The d- and f- B...

Which of the following pair of compounds is expected to exhibit same colour in aqueous solution ? 

Titanium shows magnetic moment of 1.73 B M in its compound . What is the oxidation state of titanium in the compound ?  

Consider the following statements and arrange in the order of true/false as given in the codes.
$S_{1}$ : The IUPAC name of the compound $\left [ Cr\left ( NH_{3} \right )_{5} \left ( NCS \right )\right ]\left [ ZnCl_{4} \right ]$ is pentaamminethiocyanato-N-chromate (III) tetraachlorozincate (II).
$S_{2}: CoSO_{4}$ is paramagnetic and coloured.
$S_{3}:\left [ Co\left ( NH_{3} \right )_{4}\left ( NO_{2} \right )_{2} \right ]NO_{3}$ shows ionisation, linkage and geometrical isomerism.
$S_{4}$ : The C-O bond length in the complex, $\left [ Fe\left ( CO \right )_{5} \right ]$ is same as that found in carbon monoxide itself.

Predict the magnetic nature of $A$ and $B$:

Consider the following statements and arrange in the order of true/false as given in the codes.
$S_{1}$ : Both $\left [ Co\left ( ox \right )_{3} \right ]^{3-}$ and $\left [ CoF_{6} \right ]^{3-}$ are paramegnetic.
$S_{2}:CoCl_{3}3NH_{3}$ complex is non-conducing.
$S_{3}$ : The number of possible isomers for the complex $\left [ Pt\left ( NO_{2} \right )\left ( py \right )\left ( OH \right )\left ( NH_{3} \right ) \right ]$ is six.
$S_{4}$ : The oxidation state of iron in brown ring complex $\left [ Fe\left ( H_{2}O \right )_{5}NO^{+} \right ]SO_{4}$ is +II where NO is $NO^{+}$

Which amongst the following metal carbonyls are inner orbital complexes with diamagnetic property?

The catalytic activity of the transition metals and their compounds is described to their 

Which of the following is a colourless ion?

The transition metal used as a catalyst is:

Which of the following transition metal is used as a catalyst?