Question

In an experiment, 20mL of standard hard water of 0.01256 N consumes 21.5mL of EDTA. 20mL of sample hard water consumes 15mL of standardized EDTA. 20mL of the same sample water after boiling and filtering consumes 5mL of the standardized EDTA. Calculate the total hardness, permanent and temporary hardness of the given water sample. edta problems and answers

Answer 1

Answer:

Define spherical

mirrors and explain

their types.

2. Explain the terms

related to spherical

mirrors?

3. Define divergence

and convergence.

4. Explain the rules for

spherical mirrors

with ray diagrams.

5. Instead of a plane

mirror, why a

concave mirror used

for shaving ?

6. What are the

properties of images

formed by a

concave mirror?