Comprehension
These questions are based on the pie charts which represent the shift in water usage between 2006 and 2009; based on a survey conducted by Central Water Commission.
Pie Chart
Question: 1

If the ratio of processing cost for water for industrial, energy and domestic usage is 3: 5: 2, what is the ratio of processing cost for above mentioned usage in 2006 to that in 2009?

Updated On: Jan 30, 2025
  • 0.68
  • 0.72
  • 0.60
  • 0.77
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The Correct Option is B

Solution and Explanation

Required ratio = \(\frac{25×3+26×5+35×2}{49×3+35×5+30×2}\) = 0.719
So the correct option is (B)
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Question: 2

What is the percentage increase in usage in energy related sector form 2006 to 2009?

Updated On: Jan 30, 2025
  • 14.4\(\%\)
  • 23.3\(\%\)
  • 15.4\(\%\)
  • 34.6\(\%\)
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The Correct Option is D

Solution and Explanation

Required increase = \(\frac{35-26}{26}\)×100 = 34.6\(\%\)
So the correct option is D
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Question: 3

What is the irrigation usage as percentage of total usage in 2009?

Updated On: Jan 30, 2025
  • 65.18\(\%\)
  • 83.45\(\%\)
  • 78\(\%\)
  • 69.6\(\%\)
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The Correct Option is C

Solution and Explanation

Total usage in 2009 = 490 + 25 + 30 + 35 + 49
= 629 billion litre
Irrigation usage in 2009 = 490
Required percentage = \(\frac{490}{629}\)×100 = 77.9\(\%\) 
So the correct option is C
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Question: 4

What is the difference in domestic usage as percentage of total usage between 2006 and 2009?

Updated On: Jan 30, 2025
  • 3.16
  • 2.26
  • 2.08
  • 1.82
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The Correct Option is D

Solution and Explanation

Domestic usage in

2006 = \(\frac{35}{410 + 35 + 35 + 26 + 25}\)×100 = 6.59\(\%\)

Domestic usage in 

2009 = \(\frac{30}{490 + 25 + 30 + 35 + 49}\)×100 = 4.77\(\%\)

Required difference = 6.59 − 4.77 = 1.82\(\%\) 
So the correct option is (D)
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Question: 5

Which one out of the four shows the highest percentage increase in usage from 2006 to 2009?

Updated On: Mar 7, 2026
  • Domestic
  • Industrial
  • Others
  • Energy
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The Correct Option is B

Solution and Explanation

From the visual observation of pie chart, we can say
that the industrial usage shows the highest percentage 
increase (\(\frac{49 - 25}{25}\)×100 = 96\(\%\)) 
So, the correct option is (B)
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