1. Which of the following is incorrect? (a)Zinc Oxide is called as amphoteric oxide (b) Silicon counts among metalloids (c) Sodium is kept open in air (d) Metals conduct electricity
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Answer:
Part c is incorrect...
Explanation:
Sodium is a very high reactive metal. when is it kept in open sodium reacts with oxygen in the air at room temperature, to form, sodium oxide. Therefore it catches fire and starts burning when kept in open in the air.
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