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Question
Besides oil, what else is found deep inside the earth?
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Solution
Besides oil, many minerals are found deep inside the earth, e.g. coal, iron, copper, bauxite, gold, diamond, potassium, magnesium and zinc, etc.
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The rates of petrol are different in each city. The rates of petrol and diesel in Delhi are given here. Look at the table and answer the questions.
| Oil | Rate of one litre in 2002 (Oct) | Rate of one litre in 2007 (Oct) | Rate of one litre in 2014 (Oct) |
| Petrol | Rs 29.91 | Rs 43.52 | Rs 67.86 |
| Diesel | Rs 18.91 | Rs 30.48 | Rs 58.97 |
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