Question

is a metal or a non-metal?
4
? Which gas is produced
Answer the following questions in brief.
a) How would you find out whether a chunk of solid element is a metal or a no
b) What are displacement reactions? Give examples.
c) What happens when hydrochloric acid is poured on a copper place? Which gas is
How do you test it?
10. Answer the following questions in detail.
a) Name the four non-metals which are important for the sustenance of life. Mention
importance in life. Also, mention the uses of some other non-metals.
b) What happens when sodium reacts with water? State the equation to represent
the reaction
und ductility? Give any two examples.​

Answer 1

Answer:

a) Just bring it near a magnetic field if it gets attracted it is metal or otherwise non metal

b) The reaction in which the higher reactive element displaces less reactive element