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Science Carbon and its Compounds Chapter 4

12 Questions

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Science Carbon and its Compounds Chapter 4

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Questions and Answers

What is the significance of carbon as mentioned in the text?

Carbon is only present in compounds and not in its elemental form.

Carbon is the most abundant element on Earth.

Carbon is important due to its versatile nature and significance in various compounds and living structures. (correct)

Carbon is a rare element found in abundance in the earth's crust.

What percentage of carbon is present in the earth's crust based on the text?

0.2%

0.02% (correct)

20%

Which of the following items listed in the text are NOT mentioned as being based on carbon?

Steel (correct)

Food

Clothes

Books

What is the approximate percentage of carbon dioxide in the atmosphere according to the text?

3% (D) Signup and view all the answers

Why are many compounds mentioned in the text made up of carbon?

Because carbon forms stable compounds due to its versatile bonding properties. (B) Signup and view all the answers

What is the significance of compiling a list of items used or consumed as instructed in the text?

To learn about the chemical elements present in those items. (A) Signup and view all the answers

What is the significance of carbon in the context of this chapter?

It is essential for all living structures and is the basis of many items we use. (C) Signup and view all the answers

What percentage of carbon is present in the earth's crust according to the text?

0.02% (D) Signup and view all the answers

What would be the product if a compound containing carbon is burnt?

Carbon dioxide (B) Signup and view all the answers

Why is carbon mentioned to be of immense significance in the text?

Due to its presence in all living structures and many everyday items. (B) Signup and view all the answers

Which of the following statements about carbon is correct based on the text?

Only a small percentage of carbon is present in the atmosphere. (B) Signup and view all the answers

What are most of the items mentioned in the last column of the table filled by students likely made up of according to the text?

Compounds of carbon (C) Signup and view all the answers