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

2019 · 10 Apr · Shift 2 · Q16
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. /2019 · 10 Apr · Shift 2 · Q16

D and F Block Elements question

2019 · 10 Apr · Shift 2 · Q16

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
The INCORRECT statement is :
  1. A
    the color of [CoCl(NH3)5]2+[CoCl(NH_3)_5]^{2+}[CoCl(NH3​)5​]2+ is violet as it absorbs the yellow light.
  2. B
    the gemstone, ruby, has Cr3+Cr^{3+}Cr3+ ions occupying the octahedral sites of beryl.
  3. C
    the spin-only magnetic moment of [Ni(NH3)4(H2O)2]2+[Ni(NH_3)_4(H_2O)_2]^{2+}[Ni(NH3​)4​(H2​O)2​]2+ is 2.83 BM.
  4. D
    the spin-only magnetic moments of [Fe(H2O)6]2+[Fe(H_2O)_6]^{2+}[Fe(H2​O)6​]2+ and [Cr(H2O)6]2+[Cr(H_2O)_6]^{2+}[Cr(H2​O)6​]2+ are nearly similar.
PreviousNext

More from D and F Block Elements

  • The highest possible oxidation states of uranium and plutonium, respectively are :2019 · MCQ
  • The effect of lanthanoid contraction in the lanthanoid series of elements by and large means :2019 · MCQ
  • Wilkinson catalyst is : (Et = C2​H5​)2019 · MCQ
  • The 71st electron of an element X with an atomic number of 71 enters into the orbital :2019 · MCQ
  • The element that usually does NOT show variable oxidation states is :2019 · MCQ
  • A​4KOH,O2​​(Green)2B​​+2H2​O3B​4HCl​(Purple)2C​​+MnO2​+2H2​O2C​H2​O.KI​(Purple)2A​​+2KOH+D​…2019 · MCQ
  • The pair that has similar atomic radii is :2019 · MCQ
  • The correct order of atomic radii is :2019 · MCQ