Redox Reactions...

\(H_2O_2\) reduces \(MnO_4^-\) ion to

When a sulphur atom becomes a sulphide ion

When P reacts with caustic soda, the products are \( PH_3\) and \(NaH_2PO_2\). This reaction is an example of

In the course of a chemical reaction an oxidant

When sodium metal is dissolved in liquid ammonia, blue colour solution is formed. The blue colour is due to

Oxidation involves

One gas bleaches the colour of flowers by reduction while the other by oxidation          

When iron or zinc is added to \(CuSO_4\) solution, copper is precipitated. It is due to

In which of the following acid, which acid has oxidation reduction and complex formation properties

The compound which could not act both as oxidising as well as reducing agent is              

For \(H_3PO_3 \) and \(H_3PO_4\) the correct choice is

One mole of \(N_2H_4\) loses 10 mol of electrons to form a new compound Y. Assuming that all nitrogen appear in the new compound, what is the oxidation state of \(N_2\,in\,Y\) (There is no change in the oxidation state of hydrogen)

\(HNO_2\) acts both as reductant and oxidant, while \(HNO_3\) acts only as oxidant. It is due to their               

Chlorine is in +1 oxidation state in

The oxidation number of chlorine in HOCl

Oxidation state of elemental carbon is

Oxidation number of C in \(C_6H_{12}O_6\) is

Oxidation state of oxygen in hydrogen peroxide is

Oxidation number of osmium (Os) in \(OsO_4 \) is

Which one of the following nitrates will leave behind a metal on strong heating