State How Carbon Occurs in the Free State and in the Combined State. - Chemistry

State how carbon occurs in the free state and in the combined state.

Short/Brief Note

Occurence of carbon : In free state – diamond, graphite, in impure form as coal.
In combind state : CO₂ in atmosphere, hydro-carbon as natural gas, petroleum, cellulose in wood and limestone CaCO₃.

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Chapter 9: Carbon & Its Compounds - Exercises

Chapter 9 Carbon & Its Compounds
Exercises | Q 2

Write true or false

Carbon constitues 0.03% of the earth’s crust.

Give two uses for the following:

wood charcoal

What happens when a baking mixture containing baking powder is heated?

FILL IN THE BLANK

Natural gas is an important ............. fuel.

Answer the following question.
Why are methane compounds have poor conductors of electricity?

Name the following:

An acid formed when carbon dioxide is dissolved in water under pressure.

Higher Order Thinking Skill.

Why do carbon exist mostly in combined state?

The main component of water gas is ______.

Which among the following compound is soluble in water?

______ is the main constituent of coal.