Question

1.state the heat values of the following liquid fuels.
petrol,kerosene,diesel and spirit
2.how were coal and petroleum formed?name any two elements derived from coal.
3.differentiate between combustible and non-combustible please don't spam

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Answer 1

Explanation:

After 28 hours, she observed that seeds did not germinate. Which of the following is the reason for the failure of germination?

Answer 2

1. i don't know

2.Millions of years ago, dense forests on the.surface. of the Earth got buried under the soil. Due to high temperature and pressure they changed into peat, lignite and coal. Such dead vegetable matter got preserved between layers of sedimentary rock in very thick deposits. Petroleum is the mineral oil found in rocks.

3. in the attachment

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