A. Contour ploughing
B. Using farm manure
C. Tree plantation/Afforestaion
D. Crop rotation
✅ The correct answer is option C.
111. Which type of lake is formed by volcanic activities?
A. Lagoon
B. Fresh water lake
C. Cladera lake
D. Karst lake
✅ The correct answer is option C.
94. What is meant by the term mid-night sun?
A. Twilight
B. Rising Sun
C. Very bright moon
D. Sun shining in the polar circle for long time
✅ The correct answer is option D.
92. What is the mean temperature of Earth?
A. 6 degree Celsius
B. 16 degree Celsius
C. 26 degree Celsius
D. 36 degree Celsius
✅ The correct answer is option B.
90. The outermost layer of sun is called –
A. Lithosphere
B. Chromosphere
C. Photosphere
D. Corona
✅ The correct answer is option D.
88. On which date is India likely to experience the shortest day?
A. December 22
B. March 21
C. June 22
D. September 23
✅ The correct answer is option A.
86. The planet that takes 88 days to make one revolution of the sun is –
A. Mercury
B. Saturn
C. Jupiter
D. Mars
✅ The correct answer is option A.
85. ‘Super nova’ is –
A. a comet
B. an asteroid
C. an exploding Star
D. a black hole
✅ The correct answer is option C.
84. Which is the coldest among the following?
A. Mars
B. Earth
C. Pluto
D. Mercury
✅ The correct answer is option C.
83. The minimum short-term natural hazard is –
A. blizzard
B. earthquake
C. volcanic eruption
D. bolt of lightning
✅ The correct answer is option D.