JEE Main Chemistry question

Not in JEE Main or NEET syllabus

The conversion of atomic hydrogen into ordinary hydrogen is:

(A)Exothermic changeCorrect
(B)Endothermic change
(C)Nuclear change
(D)Photochemical change

Answer: (A)

Solution

Formation of molecular hydrogen from free hydrogen atoms, , involves bond formation and releases energy (it is the exact reverse of the endothermic dissociation $H_2 →

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Question ID VK-137295