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Chemistry
What are the disadvantages of biomonitoring of water quality? Elaborate.
Chemistry
What is the principle of ion exchange chromatography?Write any one application of this chromatography.
Chemistry
What is meant by standards with reference to different pollutants? Describe how the standards for different pollutants are set.
Chemistry
What is mesopause and which layer of atmosphere is just above it?Give appropriate diagram indicating all the layers of atmosphere.
Chemistry
How do soils become alkaline?Give the advantages and disadvantages of alkaline soils.
Chemistry
What is the basis of soil texture analysis ?explain any two methods used for this purpose.
Chemistry
A 50-g unknown solid displaces 18.5 mL of water in a 500-mL beaker. What is the density of the unknown solid expressed in g/〖cm〗^3?
Chemistry
What is the mass in grams of 5.00 × 1022molecules of C9H8O4?
Chemistry
When a given mass of Caco3 was heated 0.25dm3 of a gas was collected at 250 and at a pressure of 120Nm-2
1) Write an equation for the reaction
2) Calulate the mass of the gaseous product obtained from (ii) Caco3
1) Write an equation for the reaction
2) Calulate the mass of the gaseous product obtained from (ii) Caco3
Chemistry
Will the following molecules be optically active? (i) CH3CHOHCOOH (ii) CH2ClF Justify your answer on the basis of symmetry considerations.
