19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
In the reaction 2FeCl H S 2FeCl 2HCl S ->
In the reaction 3Br 6CO 3H O 5Br BrO 6HCO ->
In the following equation MnO2 acts as MnO 2H O 2e MnO 4OH ->
The oxidation state of chromium in Cr(CO)6 is:
In the reaction o 5 2 3Cl 6NaOH Na ClO 5Na Cl 3H O -> The element which loses as well as gains electrons is
The number of electrons lost in the following change is Fe H O Fe O H ->
Oxidation number of nitrogen in (NH4)2SO4 is
Which of the following is the best description of the behaviour of bromine in the reaction given below? o H O Br HOBr H Br ->
In the reaction o o ½ K O KO ->
An oxidation process involves
The oxidation states of iodine in HIO4, H3IO5 and H5IO6 respectively, are
In which of the following reactions, there is no change in valency? (a) SO 2H S 2H O 3S -> (b) 2Na O 2Na O -> (c) Na O H SO Na SO H O -> (d) 4KClO 3KClO KCl -> Ans (c) Sol. The oxidation states of central atom i…
A metal ion M3+ loses 3 electrons, its oxidation number will be :
Which of the following molecules has least oxidation number of central atom?
In which of the compounds does manganese exhibit highest oxidation number?
In which of the following compounds, the oxidation number of iodine is fractional?
In which of the following compounds is the oxidation state of C a fraction?
In which of the following compounds is the oxidation state of C highest?
The oxidation state of C in diamond is
The oxidation states of the most electronegative elements in the products of the reaction between BaO2 and H2SO4 are
Oxidation number of carbon in CCl is :
The oxidation number of C in CH2O is
Which one of the following reaction involves oxidation- reduction?
The oxidation state of Fe in Fe3O8 is
The oxidation number of C in HNC is