Question

Metals and Non-Metals
1.An oxide solution of which of the following elements will turn blue litmus red. Mg, C, Na, S


2.Which non-metal is used in making pencil lead?


3.Identify the most reactive and least reactive metal amongst the following Aluminum, Potassium, Copper, zinc, Gold


4.State the nature of oxides of non-metals.


5Give an example of neutral oxide.


Which non-metal is kept underwater and why?

Answer 1

Answer:

1 mg

2 graphite

3 most reactive metal potassium nd least one is gold

4 oxides of non metal arw acidic in nature

5 carbon monoxide co

phosphorus is kept under water because it is less stable nd highly reactive . It catches fire in air to give dense fumes thus it is kept underwater

Answer 2

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