19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
An element exhibits an oxidation state -2. How many electrons are present in its outer shell?
The oxidation states of sulfur in the anions SO , S O and S O follow the order (a) S O S O SO (b) S O S O SO (c) S O SO S O (d) SO S O S O
Oxidation state of nitrogen is correctly given for Compound Oxidation State
+3 oxidation state is most common in
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
In which of the following cases is the oxidation state of N atom wrongly calculated?
In the reaction, SO 2H S 3S 2H O -> the substance oxidized is
An oxidation process involves
In the reaction o o ½ K O KO ->
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 ->
The number of electrons lost in the following change is Fe H O Fe O H ->
In the reaction o 5 2 3Cl 6NaOH Na ClO 5Na Cl 3H O -> The element which loses as well as gains electrons is
In the reaction 3Br 6CO 3H O 5Br BrO 6HCO ->
In the reaction 2FeCl H S 2FeCl 2HCl S ->