Question

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Two major components of gas welding are flame and temperature. Reason (R): In welded metal, the joint should ideally not be visible. In the light of the above statements, choose the most appropriate answer from the options given below:

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• C. (A) is correct but (R) is not correct
• D. (A) is not correct but (R) is correct

Hint:

Logic Tip: Assertion-Reason questions require checking not only truth, but also whether the Reason logically explains the Assertion.

Answer 1

The Correct Option is B

Concept:
Gas welding is an important metal joining technique widely used in sculpture, engineering, fabrication, and industrial work. It uses heat generated by gas flames to melt and join metal pieces.

Step 1:
Gas welding mainly depends upon:
• Flame control
• Proper temperature The welding flame produces the heat necessary to:
• Melt metal edges
• Fuse materials together
• Create strong joints Thus, flame and temperature are indeed two major components of gas welding. Therefore: \[ Assertion (A) is correct \]

Step 2:
In good welding practice:
• Weld joints should appear smooth
• Connections should ideally blend with the surface
• Visible defects weaken appearance and strength Especially in sculpture and fabrication, artists often try to hide or refine joints for aesthetic quality. Therefore: \[ Reason (R) is also correct \]

Step 3:
Although both statements are true:
• The invisibility of the welded joint does not explain why flame and temperature are major components of gas welding.
• Assertion discusses welding mechanics.
• Reason discusses finishing quality and appearance. Hence: \[ Reason is not the correct explanation of Assertion \]

Step 4:
Since both statements are correct but the Reason does not explain the Assertion, the correct answer is: \[ \boxed{\text{(2) Both (A) and (R) are correct but (R) is not the correct explanation of (A)}} \]