HARD
11th CBSE
IMPORTANT
Earn 100

How will you concentrate H2O2? Show differences between structures of H2O2 and H2O by drawing their spatial structures. Also mention three important uses of H2O2.

Important Questions on Hydrogen

MEDIUM
11th CBSE
IMPORTANT
Give a method for the manufacture of hydrogen peroxide and explain the reactions involved therein.
HARD
11th CBSE
IMPORTANT
Illustrate oxidising, reducing, and acidic properties of hydrogen peroxide with equations.
HARD
11th CBSE
IMPORTANT
What mass of hydrogen peroxide will be present in 2 litres of a 5 molar solution? Calculate the mass of oxygen which will be liberated by the decomposition of 200 mL of this solution.
MEDIUM
11th CBSE
IMPORTANT

A colourless liquid A contains H and O elements only. It decomposes slowly on exposure to light. It is stabilised by mixing urea to store in the presence of light.

(i) Suggest possible structure of A.

(ii) Write chemical equations for its decomposition reaction in light.

MEDIUM
11th CBSE
IMPORTANT
An ionic hydride of an alkali metal has significant covalent character and is almost unreactive towards oxygen and chlorine. This is used in the synthesis of other useful hydrides. Write the formula of this hydride. Write its reaction with Al2Cl6.
HARD
11th CBSE
IMPORTANT
Sodium forms a crystalline ionic solid with dihydrogen. The solid is non-volatile and non-conducting in nature. It reacts violently with water to produce dihydrogen gas. Write the formula of this compound and its reaction with water. What will happen on electrolysis of the melt of this solid.