1.

a. Three
samples are given to you. You have to determine the hydrogen ion concentration
and express the values as a standard parameter. This has to be done by two
different methods and values have to be compared. Give your comments about the
samples whether it is as per IS 10500 – 1991 for this particular parameter. Write aim, apparatus/reagent, procedure, observation
table, calculations, result, environmental significance and inference.

b. How
can you find out the optimum dose of alum to be added to remove turbidity of a
water body? Write the aim, apparatus,
procedure and environmental significance.
Diagrammatically
represent the expected behaviour of various doses on alum on the turbidity of
the water.

2.
Determine the acid neutralizing capacity
of the given sample of solution. Express it as per standard unit. Does the
sample fit the standard for this parameter given by Indian Standards? Give your
comments. Write aim,
apparatus/reagent, procedure, observation table, calculations, result,
environmental significance and inference.

3. A
sample is given to you which is referred to have a problem of not producing
lather with soap. You have to conduct an experiment to prove the validity of
this statement and give your comments. Write aim, apparatus/reagent, procedure, observation
table, calculations, result, environmental significance and inference.

4. A
sample of water is found to have a salty taste due to presence of common salt.
Determine its concentration in the solution. Is this concentration allowable as
per IS 10500 – 1991? Write
aim, apparatus/reagent, procedure, observation table, calculations, result,
environmental significance and inference

5. A
water body was found to have fishes dead in a particular area. It was found
that a industry is disposing waste in this area with high BOD. What parameter
would be low/high to cause this issue? Determine the concentration of this
particular parameter? Does it come in the limit required in any water body? Write aim, apparatus/reagent, procedure, observation
table, calculations, result, environmental significance and inference.

6. Anaerobic
reaction of organic material generates various gases out of which one has
rotten egg smell. Which gas is it? How can you determine if given sample has
same anion of this gas? Does the concentration of the same exceed the Indian
standard limits? Write aim,
apparatus/reagent, procedure, observation table, calculations, result,
environmental significance and inference.

7. Three
samples are given to you. You have to determine the hydrogen ion concentration
and express the values as a standard parameter. This has to be done by two
different methods and values have to be compared. Give your comments about the
samples whether it is as per IS 10500 – 1991 for this particular parameter.

b. When
solids are mixed with water, it will exist in the solution in different forms.
Write the aim, apparatus/ equipments and procedure to find the three main
classes of solids in water. Write the environmental significance and your
inference about the sample.