21. A place where there is constant intermingling of salt water and fresh water is.
A. Estuary
B. Delta
C. Gulf
D. Bay
✅ The correct answer is option A.
Physical Geography
22. Atoll is a kind of –
A. sand-dune
B. lake
C. sandbar
D. inland sea
✅ The correct answer is option D.
23. Waves approaching the shore is known as –
A. Swash
B. Tsunami
C. Currents
D. Tide
✅ The correct answer is option B.
24. For the cultivation of Tobacco the soil should be rich in –
A. calcareous matter
B. nitrogen
C. organic content
D. potash
✅ The correct answer is option D.
25. The soil conservation method in which mountain slope is cut into step is –
A. Contour ploughing
B. Cover planting
C. Strip cropping
D. Terracing
✅ The correct answer is option D.
26. A special type of well in which water rises automatically under the pressure of a column of water to the ground surface through a hole is known as –
A. Artisian well
B. Spring
C. Hot spring
D. Geyser
✅ The correct answer is option A.
27. The sea bed sloping gradually and bordering the continent is known as:
A. Coast
B. Continental Shelf
C. Continental Platform.
D. Continental Slope.
✅ The correct answer is option B.
28. The coral reefs are the marine counterparts of –
A. Temperate forests
B. Tropical rain forests
C. Savannahs
D. Scrubland
✅ The correct answer is option B.
29. Sea breeze is formed during –
A. Day time
B. Night time
C. Both
D. Seasonal
✅ The correct answer is option A.
30. The eastward continuation of the Brazil current is called:
A. South Atlantic drift
B. Counter Equatorial drift
C. West Atlantic drift
D. North Atlantic drift
✅ The correct answer is option A.