JEE Main Chemistry question

Which involves a bond-forming process?

(A)Stretching rubber
(B)Dissolution of sugar in water
(C)Rusting of ironCorrect
(D)Emission of -rays by radioactive iron

Answer: (C)

Solution

Rusting of iron is a chemical process in which iron reacts with oxygen to form new chemical bonds in iron(III) oxide: . Stretching rubber is a purely physical/mechanical process involving no bond

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Question ID VK-133419