JEE Main & Advanced Chemistry Redox Reactions / रेडॉक्स अभिक्रियाएँ Question Bank

done Auto oxidation and Disproportionation Total Questions - 14

• question_answer1)
  In the equation \[{{H}_{2}}S+2HN{{O}_{3}}\to 2{{H}_{2}}O+2N{{O}_{2}}+S\]                 The equivalent weight of hydrogen sulphide is  [BVP 2003]
  A)
                  16           done clear
  B)
                  68 done clear
  C)
                  34           done clear
  D)
                  17 done clear
  View Solution play_arrow

• question_answer2)
  If 1.2 g of metal displace 1.12 litre hydrogen at normal temperature and pressure, equivalent weight of metal would be           [DPMT 2001]
  A)
  24           done clear
  B)
  12 done clear
  C)
  1.2 ¸11.2              done clear
  D)
  1.2 - 11.2 done clear
  View Solution play_arrow

• question_answer3)
  Which one of the following nitrates will leave behind a metal on strong heating [AIEEE 2003]
  A)
                  Ferric nitrate      done clear
  B)
                  Copper nitrate done clear
  C)
                  Manganese nitrate         done clear
  D)
                  Silver nitrate done clear
  View Solution play_arrow

• question_answer4)
  To prevent rancidification of food material, which of the following is added         [CPMT 1996]
  A)
                  Reducing agent done clear
  B)
                  Anti-oxidant done clear
  C)
                  Oxidising agent done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer5)
  Prevention of corrosion of iron by zinc coating is called [MP PMT 1993; CPMT 2002]
  A)
                  Galvanization     done clear
  B)
                  Cathodic protection done clear
  C)
                  Electrolysis          done clear
  D)
                  Photo?electrolysis done clear
  View Solution play_arrow

• question_answer6)
  The metal used in galvanizing of iron is [MP PET 1985, 96]
  A)
                  \[Pb\]   done clear
  B)
                  \[Zn\] done clear
  C)
                  \[Al\]     done clear
  D)
                  \[Sn\] done clear
  View Solution play_arrow

• question_answer7)
  In which of the following reactions there is no change in valency               [NCERT 1974; CPMT 1978]
  A)
                  \[4KCl{{O}_{3}}\,\to \,3KCl{{O}_{4}}+KCl\] done clear
  B)
                  \[C{{l}_{2}}\] done clear
  C)
                  \[Ba{{O}_{2}}+{{H}_{2}}S{{O}_{4}}\,\to \,\,BaS{{O}_{4}}+{{H}_{2}}{{O}_{2}}\] done clear
  D)
                  \[2BaO+{{O}_{2}}\,\to \,2Ba{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer8)
  The equivalent weight of phosphoric acid \[({{H}_{3}}P{{O}_{4}})\] in the reaction \[NaOH+{{H}_{3}}P{{O}_{4}}\to Na{{H}_{2}}P{{O}_{4}}+{{H}_{2}}O\] is                                                                 [AIIMS 1999]
  A)
                  25           done clear
  B)
                  49 done clear
  C)
                  59           done clear
  D)
                  98 done clear
  View Solution play_arrow

• question_answer9)
  What is the equivalent mass of \[IO_{4}^{-}\] when it is converted into \[{{I}_{2}}\] in acid medium         [Kerala PMT 2004]
  A)
                  M/6       done clear
  B)
                  M/7 done clear
  C)
                  M/5       done clear
  D)
                  M/4 done clear
  E)
                  None of these done clear
  View Solution play_arrow

• question_answer10)
  For decolourization of 1 mole of \[KMn{{O}_{4}}\], the moles of \[{{H}_{2}}{{O}_{2}}\] required is            [AIIMS 2004]
  A)
                  1/2         done clear
  B)
                  3/2 done clear
  C)
                  5/2         done clear
  D)
                  7/2 done clear
  View Solution play_arrow

• question_answer11)
  In the reaction \[{{I}_{2}}+2{{S}_{2}}O_{3}^{--}\to 2{{I}^{-}}+{{S}_{4}}O_{6}^{--}\] equivalent weight of iodine will be equal to               [MP PET 2004]
  A)
                  1/2 of molecular weight done clear
  B)
                  Molecular weight done clear
  C)
                  1/4 of molecular weight done clear
  D)
                  None done clear
  View Solution play_arrow

• question_answer12)
  The equivalent weight of \[KI{{O}_{3}}\] in the reaction \[2Cr{{(OH)}_{3}}+4OH+KI{{O}_{3}}\to 2CrO_{4}^{2-}+5{{H}_{2}}O+KI\] is [MP PMT 2004]
  A)
                  Mole wt.              done clear
  B)
                  \[\frac{\text{Mol}\text{. wt}\text{.}}{\text{6}}\] done clear
  C)
                  \[\frac{\text{Mol}\text{. wt}\text{.}}{\text{2}}\]              done clear
  D)
                  \[\frac{\text{Mol}\text{. wt}\text{.}}{\text{3}}\] done clear
  View Solution play_arrow

• question_answer13)
  The product of oxidation of \[{{I}^{-}}\] with \[MnO_{4}^{-}\] in alkaline medium is         [IIT-JEE Screening 2004]
  A)
                  \[IO_{3}^{-}\]    done clear
  B)
                  \[{{I}_{2}}\] done clear
  C)
                  \[I{{O}^{-}}\]      done clear
  D)
                  \[IO_{4}^{-}\] done clear
  View Solution play_arrow

• question_answer14)
  In alkaline medium \[Cl{{O}_{2}}\] oxidize \[{{H}_{2}}{{O}_{2}}\] in \[{{O}_{2}}\] and reduced itself in \[C{{l}^{-}}\] then how many mole of \[{{H}_{2}}{{O}_{2}}\] will oxidize by one mole of \[Cl{{O}_{2}}\]        [Kerala CET 2005]
  A)
                  1.0          done clear
  B)
                  1.5 done clear
  C)
                  2.5          done clear
  D)
                  3.5 done clear
  E)
                  5.0 done clear
  View Solution play_arrow