19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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…
What is the stoichiometric coefficient of Ca in the reaction? Ca Al Ca Al ->
The ratio of stoichiometric coefficient of Fe2+ and MnO
In the ionic equation, BiO 6H xe Bi 3H O -> the value of x is
In the equation NO H O NO 2H ne -> n stands for
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…
Assertion: F2 undergoes disproportionation reaction. Reason: Fluorine shows both positive and negative oxidation states.
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…
Which of the following reactions do not involve oxidation-reduction? I.2Rb 2H O 2RbOH H II.2CuI 2CuI I III.NH Br KOH KBr NH H O IV.4KCN Fe CN K Fe CN -> -> -> ->
Which of the following represents a redox reaction? (a) NaOH HCl NaCl H O -> (b) BaCl H SO BaSO 2HCl -> (c) CuSO 2H O Cu OH H SO -> (d) Zn 2HCl ZnCl H -> Ans (d) Sol.
Which of the following reaction is disproportionation? (a) 2H S SO 2H O 3S -> (b) Ca H CaH -> (c) P 3NaOH 3H O PH 3NaH PO ->
Which of the following is not an intermolecular redox reaction? (a) MgCO MgO CO -> (b) O 2H 2H O -> (c) K H O KOH H -> (d) MnBr MnBr Br -> Ans (a) Sol. Intermolecular redox reaction and redox reactions …
Which of the following is not a disproportionation reaction? o I. NH NO N O 2H O II.P 3NaOH 3H O P H NaH P O -> -> REDOX REACTIONS III. PCl PCl Cl IV. IO I H I H O -> ->
The reaction, 3ClO (aq) ClO (aq) 2Cl (aq) -> is an example of
Which of the following is a redox reaction? (a) NaCl KNO NaNO KCl -> (b) CaC O 2HCl CaCl H C O -> (c) Ca(OH) 2NH Cl CaCl 2NH 2H O -> (d) 2K[Ag(CN) ] Zn 2Ag K [Zn(CN) ] ->
In the reaction, SO 2H S 3S 2H O -> the substance oxidized is
In the neutral or faintly alkaline medium, KMnO4 oxidises iodide into iodate. The change in oxidation state of manganese in this reaction is from (NEET 2022)
An oxidation process involves
Which of the following reactions are disproportionation reactions? (i) 2Cu Cu Cu -> (ii) 3MnO 4H 2MnO MnO 2H O -> (iii) 2KMnO K MnO MnO O -> (iv) 2MnO 3Mn 2H O 5MnO 4H -> Select the correct option fr…
The number of electrons lost in the following change is Fe H O Fe O H ->
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 ->
Which of the following is not a disproportionation reaction? o I. NH NO N O 2H O II.P 3NaOH 3H O P H NaH P O -> -> REDOX REACTIONS III. PCl PCl Cl IV. IO I H I H O -> ->
Which of the following is not an intermolecular redox reaction? (a) MgCO MgO CO -> (b) O 2H 2H O -> (c) K H O KOH H -> (d) MnBr MnBr Br -> Ans (a) Sol. Intermolecular redox reaction and redox reactions …
Which of the following reaction is disproportionation? (a) 2H S SO 2H O 3S -> (b) Ca H CaH -> (c) P 3NaOH 3H O PH 3NaH PO ->