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Chemical Technology
Inorganic Chemical Industries
GATE 2015
Medium

Match the chemical with its raw materials. I-SSP, II-TSP, III-DAP, IV-Caustic soda. P-Rock phosphate+Sulfuric Acid+Ammonia, Q-Brine, R-Rock phosphate+Sulfuric Acid, S-Rock phosphate+Phosphoric Acid. The correct combination is

  • AI-Q, II-R, III-S, IV-P
  • BI-S, II-P, III-Q, IV-R
  • I-R, II-S, III-P, IV-Q
  • DI-S, II-R, III-P, IV-Q

Explanation

SSP: rock phosphate + sulfuric acid (R). TSP: rock phosphate + phosphoric acid (S). DAP: rock phosphate + sulfuric acid + ammonia (P). Caustic soda: from brine electrolysis (Q).

Source: GATE CH 2015 (2015)

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