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WorksheetsWater
Total questions: 20
Worksheet time: 10mins
Potable water is
transparent.
transparent and colourless.
transparent, colourless and has taste.
transparent, colourless, has taste and is free from germs.
Water used for chemical reactions in a laboratory is purified by ____.
Polluted water can cause ______________.
malaria
diarrhoea
cancer
heart disease
Water is called _______.
universal solvent
universal solute
universal solution
all of these
Vitreous membrane in the human eye contains _____ water.
2%
34%
56%
99%
What does the picture represent?
Evaporation
Condensation
Water cycle
Precipitation
Which is an example of gaseous state of matter?
Water vapour
Hail
Snow
Dew
The gases that cause acid rain are _____________.
oxygen and carbon dioxide
nitrogen dioxide and sulphur dioxide
noble gases and sulphur dioxide
oxygen and sulphur dioxide
What can you infer from picture shown here?
Water is needed for plants.
Plants need warmth.
Plants release water vapour.
Indoor plants should be covered.
One litre of sea water contains _____ of dissolved salts.
24 g
26 g
29 g
30 g
Arrange the four stages of removal of suspended impurities in the correct order.
(ii) 🡪 (iii) 🡪(iv) 🡪(i)
(iii) 🡪(ii) 🡪(iv) 🡪(i)
(iv) 🡪(i) 🡪(iii) 🡪(ii)
(i) 🡪(ii) 🡪(iii) 🡪(iv)
The purest form of natural water is _____.
rain water
well water
spring water
sea water
Teeth and skeleton have _____ water.
50%
23%
2%
98%
Solutions are _______ mixtures.
heterogeneous
homogeneous
saturated
supersaturated
What helps in the formation of a solution?
Two substances should be mutually soluble in one another.
Solute should be in the form of powder.
Temperature of the solvent should be high.
All of the above.
Fish die in shallow ponds in summer because
more carbon dioxide is produced.
solubility of air in water decreases with a rise in temperature.
ponds dry up.
the hot weather kills all aquatic plants.
Who is known as ‘Waterman of India’?
Mr. Rajendra Singh
Mr. Salim Ali
Mr.Varghese Kurian
Mr. M. S. Swaminathan
A sugar solution which cannot dissolve more of a solute at a given temperature is called ____.
solution
saturated solution
unsaturated solution
supersaturated solution
Identify the picture where water is conserved.
What concentration of salt is present in sea water?
26 g/l
35 g/l
55 g/l
89 g/l
