MCQ's About "Water, Water Everywhere".

 WATER, WATER EVERYWHERE

Question 1
Roughly how much of the Earth’s surface is covered by water?
(A)  a quarter  (B)  a half  (C)  three-quarters  (D)  five-eights

Question 2
The best way to identify a liquid as being water is to:
(A)  taste it  (B)  show that it can put out fires
(C)  show that it boils at 100 Degree Celsius (D)  show that it is colourless

Question 3
Water is a:
(A)  mixture  (B)  element  (C)  compound  (D)  mixture of elements

Question 4
Each water molecule is made up of:
(A)  two hydrogen atoms and one oxygen atom  (B)  three hydrogen atoms and one oxygen atom
(C)  one hydrogen atom and one oxygen atom  (D)  two hydrogen atoms and two oxygen atoms

Question 5
How much of the human body mass is water?
(A)  10 per cent  (B)  30 per cent  (C)  50 per cent  (D)  70 per cent

Question 6
If your body mass is 40 kg, then how much of you is water?
(A)  7 kg  (B)  14 kg  (C)  21 kg  (D)  28 kg

Question 7
In order to find out whether tap water contains any dissolved solids, you would:
(A)  filter it  (B)  centrifuge it  (C)  crystallize it  (D)  evaporate it

Question 8
Which of the following will burn in air to produce water?
(A)  nitrogen  (B)  hydrogen  (C)  oxygen  (D)  carbon dioxide

Question 9
The number of bacteria in our water supply is kept at a safe level at the water treatment works by:
(A)  boiling it  (B)  filtering it  (C)  adding air to it  (D)  adding chlorine to it

Question 10
Sea water:
(A)  freezes at 0 degree Celsius (B)  consist of salt and water only
(C)  has a density of 1 gram per centimeter cube
(D)  is distilled to provide drinking water in some hot countries

Question 11
Deserts are extremely dry. Animals are able to survive desert conditions by:
(A)  producing large amounts of moist droppings to cool their bodies
(B)  running around when it is breezy to keep cool
(C)  urinating as little as possible
(D)  staying in burrows at night and coming out in the day

Question 12
The special watering of crops is called:
(A)  irritation  (B)  irrigation  (C)  interruption  (D)  investigation

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Answers:
Question 1 (C)  Question 2 (C)  Question 3 (C)  Question 4 (A)  Question 5 (D)
Question 6 (D)  Question 7 (D)  Question 8 (B)  Question 9 (D)  Question 10 (D)
Question 11 (C)  Question 12 (B)