1.

(A) 'Ar' is used for arc welding of metals or alloys.(R) Ar provides an inert atmosphere for metal (or) alloys during arc welding

Answer»

Both (A) and (R) are TRUE and (R) is the CORRECT EXPLANATION of (A)
Both (A) and (R) are true and (R) is not the correct explanation of (A)
(A) is true but (R) is false
Both (A) and (R) are false

Answer :A


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