251. The oldest rocks found in ocean basins are ____ than the oldest continental rocks. A. older B. younger C. larger D. smaller ✅ The correct answer is option B.
252. The smallest annual temperature range occurs in the A. equatorial tropical climate zone B. subtropical climate zone C. temperate climate zone D. polar climate zone ✅ The correct answer is option A.
253. The longest day (shortest night) in the southern hemisphere is A. Jun-21 B. Dec-22 C. Jul-21 D. Nov-22 ✅ The correct answer is option B.
254. The longest river in the Common wealth of independent states is the A. Irtysh river B. Ob river C. Yenisei river D. Volga river ✅ The correct answer is option D.
255. The periodic rise and fall of the sea level on the earth, gives rise to tides. This is related to A. the position of the moon with reference to the earth and the gravitational pull exerted mainly by the moon and partly by the sun B. infrared rays from the sun C. ultraviolet rays from the sun D. None of the above ✅ The correct answer is option A.
256. The second largest island (next to Greenland) in the world is A. Borneo B. Malagasy C. New Guinea D. Sumatra ✅ The correct answer is option C.
257. The process of destruction or dying of fronts is called A. fromtogenesis B. frontolysis C. both (a) and (b) D. None of the above ✅ The correct answer is option B.
258. The river Jordan drains into the A. Dead Sea B. Adriatic Garden C. Gulf of Suez D. Resaca Garden ✅ The correct answer is option A.
259. The Palaeozoic era contains ____ time periods. A. six B. four C. five D. seven ✅ The correct answer is option A.
260. The percentage of the incident radiation reflected back to space is called A. planet’s albedo B. earth’s albedo C. both are similar terms D. None of the above ✅ The correct answer is option A.