Fertiliser Technology - Chemical Engineering Questions and Answers

Fertiliser Technology

1: Tricresyl phosphate is chemically represented as

A. (CH₃ C₆H₄)₃ PO₄

B. Ca₁₀(PO₄)₃F₆

C. (NH₄)₂HPO₄

D. NH₄H₂PO₄

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2: Color of nitric acid is light yellow due to the presence of

A. NO

B. NO₂

C. N₂ H₅

D. NH₃

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3: 5-10-5 fertilisers mean that they contain

A. 5, 10, 5% respectively of N₂, P₂O₅ and K₂O.

B. only 5 to 10% active fertiliser constituents.

C. 5 to 10% filler & carrier of soil conditioners.

D. none of these.

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4: Nitric acid is produced on commercial scale in a fertiliser plant by

A. oxidation of ammonia.

B. CaNO₃ + H₂SO₄ reaction.

C. passing air through high voltage electric arc.

D. none of these.

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5: Phosphatic fertiliser is graded based on its __________ content.

A. P₂O₃

B. PCl₅

C. P₂O₅

D. H₃PO₄

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