61. What is the International Date Line? A. It is the equator B. It is the 0° longitude C. It is the 90° east longitude D. It is the 180° longitude ✅ The correct answer is option D.
62. Which oneofgreenhouse gas? (1) Oxygen(2) Nitrogen(3) Carbon-dioxide(4) OzoneQ.45) Biggest planet of solar system is – A. Earth B. Mars C. Saturn D. Jupiter ✅ The correct answer is option D.
63. Daily weather changes in the atmosphere are associated with – A. Troposphere B. Mesosphere C. Ionosphere D. Stratosphere ✅ The correct answer is option A.
64. Laterite soil develops as a result of : A. deposits of alluvial B. deposits of loess C. leaching D. continued vegetation cover ✅ The correct answer is option C.
65. Which one of the following represent the lines joining the places of equal rainfall? A. Isohypses B. Isohalines C. Isobars D. Isohyets ✅ The correct answer is option D.
66. Which is the lowest layer of the atmosphere? A. Troposphere B. Stratosphere C. Mesosphere D. Thermosphere ✅ The correct answer is option A.
67. The significant quantity of upper soil is formed by – A. Igneous rock B. Sedimentary rock C. Metamorphic rock D. Biological degradation ✅ The correct answer is option B.
68. Typhoons are common in the – A. Arctic Ocean B. Seas of China and Japan C. Mexican Gulf D. Indian Ocean ✅ The correct answer is option B.
69. Precipitation in the form of a mixture of rain and snow is called – A. Drizzle B. Hail C. Sleet D. Snow ✅ The correct answer is option C.
70. Which one of the four regions above the earth has smallest height (km.)? A. Stratosphere B. Mesosphere C. Thermosphere D. Troposphere ✅ The correct answer is option D.