Change set

Pick exam & year, then Go.

Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q84 (NDA-I/2026) Science & Technology › Basic Science (Physics, Chemistry, Biology)

Which of the following statements is/are correct with regard to Nitrolim?

I. It is prepared by heating calcium carbide with nitrogen.
II. It decomposes into ammonia in soil.
III. It is an NPK fertilizer.
IV. It is an organic fertilizer.

Select the answer using the code given below.

Result
Your answer: —  Â·  Correct: A

Explanation

Nitrolim is a nitrogenous fertilizer consisting of a mixture of calcium cyanamide (CaCN2) and carbon (C). Statement I is correct: It is prepared industrially by heating calcium carbide (CaC2) with nitrogen gas (N2) at high temperatures (around 1000-1100°C). Statement II is correct: In the soil, it reacts with moisture to form cyanamide, which then hydrolyzes to urea and eventually decomposes into ammonia (NH3), which is then converted into nitrates for plant uptake. Statement III is incorrect: It is a nitrogen-only fertilizer and does not contain phosphorus (P) or potassium (K), which are required for NPK classification. Statement IV is incorrect: Calcium cyanamide is classified as an inorganic synthetic fertilizer. While it contains carbon, it is an inorganic salt of the cyanamide anion, unlike urea which is a synthetic organic compound.

How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
50%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

CDS-I · 2023 · Q20 Relevance score: 0.26

Which of the following statements with regard to heating of lead nitrate powder over a flame are correct? 1. Brown fumes of NO2 are released. 2. Colourless O2 gas is released. 3. It is an example of oxidation reaction. 4. It is an example of thermal decomposition used for the production of NO2 gas. Select the correct answer using the code given below.

CAPF · 2025 · Q103 Relevance score: -0.49

Consider the following statements: 1. The circulation of nitrogen from the inorganic compounds in the soil to form protein in plants and animals and back again is known as the nitrogen cycle. 2. The preparation of ammonia by Haber process is an endothermic reaction. 3. Urea is synthetically made by the action of ammonia and carbon dioxide under high temperature and high pressure. Which of the statements given above is/are **not** correct?

NDA-I · 2008 · Q19 Relevance score: -0.52

What is the composition of Nitrolim-a chemical fertilizer?

NDA-I · 2022 · Q39 Relevance score: -1.13

Which one of the following statements about fertilizers is not correct?

NDA-I · 2015 · Q3 Relevance score: -1.54

Statement I : Colour of nitrogen dioxide changes to colourless at low temperature. Statement I : At low temperature Nitrogen tetroxide (N204) is formed which is colourless.