Match the following: 1. Diamond a. Poisonous gas 2. Gas carbon b. Shoe polishes 3. Carbon monoxide c. Octahedral 4. Carbon dioxide d. Domestic fuel 5. Soot e. Electrodes 6. Charcoal f. Colourless

1. Diamond is a solid form of elemental carbon. Its crystals are octahedral, colourless and transparent. It is non-conductor of electricity. It is lustrous. 2. Gas carbon is a good conductor of electricity. As a result, it is used to make electrodes. 3. Carbon monoxide is an odourless and colourless gas. It is a poisonous gas that, when inhaled, causes asphyxiation and central nervous system damage. It forms carboxy haemoglobin when it combines with haemoglobin. 4. Carbon dioxide is colourless, odourless and tasteless gas. This gas is given out during respiration. It is one of the greenhouse gases. 5. Soot is used in making shoe polishes. It is a general term that refers to impure carbon particles resulting from the incomplete combustion of a hydrocarbon. 6. Wood charcoal is used as a domestic fuel because it contains more carbon than the wood. It is counted as a smokeless fuel because it causes less air pollution on burning. 1. Diamond c. Octahedral 2. Gas carbon e. Electrodes 3. Carbon Monoxide a. Poisonous gas 4. Carbon dioxide f. Colourless 5. Soot b. Shoe polishes 6. Charcoal d. Domestic fuel

E M B I B E

Unravelling Science Chemistry>Chapter 7 - Carbon and Its Compounds>Exercise>Q A

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Inorganic carbon compounds are obtained from . (carbon atoms / oxygen atoms)

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Important Questions on Carbon and Its Compounds

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8th ICSE

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Unravelling Science Chemistry>Chapter 7 - Carbon and Its Compounds>Exercise>Q A

_____ is the cheapest form of carbon. (Carbon dioxide / Diamond)

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8th ICSE

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Unravelling Science Chemistry>Chapter 7 - Carbon and Its Compounds>Exercise>Q B

Match the following:

1. Diamond	a. Poisonous gas
2. Gas carbon	b. Shoe polishes
3. Carbon monoxide	c. Octahedral
4. Carbon dioxide	d. Domestic fuel
5. Soot	e. Electrodes
6. Charcoal	f. Colourless