The addition of metals like $Cr,\,Mn,\,W$ and $Ni$ to ordinary steel makes it

  • A

    More useful

  • B

    Alters the properties of ordinary steel

  • C

    Both $ (a)$  and $ (b)$

  • D

    None of these

Similar Questions

Coloured salts are formed by

The colour of copper sulphide is

  • [AIIMS 2010]

In the following members of transition elements, the lowest ionization energy is of

The magnetic moments of following,arranged in decreasing order will be :-

$(i)$ $Co^{3+}$ (Octahedral complex with a strong field ligand)

$(ii)$ $Co^{3+}$  (Octahedral complex with a weak field ligand like $F^-$ )

$(iii)$ $Co^{2+}$  (Tetrahedral complex)

$(iv)$ $Co^{2+}$ (Square planar complex)

$(a)$ Transition metals can act as catalysts because these can change their oxidation state. How does $Fe(III)$ catalyse the reaction between iodide and persulphate ions ?

$(b)$ Mention any three processes where transition metals act as catalysts.