Hydrogen is used in industry mainly for
AManufacture of ammonia by Haber process
BBleaching of cotton textiles regularly
CCooking of food in pressure cookers
DLighting up streetlights at night
Answer & Solution
Correct answer: A. Manufacture of ammonia by Haber process
1. The chapter section on uses lists industrial applications.
2. The Haber process uses N2 and H2 to make NH3.
3. Ammonia is the basis of fertilisers and many chemicals.
4. So option A is the major industrial use.
_Source: Selina Concise Chemistry Class 8, Ch on Hydrogen (Mistral OCR'd PDF), section on uses of hydrogen_
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