
Select whether the following statement is True or False:
Copper does not react with dilute hydrochloric acid even on heating, but it reacts with sulphuric acid.

Important Questions on Metals and Non-metals

Look at the diagram. It shows some metals reacting in water. Put the metals in order of reactivity, starting with the most reactive.



Which of the following statements are incorrect?
I. Reactivity of decreases if it is dipped in nitric acid.
II. Carbon can reduce the oxides of and .
III. is a good conductor of electricity in solid state.
IV. Metals like and are always found in free state in nature.





Statement 1 : Reactivity of aluminium decreases when it is dipped in nitric acid.
Statement 2 : A protective layer of aluminium nitrate gets formed on the surface of aluminium which stops the further reaction.







The electronic configurations of three elements X, Y and Z are as follows:
X -
Y -
Z -
Which of the following is correct?


Read the given statements and mark the correct option.
Statement 1: Articles made of aluminium do not corrode even though it is an active metal.
Statement 2: Aluminium reacts with air to form a layer of oxide due to which it does not react further.
