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What are the problems associated with monitoring by physical & chemical
methods?
methods?
75cc of water sample requires 10.2 cc of 0.01 M EDTA for titration in presence of
eriochrome black T indicator. Calculate the total hardness.
eriochrome black T indicator. Calculate the total hardness.
How do the abnormal properties of water help in the operations of hydrological
cycle?
cycle?
Write the structural features of an antibody molecule. Discuss any one mechanism by which antibodies interact with antigens.
What is the role of ribosomal p-site and a-site in protein biosynthesis? How does streptomycin perform its antibiotic function?
How many grams of O2 are produced from the decomposition of 3.5 mil KCLO3?
What are essential plant nutrients? Explain nutrient availability in soils.
Describe the various ways to find out the exact percentage of sand, silt and clay
particles in soil.
particles in soil.
Calculate the pH of a sample of lake water that has a [H3O+] = 7.6 × 10−5 M.
a chemist must dilute 45.8 ml of 1.26 m aqueous barium acetate (Ba(C2H3O2)2) solution until the concentration falls to 1.00 M. he’ll do this by adding distilled water to the solution until it reaches a certain final volume. calculate this final volume, in milliliters. round your answer to 3 significant digits.
