Discuss briefly giving an example in each case the role of coordination compounds in:
`{:("(i) biological systems","(iii) analytical chemistry"),("(ii) medicinal chemistry and","(iv) extraction/metallurgy of metals."):}`

Show how each of the following compounds can be converted to benzoic acid. {:("(i) Ethylbenzene","(ii) Acetophenone"),("(iii) Bromobenzene","(iv) Phenylethene (Styrene)"):}

Give simple chemical tests to distinguish between the following pairs of compounds. {:("(i) Propanal and Propanone"," (ii) Acetophenone and Benzophenone"),("(iii) Phenol and Benzoic acid"," (iv) Benzoic acid and Ethyl benzoate"),("(v) Pentan-2-one and Pentan-3-one"," (vi) Benzaldehyde and Acetophenone"),("(vii) Ethanal and Propanal",):}

What is meant by the following terms ? Give an example of the reaction in each case. {:("(i) Cyanohydrin","(ii) Acetal","(iii) Semicarbazone"),("(iv) Aldol","(v) Hemiacetal","(vi) Oxime"),("(vii) Ketal","(vii) Imine","(ix) 2,4-DNP-derivative"),("(x) Schiff’s base",,):}

The correct steps of process of metallurgy is i) purification of the metal ii) concentration of the ore iii) extraction of crude metal iv) selection of ore from minerals.

What are Hormones ? Give one example for each. i) Steroid Hormones ii) Polypeptide Hormones iii) Amino Acid derivatives.

Give structural formulae and IUPAC names of the following compounds : (I ) Tert-Amyl chloride , (ii) sec-buty, iodide , (iii ) neo-Hexyl bromide and (iv ) Iso-pentyl chloride

Give the names of the elements present in the following compounds. (i) quick lime (ii) Hydrogen bromide (iii) Baking soda (iv) Potassium compounds

Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following points: (i) electronic configurations (ii) oxidation states (iii) ionisation enthalpies and (iv) atomic sizes.

Complex compounds are molecular compounds which retain their indentities even when dissolved in water. They do not give all the simple ions in solution but instead furnish complex ions. The complex compounds are often called coordination compounds because certain groups called ligands are attached to the central metal ion by coordinate or dative bonds. Coordination compounds exhibit isomerism, both structural and stereoisomerism. The struculre, magnetic property, colour and electrical properties of complexes are explained by various theories. Arrange the following compounds in order of of their molar conductance : i) K[Co(NO_(2))_(4)(NH_(3))_(2)] ii) [Cr(ONO)_(3)(NH_(3))_(3)] iii) [Cr(NO_(2))(NH_(3))_(5)]_(3)[Co(NO_(2))_(6)]_(2) iv) Mg[Cr(NO_(2))_(5)(NH_(3))]