Discuss briefly giving an example in each case, the role of coordiantion compounds in
(i) biologycal systems (ii) medical chemistry
(iii) analytical chemistry
(iv) extraction / metallurgy of metals

Give an example for each when coordiantion compounds play an important role in photosynthesis by plant.

Give an example for each when coordiantion compounds play an important role in development of photographic film.

Give an example for each when coordiantion compounds play an important role in removal of excess of iron present in our body.

(a) Define the following terms giving an example of each : (i) Associated colloids (ii) Lyophilic sol (iii)Adsorption

Give the examples of two coordination complexes where central metal atom has coordiantion number (i) 5 (ii) 6

Choose the correct answer from the choices given under each bit/Give one word answer only. Biotic components of an ecosystem includes (i) only producers (ii) producers and consumers (iii) producers, consumers and decomposers (iv) only consumers

Study the following statements and select the incorrect ones. (i) Pyramids of energy and yearly biomass production can never be inverted, since this would violate the laws of thermodynamics. (ii) Pyramids of standing crop and numbers can be inverted, since the number of organisms at a time does not indicate the amount of energy flowing through the system. (iii) There are certain limitations of ecological pyramids such as they do not take into account the same species belonging to two or more trophic levels. (iv) Saprohytes are not given any place in ecological pyramids even though they play a vital role in the ecosystem.