EASY
Earn 100

Give the chemical reaction that shows the hydrolysis of peroxides alkali metal with cold water.
Important Questions on The s-Block Elements
EASY
The metal nitrate that liberates on heating

MEDIUM
On strong heating, the nitrate of which metal does not produce nitrogen dioxide?

HARD
Which of the following salt would give with hot and dil and also decolourises water?

EASY
In the following reaction, the total number of oxygen atoms in and is______

MEDIUM
Potassium superoxide on hydrolysis gives

HARD
Lithium nitrate and sodium nitrate, when heated separately, respectively, give

EASY
Identify and from the following reaction

EASY
Choose the incorrect statement.

MEDIUM
Which is most basic in character?

MEDIUM
Upon the addition of a solution to a strongly acidified solution of barium nitrate, a white precipitate was obtained which did not dissolve even after large addition of water. Solution contained

MEDIUM
What are the metal ions present in carnallite?

MEDIUM
Both and releases same gas and forms , when they are treated with zinc metal in the presence sodium hydroxide.
Identify the incorrect statement for the above reactions.

MEDIUM
Represent the union of two sets by Venn diagram for each of the following.
is a prime number between and
is an odd number between and

MEDIUM
Which one of the following on hydrolysis gives the corresponding metallic hydroxide, and ?

EASY
Find out the oxidation state of sodium in

MEDIUM
What are the products formed when an aqueous solution of magnesium bicarbonate is boiled?

MEDIUM
Which is/are coloured and paramagnetic?

HARD
Starting with sodium chloride how would you proceed to prepare sodium peroxide?

MEDIUM
When a substance reacts with water, it produces a combustible gas and a solution of a substance in water. When another substance reacts with this solution of , it also produces the same gas on warming. can produce on reaction with dilute sulphuric acid at room temperature. imparts a deep golden yellow colour to a smokeless flame of Bunsen burner. and , respectively, are

MEDIUM
(potassium superoxide) is used in oxygen cylinders in space and submarines because of it

