Question

1.Name two soft metals that can be cut with a knife.
2. A non metal which is essential for life and can be inhaled during breathing.
3. Non metal used to disinfect water.
4. Purple coloured non metal which forms brown solution in alcohol and is applied on wounds as antiseptic.
(Pls give exact answers :)

Answer 1

ANSWER 
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1) Sodium [Na] and Potassium [Pt] are two soft metals that can be cut with a knife.

2) Oxygen is a non-metal which is essential for life and can be inhaled during breathing.

3) Chlorine is a non-metal used to disinfect water.

4) Iodine is a purple coloured non-metal which forms brown solution in alcohol and is applied on wounds as antiseptic.

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Answer 2

1.  two soft metals that can be cut with a knife. a very thin sheet of aluminium and thin copper wire.
2. A non-metal which is essential for life and can be inhaled during breathing. oxygen 
3.  Non-metal used to disinfect water. chlorine
4. purple coloured non-metal which forms brown solution in alcohol and is applied on wounds as antiseptic. potassium permanganate.

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