Title CHXI08_REDOX REACTIONS.pdf ✅

NEET PREPARATION 13. Which of the following cannot act as an oxidis‐ ing agent? [Q315301] (a) (b) (c) (d) 14. The reaction in which hydrogen peroxide acts as a reducing agent is [Q315357] (a) (b) (c) (d) 15. In which of the following reactions, the under‐ lined substance is oxidized? [Q315285] (a) (b) (c) (d) 16. Which of the following is not an intramolecular redox reaction? [Q315470] (a) (b) (c) (d) 17. Which of the following is not a redox reaction? [Q315304] (a) (b) (c) (d) 18. , in this reaction, phosphorus in undergoes [Q315158] (a) oxidation (b) reduction (c) hydrolysis (d) both (1) and (2). 19. When metal is rusted then is [Q315346] (a) Oxidised (b) Reduced (c) Hydrolysed (d) Precipitated 20. Consider the following reaction The reaction is balanced if [Q315091] (a) (b) (c) (d) 21. What is the oxidation state of in ? [Q315152] (a) +5 (b) +6 (c) +4 (d) +7 22. Both oxidation and reduction takes place in [Q315310] (a) (b) (c) (d) 23. Which of the following ion is spectator ion in the reaction given below? [Q315109] (a) (b) (c) (d) 24. In the reaction Which element is reduced [Q315378] (a) I (b) (c) (d) 25. and are three elements forming part of a compound in oxidation states of and -2 re‐ spectively. What could be the compound? [Q315341] (a) (b) (c) (d) 26. In the reaction act as [Q315306] (a) Oxidising agent (b) Reducing agent (c) Dehydrating agent (d) Hydrating agent 27. The ratio of stoichiometric coefficient of and [Q315073] (a) (b) (c) (d) 28. Oxidation number of oxygen in is [Q315137] (a) (b) (c) (d) 29. Consider the folowing reduction processes MnO − 4 SO 2− 4 N 3− BrO − 3 PbS + 4H2O2 → PbSO4 + 4H2O 2KI + H2O2 → 2KOH + I2 2FeSO4 + H2SO4 + H2O2 → Fe2(SO4)3 + 2H2O Ag2O + H2O2 → 2Ag + H2O + O2 3Mg + N– 2 – → Mg3N2 2KI + Br –––2 – → 2KBr + I2 Cu ––– O + H2 → Cu + H2O C– O + Cl2 → COCl2 NH4NO2 → N2 + 2H2O 2Mn2O7 → 4MnO2 + 3O2 2KClO3 → 2KCl + 3O2 2H2O2 → 2H2O + O2 H2 + I2 → HI 1 2 1 2 PCl5 → PCl5 + Cl2 2CuSO4 + 4KI → Cu2 I2 + 2 K2SO4 + I2 CaOCl2 → Ca +2 + OCl − + Cl − 4H3PO3 → 3H3PO4 + PH3 H3PO3 Fe Fe 5H2O2 + ClO2 + 2OH − → xCl − + yO2 + 6H2O x = 4, y = 10 x = 5, y = 5 x = 5, y = 2 x = 2, y = 5 Mn MnO − 4 NaBr + HCl → NaCl + HBr HBr + AgNO3 → AgBr + HNO3 H2 + Br2 → 2HBr CaO + H2SO4 → CaSO4 + H2O Zn + CuSO4 → ZnSO4 + Cu Zn 2+ H + SO 2− 4 Zn Cr2O 2− 7 + 14H + + 6I − → 2Cr 3++7H2O + 3I2 O H Cr A, B C +2, +5 A2(BC)2 A2(BC4)3 A3 (BC4 )2 ABC 2Ag + 2H2SO4 → Ag2SO4 + 2H2O + SO2 , H2SO4 Fe 2+ → Fe 3+ + e − MnO − 4 + 5e − → Mn 2+ Fe 2+ MnO − 4 1 : 5 5 : 1 2 : 3 6 : 1 OF2 −1 +2 +1 −2 Zn 2+ + 2e → Zn(S); E ∘ = −0.76 V Ca 2++2e → Ca(s); E ∘ File failed to load: /extensions/MathZoom.js = −2. 87 V 4/19/25, 3:33 PM CHXI08:REDOX REACTIONS file:///C:/Users/DSREENATH/Downloads/NEET/CHEMISTRY/EASY/ONLY QUNS/CHXI08_REDOX REACTIONS.html 2/4
