The tides in the sea are primarily due to

(1) the atmospheric effect of the Earth

(2) the gravitational effect of Venus on the Earth

(3) the gravitational effect of the Sun on the Earth

(4) the gravitational effect of the Moon on the Earth

A stretch of seawater, partly or fully separated by a narrow strip from the main sea is called

(1) Bay

(2) Isthmus

(3) Lagoon

(4) Strait

Laterite soil develops as a result of :

(1) deposits of alluvial

(2) deposits of loess

(3) leaching

(4) continued vegetation cover

The soil water which is of the greatest importance to plant life is

(1) Gravitational water

(2) Capillary water

(3) Hygroscopic water

(4) Combined water

The color of loamy soil is

(1) Greenish brown

(2) Bluish green

(3) Yellowish-brown

(4) Blackish brown

Laterite soils are found in areas where–

(1) normal temperature and rainfall is less

(2) temperature is high and rainfall is heavy

(3) temperature is low and rainfall is nominal

(4) temperature is high and rainfall is normal

The soil conservation method in which mountain slope is cut into steps is

(1) Contour ploughing

(2) Cover planting

(3) Strip cropping

(4) Terracing

For the cultivation of Tobacco, the soil should be rich in

(1) calcareous matter

(2) nitrogen

(3) organic content

(4) potash

Which of the following types of soil is best suited for cotton cultivation?

(1) Black

(2) Red

(3) Laterite

(4) Mountain

The soil which originates under tall-grass prairie vegetation is called

(1) Black soils

(2) Chestnut soils

(3) Chernozem soils

(4) Terra rosa soils

Mountain soil contains a lot of—

(1) humus

(2) clay

(3) coase material

(4) iron and aluminium salt