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प्रश्न
Identify the following substance:
Gas C that is colourless and can be used as a bleaching agent.
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उत्तर
Sulphur dioxide
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संबंधित प्रश्न
An element Z has a valency of 3. What is the formula of oxide of Z ?
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Play a game for writing formula.
Example 1: Make placards with symbols and valencies of the elements separately. Each student should hold two placards, one with the symbol in the right hand and the other with the valency in the left hand. Keeping the symbols in place, students should criss-cross their valencies to form the formula of a compound.