NEET PREPARATION The reducing power of the metals increases in‐ order: [Q315405] (a) (b) (c) (d) 30. From the electrochemical series, it can be in‐ cluded that: [Q315413] (a) will liberate from (b) Ag metal reacts spontaneously with (c) metal will liber‐ ate from (d) Ag metal will liber‐ ate from 31. Which of following is not a redox change? [Q315325] (a) (b) (c) (d) 32. Consider the following values: Under standard conditions the potential for the reaction [Q315419] (a) (b) (c) (d) 33. Maximum & minimum oxidation number of el‐ ements are given which one is incorrect match [Q315136] (a) (b) (c) (d) 34. Among the following, the one that is a dispro‐ portionation reaction is [Q315468] (a) (b) (c) (d) 35. The reaction in which hydrogen is acting as an oxidising agent is [Q315324] (a) With iodine to give hydrogen iodide (b) With lithium to give lithium hydride (c) With nitrogen to give ammonia (d) With sulphur to give hydrogen sulphide 36. Oxidation state of iodine in is [Q315338] (a) (b) (c) (d) 37. (unbalanced) The balanced equation will have the stoichiome‐ try for the reactants: [Q315080] (a) (b) (c) (d) 38. Chromium has the least oxidation state in [Q315135] (a) Chromium sulfate (b) Chromium trioxide (c) Potassium chromate (d) Potassium dichromate 39. The most powerful oxidizing agent in the fol‐ lowing is [Q315370] (a) (b) (c) (d) 40. For the redox reaction The correct coefficient of the reactants for the balanced equation are [Q315106] (a) (b) (c) (d) 41. Oxidation number of P in in and Cr in are, respectively [Q315194] (a) and +5 (b) , and +6 (c) and +6 (d) and +6 42. The oxidation number of an element in a com‐ pound is evaluated on the basis of certain rules. Which of the following rules is not correct in this respect? [Q315247] (a) An element in the free or the uncombined state bears oxidation number zero. (b) The oxidation num‐ ber of hydrogen is al‐ ways Mg +2+2e → Mg(s); E ∘= −2. 36 V Ni +2+2e → Ni(s); E ∘= −0. 25 V Ni < Zn < Mg < Ca Ca < Zn < Mg < Ni Zn < Mg < Ni < Ca Ca < Mg < Zn < Ni Zn 2+ H2 1MHCl Zn 2+ Zn H2 1MHCl H2 1MHCl 2H2 S + SO2 → 2H2O + 3 S 2BaO + O2 → 2BaO2 BaO2 + H2SO4 → BaSO4 + H2O2 2KClO3 → 2KCl + 3O2 E ∘ E o Fe 3+ /Fe 2+ = +0.77 V E o Sn 2+ /Sn = −0.14V Sn(s) + 2Fe 3+ (aq) → 2Fe 2+ (sq) + Sn 2+ (aq) is 0.91 V 0.63 V 1.40 V 1.68 V Elements Min O. N. Max O. N. P −3 +5 Cr +2 +6 Cl −1 +7 C −4 +4 P4 + OH − → H2PO − 4 + PH3 Pb(NO3)2 → PbO + NO2 + O2 MnO − 4 → MnO2 + MnO 2− 4 + O2 Zn + 2AgCN → 2Ag + Zn(CN)2 I − 3 −(1/3) + 4 + 5 - 3 Ca3(PO4)2 + SiO2 + C → CaSiO3 + P4 + CO Ca3(PO4)2 SiO2 C 1 3 5 2 3 5 2 6 10 1 6 10 H3BO3 HPO3 H3PO4 H2SO4 MnO − 4 + C2O 2− 4 + H + → Mn 2+ + CO2 + H2O MnO − 4 C2O 2− 4 H + 2 16 5 5 16 2 2 5 16 16 5 2 PO 3− 4 , S SO 2− 4 Cr2O 2− 7 +3, +6 +5, +3 −3, +6 +5, +6 +1 File failed to load: /extensions/MathZoom.js 4/19/25, 3:33 PM CHXI08:REDOX REACTIONS file:///C:/Users/DSREENATH/Downloads/NEET/CHEMISTRY/EASY/ONLY QUNS/CHXI08_REDOX REACTIONS.html 3/4
NEET PREPARATION NEET PREPARATION NEET PREPARATION NEET PREPARATION (c) The algebraic sum of all the oxidation numbers in a compound is zero. (d) In all its com‐ pounds, the oxidation number of fluorine is . 43. In the reaction, acts as [Q315274] (a) Reducing agent (b) oxidising agent (c) dehydrating agent (d) Neither oxidizing nor reducing agent 44. Atomic number of an element is 22 . The high‐ est O.S. exhibited by it in its compounds is [Q315246] (a) (b) (c) (d) 45. Strongest reducing agent is [Q315412] (a) (b) (c) Al (d) Ba −1 2Ag + 2H2SO4 → Ag2SO4 + H2O + SO2, H2SO4 +1 +2 +3 +4 K Mg File failed to load: /extensions/MathZoom.js 4/19/25, 3:33 PM CHXI08:REDOX REACTIONS file:///C:/Users/DSREENATH/Downloads/NEET/CHEMISTRY/EASY/ONLY QUNS/CHXI08_REDOX REACTIONS.html 4/4