19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Alkali metals show regular trend in their physical and chemical properties with the
In which of the following pairs is there the greatest difference is the oxidation numbers of the oxidation numbers of the central atom?
A mole of N2H4 loses 10 mol of electrons to form a new compound Y. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in Y? (There is no change in the oxidation number …
MnO4 - is a good oxidizing agent in different medium changing to MnO Mn MnO MnO Mn O -> -> -> -> Changes in oxidation number respectively, are
The oxidation state of chromium in the final product formed by the reaction between KI and acidified potassium dichromate solution is
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 processes is nitrogen oxidized? (a) NH N -> (b) NO NO -> (c) NO NO -> (d) NO NH -> Ans (a) Sol. o NH N -> Oxidation state of N = -3 Oxidation state of N = 0 In the other reaction, the oxid…
The oxidant which cannot act as a reducing agent is
An element that never has a positive oxidation state in any of its
The oxidation number S in Na2S4O6 is