Biofertilizers
Q60. In legume nodules, nitrogen fixation requires low oxygen despite active respiration. Which mechanism maintains this balance? [UP PGT Biology, 9 May…
Q60. In legume nodules, nitrogen fixation requires low oxygen despite active respiration. Which mechanism maintains this balance? [UP PGT Biology, 9 May…
Q60. Small differences accumulating among individuals over generations eventually produce new life forms. What does this illustrate? [RRB Group D, 12 August…
40. The scientific study of insects is called: [DSSSB Assistant Superintendent, 3 July 2026, Shift 2] (a) Botany (b) Ornithology (c) Ecology…
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…