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41.

What happens when washing soda and baking soda are heated?

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42.

Thermodynamically the most stable form of carbon is

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exhibit oxidation state of + 2 and + 4

Exhibits oxidation state of +2 and +4. This is due to inert pair effect, elements of group 14 exhibit oxidation state of + 2 and + 4.

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44. Give the chemical formulae of (i) Pyrene (ii) Freon.

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45.

Give the chemical formuale of:
(i) Carborundum (ii) Dry ice.

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46.

Give the chemical name of compound used as fire extinguisher under the name pyrene.

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47.

Give the formula of a compound used as refrigerant.

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48.

Give the formula of a compound used as refrigerant.

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49.

Which allotrope of carbon is used in making electrodes?

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50.

Why are carbon compounds relatively inert ?

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