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The p-Block Elements

Short Answer Type

31.

Name the different varieties of coal. Which has maximum percentage of carbon?

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32.

Which element of group 14 exhibits maximum tendency for catenation?

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33.

Which of the two elements - carbon and silicon forms multiple bonds?

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34.

Diamond is covalent, yet it has high melting point. Why?

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35.

Name two oxides of carbon.

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36.
Why is carbon monoxide injurious to health?

This is due to its combination with haemoglobin in the red blood cells to form carboxyhaemoglobin. As a result, blood cannot absorb oxygen and supply it to the body.

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37.

How is carbon monoxide prepared from sodium formate?

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38.

Give two uses of carbon monoxide.

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39.

Why is carbon dioxide called carbonic anyhdride?

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40.

Which allotrope of carbon is used as moderator in nuclear reactor?

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Previous Year Papers

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Short Answer Type

36. Why is carbon monoxide injurious to health?

36.
Why is carbon monoxide injurious to health?