October 2026

Q60. In legume nodules, nitrogen fixation requires low oxygen despite active respiration. Which mechanism maintains this balance? [UP PGT Biology, 9 May …

60. What is the term for different forms of the same gene? [DSSSB Assistant Superintendent, 6 July 2026 (Shift 2)] (a) Chromosomes …

Q60. In which of the following processes is active transport NOT used? [UPSC CDS (II), General Knowledge 2026] (a) Reabsorption of amino …

175. An organism has many cells, no cell wall and depends on other organisms for nutrition. Which kingdom fits it? [RRB Group …

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 …