A. Estuary
B. Delta
C. Gulf
D. Bay
✅ The correct answer is option A.
20. The deepest ocean of the world is –
A. Atlantic Ocean
B. Arctic Ocean
C. Indian Ocean
D. Pacific Ocean
✅ The correct answer is option D.
19. Mountain soil contains a lot of—
A. humus
B. clay
C. coase material
D. iron and aluminium salt
✅ The correct answer is option A.
18. Which of the following methods does not help in conserving soil fertility and moisture?
A. Contour ploughing
B. Dry farming
C. Strip cropping
D. Shifting agriculture
✅ The correct answer is option D.
17. Source of energy in ecosystem is –
A. Sun
B. Green plants
C. Sugar produced in photosynthesis
D. ATP
✅ The correct answer is option A.
15. Which one is not a non-conventional energy source?
A. Nuclear energy
B. Solar Energy
C. Wind energy
D. Tidal power
✅ The correct answer is option A.
13. Day and Night are equal at the:
A. Prime Meridian
B. Antarctic
C. Poles
D. Eqator
✅ The correct answer is option D.
11. Which planet orbits closest to the earth?
A. Mars
B. Jupiter
C. Venus
D. Mercury
✅ The correct answer is option C.
9. Solar energy is received by the earth through –
A. conduction
B. radiation
C. convection
D. refraction
✅ The correct answer is option B.
3. Brightest planet in our solar system is –
A. Venus
B. Mercury
C. Mars
D. Jupiter
✅ The correct answer is option A.