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प्रश्न
We should use petrol and diesel judiciously. Think why?
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उत्तर
We should use them carefully and judiciously as they are fossil fuels and one of our important resources of our Earth which are not available in plenty and require millions of years to form and regenerate.
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संबंधित प्रश्न
What kinds of problems will we face, if the number of vehicles keeps on increasing? For example, more traffic on the road. Talk to your elders and write about it.
Manju said, “Why doesn't everyone use a bus?” What do you think, why don’t people travel by bus?
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.
Suggest some ways to save oil.
Have you ever collected dry wood or made cow dung cakes? How are they made?
If they cook food using wood or upla (cow dung cakes), what difficulties do they face due to smoke?
1. In the year 1976, out of 100 how many houses used uple and wood?
2. Which was the fuel used the least in 1976?
3. In 1976, LPG and kerosene were used in ______ houses, and in 1996 this increased to ______. This means that in twenty years their use increased by________%.
4. Out of 100, how many houses were using electricity in 1996?
5. Which fuel was used the least in 1996? What percentage of houses used it in the year 1976?
When they were young what was then used to cook food at home?
Guess the use of which fuel would increase and which would decrease in the next 10 years.
Look out for news reports on oil. Cut these and make a collage. Put up a chart in your classroom. Also, write your own views on these news reports.
