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Question
Suggest some ways to save oil.
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Solution
Following steps can be taken to save oil:
- Use public transport instead of personal vehicles.
- Prefer walking or cycling if you need to go short distances.
- Switch of the engine of the vehicle on red lights.
- Use solar energy and biogas wherever possible.
- Pulses, rice, etc. should be soaked in water before cooking.
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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 |
- In 2014, as compared to 2007 the rate of petrol went up by ______ rupees. The rate of diesel increased by ______ rupees.
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 |
- What was the difference in the rates of petrol and diesel from 2002 to 2007 and 2007 to 2014?
- Where all is an oil used?
- Where is diesel used? Find out.
