The table shows production of selected primary-energy series in India,…
2013
The table shows production of selected primary-energy series in India, measured in petajoules. Based on the figures for the first and last years, which series recorded the largest absolute increase in production from 2006–07 to 2010–11?
Source / series | 2006–07 | 2010–11 |
|---|---|---|
Coal & lignite | 7,459 | 9,207 |
Crude petroleum | 1,423 | 1,579 |
Natural gas | 1,223 | 2,012 |
Hydro & nuclear electricity | 4,763 | 5,059 |
Answer: A. Coal & lignite — ConceptTo compare absolute growth across data series, subtract the earlier production from the later production for each series. The comparison must use the…
- A.
Coal & lignite
- B.
Crude petroleum
- C.
Hydro & nuclear electricity
- D.
Natural gas
Show answer & explanation
Correct answer: A
Concept
To compare absolute growth across data series, subtract the earlier production from the later production for each series.
The comparison must use the same unit and the same endpoint years for every series.
Application
Energy source | 2006–07 | 2010–11 | Absolute increase |
|---|---|---|---|
Coal & lignite | 7,459 | 9,207 | 1,748 |
Crude petroleum | 1,423 | 1,579 | 156 |
Natural gas | 1,223 | 2,012 | 789 |
Hydro & nuclear electricity | 4,763 | 5,059 | 296 |
Cross-check and contrast
Among the selected series, 1,748 is greater than 789, 296, and 156.
The same subtraction rule and petajoule unit were used for every series.
Therefore, coal & lignite recorded the largest absolute increase in production.