Question

Match Column I with Column II.
$\begin{array}{cc}\text{Column - I}& \text{Column - II}\\ \text{a. Chlorophyll}& \text{(P) Rhodium}\\ \text{b. Blood pigment}& \text{(Q) Cobalt}\\ \text{c. Wilkinson catalyst}& \text{(R) Calcium}\\ \text{d. Vitamin}{B}_{12}& \text{(S) Iron}\\ & \text{(T) Magnesium}\end{array}$

• A. a - T; b - S; c - P; d - Q
• B. a - S; b - T; c - P; d - Q
• C. a - T; b - S; c - Q; d - R
• D. a - T; b - Q; c - R; d - S

Answer 1

The correct option is A a - T; b - S; c - P; d - Q

Chlorophyll, a pigment which provides the green colour to plants, is a magnesium based complex.
Human blood is red in colour due to a pigment called haemoglobin which is an iron based complex.
Wilkinson's Catalyst is $\left[RhCl\right(PP{h}_3{)}_3]$ which is visibly a rhodium complex.
Vitamin $B_{12}$ is also called cobalamin. It has an elaborate structure with cobalt as the central metal atom.