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

2024 · 31 Jan · Shift 1 · Q14
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. /2024 · 31 Jan · Shift 1 · Q14

D and F Block Elements question

2024 · 31 Jan · Shift 1 · Q14

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
Identify correct statements from below: A. The chromate ion is square planar. B. Dichromates are generally prepared from chromates. C. The green manganate ion is diamagnetic. D. Dark green coloured K2MnO4\mathrm{K}_2 \mathrm{MnO}_4K2​MnO4​ disproportionates in a neutral or acidic medium to give permanganate. E. With increasing oxidation number of transition metal, ionic character of the oxides decreases. Choose the correct answer from the options given below:
  1. A
    B, D, E only
  2. B
    A, B, C only
  3. C
    A, D, E only
  4. D
    B, C, D only
PreviousNext

More from D and F Block Elements

  • The metals that are employed in the battery industries are A. Fe B. Mn C. Ni D. Cr E. Cd Choose the correct answer from the options given below:2024 · MCQ
  • Choose the correct statements from the following A. Mn2​O7​ is an oil at room temperature B. V2​O4​ reacts with acid to give VO2​2+ C. CrO is a basic oxide D. V2​O5​…2024 · MCQ
  • Highest oxidation state of Mn is exhibited in Mn2​O7​. The correct statements about Mn2​O7​ are (A) Mn is tetrahedrally surrounded by oxygen atoms. (B) Mn is octahedrally surrounded by oxygen atoms. (C) Contains Mn−O−Mn…2023 · MCQ
  • Among following compounds, the number of those present in copper matte is ​. A. CuCO3​ B. Cu2​S C. Cu2​O D. FeO2023 · Numerical
  • Which element is not present in Nessler's reagent?2023 · MCQ
  • Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Cu2+ in water is more stable than Cu+. Reason (R) : Enthalpy of hydration for Cu2+…2023 · MCQ
  • Strong reducing and oxidizing agents among the following, respectively, are :2023 · MCQ
  • Element not present in Nessler's reagent is :2023 · MCQ