Q14 of 25 Page 106

Let us assume that you are on the moon. If you try to focus sunlight on a paper using magnifying glass, does the paper catch fire? or not? Why?

If we shall try to focus sunlight on a paper using magnifying glass on moon, then the paper will not catch fire. This is because moon has no atmosphere like earth and thus there is no oxygen present there to support the combustion process. As we know presence of oxygen is an essential condition for the combustion, so paper will not catch fire.


More from this chapter

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12

What would happen if oxygen stops to support combustion? – Make a guess. And if it is the situation for what other works fuels are useful.

 13

Use of more fuels in our daily life causes air pollution and it is harmful to human being and the other life on earth. Suggest some remedies to avoid this.

 15

Can you heat water in a paper vessel? How is it possible?

 16

“Is combustion possible without the supply of oxygen?'' Discuss with your teacher