Question

Test tube label	Metal/ Non-metal	Reaction with dilute hydrochloric acid	Reaction with dilute sulphuric acid
		Room temperature	warm	Room temperature	warm
A	Magnesium (ribbon)
B	Aluminum (foil)
C	Iron (filings)
D	Copper(pieced flexible wire)
E	Charcoal (powder)
F	Sulphur(powder)

Answer 1

Hint:. All the metals when are made to undergo reaction with the acids i.e. with the hydrochloric acid or the sulphuric acid, they release the hydrogen gas along with the formation of corresponding salts and the hydrogen gas so ,released, produces pop sound when it is exposed to the burning sphincter. On the contrary non-metals don't react with the acids. Now answer the statement.

Complete step by step answer:
- First of all. Let’s discuss what metals and nonmetals are. Metals are the substances that are solid, hard, malleable (means a substance can be moulded into any shape), ductile (means a substance can be made into thin wires) and can conduct heat and electricity. copper, iron etc. On the other hand, non-metals are those which lack all these properties and are poor conductors of electricity. E.g. nitrogen, chlorine etc.
- All the metals react with acids giving the hydrogen along with the corresponding salts. These reactions of metals are slow at the room temperature but occur vigorously on warming. The hydrogen gas released is colorless, odorless gas and when this hydrogen gas is exposed with the burning sphincter , it burns with the pop sound.
Now, considering the statement, let’s discuss these reactions first with dilute hydrochloric acid at room temperature and on warming and then with the dilute sulphuric acid.

Test tube label	Metal/ Non-metal	Reaction with dilute hydrochloric acid
		Room temperature	warm
A	Magnesium (ribbon)	hydrogen gas is released along with the formation of salt $Mg C{{l}_{2}}$ and occurs slowly at room temperature. The reaction occurs as; $Mg(s)+2HCl(aq)\to Mg C{{l}_{2}}(aq)+{{H}_{2}}(g)$	Reaction occurs vigorously on warming.
B	Aluminum (foil)	hydrogen gas is released along with the formation of salt $AlC{{l}_{3}}$ and occurs slowly at room temperature. The reaction occurs as;$2Al(s)+6HCl(aq)\to 2AlC{{l}_{3}}(aq)+3{{H}_{2}}(g)$	Reaction occurs vigorously on warming.
C	Iron (filings)	hydrogen gas is released along with the formation of salt $FeC{{l}_{2}}$ and occurs slowly at room temperature. The reaction occurs as;$2HCl+2Fe\to 2FeC{{l}_{2}}+{{H}_{2}}$	Reaction occurs vigorously on warming.
D	Copper(pieced flexible wire)	No reaction	No reaction
E	Charcoal (powder)	No reaction	No reaction
F	Sulphur(powder)	No reaction	No reaction

Test tube label	Metal/ Non-metal	Reaction with dilute sulphuric acid
		Room temperature	warm
A	Magnesium (ribbon)	Hydrogen gas is released along with the formation of salt and reaction occurs slowly at room temperature. The reaction occurs as;$Mg+{{H}_{2}}S{{O}_{4}}\to Mg S{{O}_{4}}+{{H}_{2}}$	Reaction occurs vigorously on warming
B	Aluminum (foil)	Hydrogen gas is released along with the formation of salt and reaction occurs slowly at room temperature. The reaction occurs as;$Al+{{H}_{2}}S{{O}_{4}}\to Al{{(S{{O}_{4}})}_{3}}+{{H}_{2}}$	Reaction occurs vigorously on warming
C	Iron (filings)	Hydrogen gas is released along with the formation of salt and reaction occurs slowly at room temperature. The reaction occurs as;$Fe+{{H}_{2}}S{{O}_{4}}\to Fe{{(S{{O}_{4}})}_{3}}+{{H}_{2}}$	Reaction occurs vigorously on warming
D	Copper(pieced flexible wire)	hydrogen gas is released along with the formation of salt and reaction occurs slowly at room temperature. The reaction occurs as;$Cu+{{H}_{2}}S{{O}_{4}}\to Cu S{{O}_{4}}+{{H}_{2}}$	Reaction occurs vigorously on warming
E	Charcoal (powder)	No reaction	No reaction
F	Sulphur(powder)	No reaction	No reaction

Note: Copper being a metal but still it doesn’t react with the dilute hydrochloric acid. It is so because in the reactivities series, copper is placed below the hydrogen and thus, can’t displace hydrogen from hydrochloric acid being less reactive than the hydrogen and thus, doesn’t give any reaction with the dilute hydrochloric acid.