Fertilizers
Q35. Which two elements are primarily added to soil by green manure? [RRB JE CBT 1 (20 February 2026, Shift 1)] (A)…
Q35. Which two elements are primarily added to soil by green manure? [RRB JE CBT 1 (20 February 2026, Shift 1)] (A)…
35. What happens to soap molecules when they are added to water? [RRB Group D (2025 recruitment cycle), Shift 3 — 25…
Q50. A packet of potato chips is filled with nitrogen gas before sealing. What is the main reason for using nitrogen in…
The collection includes hydrocarbons, alcohols, polymers, organic acids, explosive substances, fuels, and related organic chemistry topics. 280. Unsaturated hydrocarbons usually produce: [RRB…
Non-metals: Carbon and its forms, Hydrogen and its compounds, Sulphur, Nitrogen, Halogens, Inert Gases, and Acids, Bases and Salts. 180. When hydrochloric…
Q80. Which of the following is NOT one of the belts of iron ore deposits in India? [SSC Selection Post (Graduate Level),…
Q35. Which chemical weathering process occurs when atmospheric or soil carbon dioxide dissolves in water? [RRB NTPC Graduate Level CBT-II, 10 July…
50. Which of the following is NOT an example of a colloid? [RRB Group D, 25 Aug 2026, Shift 2] (A) Milk…
50. Which of the following phenomena is explained by Bohr’s model? [RRB Group D — 14 Aug 2026, Shift 1] (A) Rutherford…