A 250 kg cow produces 200 g of protein per day but 250 g Methylophillus methylotrophus can produce 25 tonnes of protein. Name this emerging area of research. Explain its benefits.

Consider the following four statements (A-D) and select the option which includes all the correct ones only: Single cell Spirullina can produce large quantities of food rich in proteins, minerlas, vitamins, etc. Body weightwise, the micro-organism Methylophilus methylotrophus may be able to produce several time more proteins than the cows per day Common button mushrooms are a very rich source of vitamin-C A rice variety has been developed which is very rich in calcium.

A farmer mixes two brands P and Q of cattle feed. Brand P, costing Rs 250 per bag, contains 3 units of nutritional element A, 2.5 units of element B and 2 units of element C. Brand Q costing Rs 200 per bag contains 1.5 units of nutritional element A, 11.25 units of element B and 3 units of element C. The minimum requirements of nutrients A,B and C are 18 units, 45 units and 24 units respectively. Determine the number of bags of each brand which should be mixed in order to produce a mixture having a minimum cost per bag? What is the minimum cost of the mixture per bag?

A 1.0 g sample of co (NH_(2)CH_(2)CH_(2)NH_(2))_(3)Cl_(3) is dissolved in 25.0 g if water and the freezing point of the solution is -0.87^(@)C . How many ions are produced per mole of compound? The K_(f) of water is 1.86^(@)C//"molal"