261. The temperature increases rapidly after September 19, 2025 by Admin A. ionosphere B. exosphere C. stratosphere D. troposphere ✅ The correct answer is option A.
262. The main percentage of the volume of water in the hydrosphere is in September 19, 2025 by Admin A. oceans and seas B. groundwater, rivers and streams C. glaciers and ice sheets D. freshwater lakes and water vapours ✅ The correct answer is option A.
263. The smallest glaciers are September 19, 2025 by Admin A. mountain or alpine glaciers B. continental glaciers C. piedmont glaciers D. None of the above ✅ The correct answer is option A.
264. The slow down slope movement of soil and sediment because of frost heaving and thawing is called September 19, 2025 by Admin A. solifluction B. gelifluction C. frost creep D. rockfall ✅ The correct answer is option C.
265. The subatomic particles arriving from outer space having high energy are called September 19, 2025 by Admin A. protons B. electrons C. cosmic rays D. None of the above ✅ The correct answer is option C.
266. The river Sutlej, on which the Bhakra Dam has been built, originates from September 19, 2025 by Admin A. a spring in Vering B. near Bara Lacha Pass in Lahul C. Rakas lake in Tibet D. Mansarovar lake ✅ The correct answer is option C.
267. The major control over the form of the developing slope is exerted by September 19, 2025 by Admin A. inputs to the hill slope B. outputs from the hill slope C. balance between inputs and outputs from the hill slope system D. None of the above ✅ The correct answer is option C.
268. The major crops found in Sudan are September 19, 2025 by Admin A. rice, barley, bananas, cocoa B. maize, cotton, bananas, groundnut C. bajra, oats, tobacco D. wool, wine, jute ✅ The correct answer is option B.
269. The longest era of the classification of the history of earth is September 19, 2025 by Admin A. Cainozoic era B. Pre-Cambrian era C. Palaeozoic era D. Mesozoic era ✅ The correct answer is option B.
270. The time interval from when the given star passes directly overhead to when it next passed directly overhead, is defined as September 19, 2025 by Admin A. one sidereal day B. one solar day C. both the terms are similar, so any of these may be used D. None of the above ✅ The correct answer is option A.