomplete combustion it gives a sooty flame. But when ethyne is burnt with oxygen, it gives a clean flame with temperature of 3000°C.

Want Us to Email you About Special Offers & Updates?

Q.
Assertion: For welding purpose a mixture of oxygen and ethyne is used.

Reason: Ethyne when burnt in air gives smoky flame.

Ans.
(3)

When ethyne is burnt in air, due to incomplete combustion it gives a sooty flame. But when ethyne is burnt with oxygen, it gives a clean flame with temperature of 3000°C.