Among $Mg , Cu , Fe , Zn$ the metal that does not produce hydrogen gas in reaction with hydrochloric acid is

  • [KVPY 2015]
  • A
    $Cu$
  • B
    $Zn$
  • C
    $Mg$
  • D
    $Fe$

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The $CORRECT$ ionisation energy order is

Spin only magnetic moment of $\left[ MnBr _{6}\right]^{4-}$ is $.....\,B.M.$ (round off to the closest integer)

  • [JEE MAIN 2022]

Ferrous sulphate on heating gives

Which of the following compounds is not colored yellow ?

  • [JEE MAIN 2015]

Which of the following statements are correct?

$(A)$ The $M ^{3+} / M ^{2+}$ reduction potential for iron is greater than manganese

$(B)$ The higher oxidation states of first row $d$ block elements get stabilized by oxide ion.

$(C)$ Aqueous solution of $Cr ^{2+}$ can liberate hydrogen from dilute acid.

$(D)$ Magnetic moment of $V ^{2+}$ is observed between $4.4-5.2\,BM$

Choose the correct answer from the options given below:

  • [JEE MAIN 2023]