Hydrogen

On reaction with stronger oxidizing agent like $\mathrm{KIO_4}$, hydrogen peroxide oxidizes with the evolution of $\mathrm{O_2}$. The oxidation number of I in $\mathrm{KIO_4}$ changes to ______.

Given below are two statements.

Statement I: Stannane is an example of a molecular hydride.

Statement II: Stannane is a planar molecule.

In the light of the above statement, choose the most appropriate answer from the options given below.

The hardness of water is generally expressed in terms of CaCO$_3$ equivalent. The possible reasons are as follows:

(A) Its molar mass is 100, so the calculations become easier.

(B) It decomposes at a temperature, 1200 K.

(C) It is insoluble in water.

(D) It is moisture insensitive.

Choose correct option from the following for the reasons.

(A) $\mathrm{HOCl+H_2O_2\to H_3O^++Cl^-+O_2}$

(B) $\mathrm{I_2+H_2O_2+2OH^-\to2I^-+2H_2O+O_2}$

Choose the correct option.

In which of the following reactions, hydrogen peroxide acts as an oxidizing agent ?

Which one of the following statements about water is FALSE ?

Identify the incorrect statement regarding heavy water :

Identify the reaction which does not liberate hydrogen :

$\ce{Fe^{3+}}$ is reduced to $\ce{Fe^{2+}}$ by using

From the following statements regarding $\ce{H2O2}$, choose the incorrect statement :

Permanent hardness in water cannot be cured by :

Which physical property of dihydrogen is wrong ?

The pair(s) of reagents that yield paramagnetic species is/are

Hydrogen peroxide in its reaction with $\ce{KIO4}$ and $\ce{NH2OH}$ respectively, is acting as a

Hydrogen peroxide acts both as an oxidising and as a reducing agent depending upon the nature of the reacting species. In which of the following cases $\ce{H2O2}$ acts as a reducing agent in acid medium ?

The reagent(s) used for softening the temporary hardness of water is(are)