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Chemistry CBSE Live product
Class 7 (2025-26)
The World of Metals and Non-metals
Effect of air on materials
8.
Applications of metals and non-metals
Question:
4
m.
Answer the following application based questions:
List a few applications of non-metals.
i.
Name two major non-metals which are present in fertilisers and enhance the growth of plants.
Non-metals that are used in making fertilisers are nitrogen and potassium
Non-metals that are used in making fertilisers are sodium and chlorine
Non-metals that are used in making fertilisers are nitrogen and chlorine
Non-metals that are used in making fertilisers are nitrogen and phosphorus
ii.
Why graphite being a non-metal used in making electrodes?
The presence of free electrons in the graphite makes it a good conductor
The absence of free electrons in graphite makes it a good conductor of electricity
The soft and slippery nature of graphite makes it a good conductor
The layers of rings in graphite makes it a good conductor of electricity
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