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D and F Block Elements question

2024 · 31 Jan · Shift 1 · Q15
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  5. /2024 · 31 Jan · Shift 1 · Q15

D and F Block Elements question

2024 · 31 Jan · Shift 1 · Q15

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
The metals that are employed in the battery industries are A. Fe\mathrm{Fe}Fe B. Mn\mathrm{Mn}Mn C. Ni\mathrm{Ni}Ni D. Cr\mathrm{Cr}Cr E. Cd\mathrm{Cd}Cd Choose the correct answer from the options given below:
  1. A
    A, B, C, D and E
  2. B
    A, B, C and D only
  3. C
    B, D and E only
  4. D
    B, C and E only
View written solutionFree

Correct answer: D

  1. Identify metals commonly used in battery industry

    We check each metal:

    • Fe (Iron): Not a standard metal specifically used in conventional battery industry among the common examples asked in d-block usage questions.
    • Mn (Manganese): Yes. It is used in dry cells, alkaline batteries, etc. (for example as manganese dioxide in battery cathode materials).
    • Ni (Nickel): Yes. Used in rechargeable batteries such as Ni-Cd and Ni-MH batteries.
    • Cr (Chromium): Not commonly listed as a battery metal in standard NCERT/JEE applications.
    • Cd (Cadmium): Yes. Used in Ni-Cd batteries.

  2. Select the correct set

    Thus, the metals employed in battery industries are: Mn, Ni, Cd\boxed{\text{Mn, Ni, Cd}}Mn, Ni, Cd​

    That corresponds to: B,C,E\boxed{B, C, E}B,C,E​

  3. Match with the given options

    • Option A: A,B,C,D,EA, B, C, D, EA,B,C,D,E — incorrect
    • Option B: A,B,C,DA, B, C, DA,B,C,D only — incorrect
    • Option C: B,D,EB, D, EB,D,E only — incorrect
    • Option D: B,C,EB, C, EB,C,E only — correct

  4. Final answer

    Option D\boxed{\text{Option D}}Option D​

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