End of unit questions
1. Circle the letter which shows the correct answer.
(i) Water is obtained from .......................................................
A rain B rocks C trees Dsand
(ii) ....................................................... dissolves in water.
A Leaf B Sand C Sugar D Pebble
(iii) Pure water remains colourless when we add ....................................................... to it.
A food colour B coee C milk D kitchen salt
(iv) .............................................. water is salty.
A Reservoir B River C Borehole D Sea
(v) Water from reservoirs is ltered to remove .................................... .
A dead leaves B soap C germs D chlorine
2. Complete the sentences using correct words from the given list.
solid drink no smell water vapour wastes rain gas
(i) We must ........................................ plenty of water every day.
(ii) We must not throw ........................................ in rivers.
(iii) Pure water has ........................................ .
(iv) Water is obtained from ........................................ .
(v) Ice is water in the ........................................ state.
(vi) ........................................ is water in the gas state.
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