Question

4. Turbidity of a water sample is measured by
a) pH meter
b) potentiometer
c) conductivity meter
d) Nephelometer

5. Transparency of a water sample is measured by
a) pH meter
b) Sec chi Disc
c) Conductivity meter
d) potentiometer

6. Total dissolved solids(ppm)< 1000 signifies
a) fresh water
b) brackish water
c) saline
d) brine

7. Total hardness is given by the concentration of
a) Caż only
b) Mga only
c) Ca2 + Mg2both
d) Fe3+

8. 1 ppm
a) Ig/ml
b) Ig/litre
c) Img/litre
d) Img/ml
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Answer 1

Answer:

The amount of hardness is expressed in milligrams per litre (mg/L) or grains per gallon (gpg) as calcium carbonate. Hardness is calculated from the equation Hardness = 2.497 (Ca) + 4.118 (Mg).07-Jan-2017