19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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) ] ->
Which of the following is a disproportionation reaction? (a) Cu O 2H Cu Cu H O -> (b) 2CrO 2H Cr O H O -> (c) CaCO 2H Ca H O CO -> (d) Cr O 2O H 2CrO H O -> Ans (a) Sol. A chemical reaction in whic…
Which of the following statements about the following reaction is correct? 2Cu O s Cu S s 6Cu s 5O g ->
Which of the following compounds can be oxidised further with a strong oxidising agent?
Match the reactions given in column I with the number of electrons lost or gained in column II Column – 1 Column – 2 Reaction Number of electrons lost or gained a. Mn OH H O MnO -> p. b. AlCl 3K Al 3KCl -> q. c. …
Which of the following statements is wrong?
Which of the following statements is incorrect?
Consider the following unbalanced redox reaction: H2O + AX + BY -> HA + OY + X2B The possible oxidation states of B and Y in BY are, respectively,
Which of the following will not be oxidized by O3?
In the compound YBa2Cu3O7 which shows superconductivity, what is the oxidation state of Cu? Assume that the rare earth element yttrium is in its usual +3 oxidation state. (a) (b)
Assertion: HNO3 acts only as an oxidizing agent, while HNO2 acts both as an oxidizing agent and a reducing agent. Reason: The oxidation number of N in HNO3 is maximum
Which of the following acids possesses oxidizing, reducing and complex forming properties? REDOX REACTIONS
In which of the following is the highest oxidation state not possible?