19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
In which of the following compounds is the oxidation state of C a fraction?
In which of the following compounds, the oxidation number of iodine is fractional?
In which of the compounds does manganese exhibit highest oxidation number?
Which of the following molecules has least oxidation number of central atom?
+3 oxidation state is most common in
Oxidation state of nitrogen is correctly given for Compound Oxidation State
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
An element exhibits an oxidation state -2. How many electrons are present in its outer shell?
The oxidation state of chromium in the final product formed by the reaction between KI and acidified potassium dichromate solution is
MnO4 - is a good oxidizing agent in different medium changing to MnO Mn MnO MnO Mn O -> -> -> -> Changes in oxidation number respectively, are
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 …
In which of the following pairs is there the greatest difference is the oxidation numbers of the oxidation numbers of the central atom?
Which of the following is not a redox reaction? (a) CaCO CaO CO -> (b) O 2H 2H O -> (c) Na H O NaOH H -> (d) MnCl MnCl Cl -> REDOX REACTIONS Ans (a) Sol. a. Oxidation states of Ca and C are +2 and +4, respec…
Assertion: F2 undergoes disproportionation reaction. Reason: Fluorine shows both positive and negative oxidation states.
Match the reactions in column I with their respective characteristics given in column II Column – 1 Column – 2 Name and Reaction Characteristics a. P PH H PO -> p. Fractional oxidation number b. C O q. c. CH Cl r. Na…
In the equation NO H O NO 2H ne -> n stands for
In the ionic equation, BiO 6H xe Bi 3H O -> the value of x is
The ratio of stoichiometric coefficient of Fe2+ and MnO
What is the stoichiometric coefficient of Ca in the reaction? Ca Al Ca Al ->
Which of the following reaction is balanced? (a) AsO MnO AsO MnO 2H O -> (b) MnO C O Mn CO -> (c) 3 2 Cu 4HNO Cu(NO ) 2NO 2H O -> (d) H S HNO H O NO S -> Ans (c) Sol. In option (a), 2- - 3- AsO +MnO A…
For the redox reaction MnO4– + C2O42– + H+ ->Mn2+ + CO2 + H2O, The correct stoichiometric coefficients of MnO4– , C2O42– and H+ are respectively:
In the chemical reaction, K2Cr2O7 + XH2SO4 + YSO2 -> K2SO4 + Cr2(SO4)3 + ZH2O, X, Y and Z are
aK Cr O bKCl cH SO -> xCrO Cl yKHSO zH O The above equation balances when
In the balanced chemical reaction IO aI bH cH O dI -> a, b, c and d respectively, correspond to
In the following redox equation, 2+ 2- + 2+ 3+ 2 7 xUO +Cr O +yH aUO +zCr +bH O -> the value of coefficients x, y and z respectively, are