Which of the following is a way to use water economically?
(a) Construction of bawris
(b) Rainwater harvesting
(c) Drip irrigation
(d) Infiltration
A man digging the ground near a water body found that the
soil was moist. As he kept digging deeper and deeper he reached
a level where all the spaces between particles of soil and gaps
between rocks were filled with water. The upper limit of this
layer is called
(a) water level.
(b) water table.
(c) ground water.
(d) water limit.
Which of the following are not the liquid forms of water?
(i) Snow
(ii) Lake water
(iii) River water
(iv) Water vapour
(v) Ice
Choose the correct combination from the options below.
(a) (i), (iv) and (v) (b) (i) and (ii)
(c) (ii) and (iii) (d) (iv) only
Seas and oceans are full of water on earth. However, a very
small percentage of water present on earth is available for us.
This percentage is roughly
(a) 0.006%.
(b) 0.06%.
(c) 0.6%.
(d) 6%.
In what ways can changes in social structure lead to changes in the family
structure?
What are some of the different forms that the family can take?
What are the factors behind the assertion of tribal identities today?
What evidence would you offer against the view that ‘tribes are primitive
communities living isolated lives untouched by civilisation’?
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