Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

D and F Block Elements question

2003 · Shift 0 · Q45
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /D and F Block Elements
  5. /2003 · Shift 0 · Q45

D and F Block Elements question

2003 · Shift 0 · Q45

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
What would happen when a solution of potassium chromate is treated with an excess of dilute nitric acid?
  1. A
    Cr2O72−Cr_2O^{2-}_7Cr2​O72−​ and H2OH_2OH2​O are formed
  2. B
    CrO42−CrO^{2-}_4CrO42−​ is reduced to +3 state of Cr
  3. C
    CrO42−CrO^{2-}_4CrO42−​ is oxidized to +7 state of Cr
  4. D
    Cr3+Cr^{3+}Cr3+ and Cr2O72−Cr_2O^{2-}_7Cr2​O72−​ are formed
PreviousNext

More from D and F Block Elements

  • Which one of the following nitrates will leave behind a metal on strong heating?2003 · MCQ
  • The atomic numbers of vanadium (V), Chromium (Cr), manganese (Mn) and iron (Fe) are respectively 23, 24, 25 and 26. Which one of these may be expected to have the highest second ionization enthalpy?2003 · MCQ
  • The radius of La3+ (Atomic number of La = 57) is 1.06 Å. Which one of the following given values will be closest to the radius of Lu3+ (Atomic number of Lu = 71) ?2003 · MCQ
  • The number of d-electrons retained in Fe2+ (At no of Fe = 26) ion is :2003 · MCQ
  • How do we differentiate between Fe3+ and Cr3+ in group III?2002 · MCQ
  • When KMnO4​ acts as an oxidising agent and ultimately forms [MnO4​]2−, MnO2​, Mn2​O3​, Mn2+ then the number of electrons transferred in each case respectively is :2002 · MCQ
  • Which of the following ions has the maximum magnetic moment?2002 · MCQ
  • Most common oxidation states of Ce (cerium) are :2002 · MCQ