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ChemistryJEE Main 22 Jan 2026, Shift 2·Q6·MCQ·Easy–moderate

Purification & Characterisation · Kjeldahl method nitrogen estimation

When 1 g of compound (X) is subjected to Kjeldahl's method for estimation of nitrogen, 15 mL, 1M HX2SOX4\ce{H2SO4} was neutralized by ammonia evolved. The percentage of nitrogen in compound (X) is :
  1. (1)21
  2. (2)0.42
  3. (3)42
  4. (4)0.21

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See the full 22 Jan 2026, Shift 2 paper