296: Match List-I (Minerals) with List-II (Location) and select the correct answer using the codes given below the Lists:
List-I List-II
(Minerals) (Location)
A. Coal 1. Giridih
B. Copper 2. Jayamkondam
C. Manganese 3. Alwar
D. Lignite 4. Dharwar
Codes:
A B C D
(a) 1 4 3 2
(b) 2 3 4 1
(c) 1 3 4 2
(d) 2 4 3 1
297: The graph given below shows the mean average monthly temperatures (in Degree C) and mean monthly rainful (in cms) of a place :
The graph is indicative of which one of the climatic zones of the world ?
(a) Wet & dry tropical
(b) Rainy tropical
(c) Semi-arid tropical
(d) Temperate marine
Explanation:
As the graph indicates average temperature range 15-25 degree C and average rainfall range also 15-25 cm not exceeding 30 cm and heaviest rainfall in May, June months, it is wet and dry tropical climate zone of the world.
298: The hallmark of watershed development in the semi-arid regions of India is the
(a) establishment of sheds on large scale, so that the rain water does not evaporate
(b) undertaking of earthworks, soil conservation measures and tree plantation, so as to conserve soil moisture and recharge underground water
(c) drilling deep tubewells so as to tap water at the rock-strata level
(d) setting up a system of tanks by banking water from seasonal rivers
299: The rising of evening star Venus indicates:
(a) South pole
(b) North pole
(c) East
(d) West
300: When you travel in certain parts of India, you will notice red soil. What is the main reason for this colour ?
(a) Abundance of magnesium
(b) Abundance of phosphates
(c) Presence of ferric-oxides
(d) Accumulated humus
Explanation:
Red soil is formed as a result of the wearing down of the old crystalline rocks. It is less clayey and more of a sandy nature and has a rich content of iron and small Humus content. Red soil is poor in nitrogen, phosphorus and lime. Reddish color of red soil is due to wide diffusion of iron.