Why is anodising done on Aluminium?

Important Questions on Metals and Non-Metals

EASY

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

The reducing ability of the metals $K, Au, Zn$ and $\mathrm{Pb}$ follows the order

EASY

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

The metal that gives hydrogen gas upon treatment with both the acid as well as the base is

HARD

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

What is the action of water on sodium? Write the equations of the chemical reactions involved.

HARD

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

What will happen if a strip of copper is kept immersed in a solution of silver nitrate $\left({\mathrm{A}\mathrm{g}\mathrm{N}\mathrm{O}}_3\right)$?

HARD

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

Why is sodium kept immersed in kerosene oil?

HARD

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

Write an equation of the reaction of iron with steam. Indicate the physical states of all the reactants and products

EASY

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

What is aqua-regia? Name two special metals which are insoluble in common reagents but dissolve in aqua-regia.

HARD

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

Give one example, with equation, of the displacement of hydrogen by a metal from an acid.

EASY

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

Which is correct molar ratio of ${\mathrm{HNO}}_3$ and $\mathrm{HCl}$ in aqua regia?

HARD

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

A copper plate was dipped in ${\mathrm{A}\mathrm{g}\mathrm{N}\mathrm{O}}_3$ solution. After certain time, silver from the solution was deposited on the copper plate. State the reason why it happened. Give the chemical equation of the reaction involved.

MEDIUM

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

Name two metals which react violently with cold water. Write any three observations you would make when such a metal is dropped into water. How would you identify the gas evolved, if any, during the reaction?

HARD

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.

HARD

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:
Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.

MEDIUM

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

Name two metals which form amphoteric oxides.

MEDIUM

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

Name two metals which cannot displace hydrogen from dilute acids.

HARD

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

How would you show that silver is chemically less reactive than copper?

MEDIUM

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

Name two metals which can displace hydrogen from dilute acids

HARD

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

Name two metals which can, however, liberate hydrogen gas from very dilute nitric acid.

EASY

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

Which property of an element is always a natural number?

MEDIUM

Chemistry>Chemistry - Xth Grade>Metals and Non-Metals>Chemical Properties of Metals

Mendeleev predicted the existence of certain elements not known at that time and named two of them as eka-silicon and eka-aluminium.
(a) Name the elements which have taken the place of these elements.
(b) Mention the group and the period of these elements in the modern periodic table.
(c) How many valence electrons are present in each one of them?