PART A (60% ) 1. In laboratory analysis it is recommended to use which type of r

Question

PART A (60% ) 1. In laboratory analysis it is recommended to use which type of reagents a) Technical grade b) Pure grade c) Chemical grade d) Analytical grade e) Medium grade f) Laboratory grade 2. Ch eck all the correct answers. Turbidity is important in public water supply because of a) Water borne disease problems b) Light obstruction problems c) Filterability problems d) Aesthetic problems e) Visual problems f) Disinfection problem g) All of the above 3. Differentiate between "Apparent color" and "true color. To what temperature should dishes be treated in order to condition them prior to gravimetric analysis? .

Explanation / Answer

1) Correct option is f

2)Correct option is g

3)Apparent colour of a liquid is the colour of the liquid due to presence of both dissolved and suspended solids in it.Whereas, true colour of a liquid is the colour of the liquid to to only dissolved solids.

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