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Fill in the blanks : Petroleum is obta...

Fill in the blanks :
Petroleum is obtained by _________ holes in the Earth crust.

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JNAN PUBLICATION-Use of Environment-friendly Energy-EXAMPLE
  1. Fill in the blanks : The large portion of electrical energy is produ...

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  2. Fill in the blanks : of years are required for the formation of ene...

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  3. Fill in the blanks : Petroleum is obtained by holes in the Earth cr...

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  4. Fill in the blanks : Due to excessive use of fossil fuel is increas...

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  5. State whether True or False: Coal and petroleum is formed from the r...

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  6. State whether True or False: Animals depend upon sun indirectly.

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  7. State whether True or False: Drilling of petroleum first started in ...

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  8. State whether True or False: Solar energy is being used in our count...

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  9. State whether True or False: Solar panel didn't cause any harm to ou...

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  10. State whether True or False: Solar panel lasts for 100 years.

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  11. State whether True or False: There are large wind mills in Bakkhali ...

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  12. State whether True or False: Natural gas is obtained from organic wa...

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  13. State whether True or False: Remains of plants and animals are calle...

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  14. State whether True or False: Bio-gas is produced from the various or...

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  15. What are the uses of fossil fuels?

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  16. What are directly related to population explosion?

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  17. In early days how people used to go from one place to another?

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  18. Nowdays how people travel from one place to another?

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  19. Give two examples of environment friendly energies.

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  20. How solar energy is produced?

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