Water Quality Analysis Quiz

What is the pH value of tap water as observed using pH paper?

• pH 5

• pH 6

• pH 7

• pH 8

Which water sample showed a pH of 8 using pH paper?

• Rainwater

• Distilled water

• Bore well water

• Tap water

How many drops of universal indicator solution are added to each water sample?

• 3 drops

• 4 drops

• 6 drops

• 5 drops

What is the observed pH of pond water using the universal indicator solution?

• pH 8

• pH 7

• pH 6

• pH 5

What is the mean length of the rope when using the Secchi disc to measure turbidity?

• 100 cm

• 95 cm

• 90 cm

• 85 cm

What precaution is advised when performing the turbidity experiment with a Secchi disc?

• Wear gloves

• Use a life jacket

• Perform under teacher supervision

• Use a longer rope

Which water sample has higher turbidity according to the measuring cylinder method?

• Tap water

• Backwater

• Distilled water

• Pond water

What is the main observation when measuring turbidity using a measuring cylinder?

• Temperature change

• Sediment settling

• pH change

• Color change

How long should the water sample be left undisturbed before analyzing living organisms?

• 12-24 hours

• 24-48 hours

• 72-96 hours

• 48-72 hours

What tool is used to view organisms in the water sample?

• Magnifying glass

• Binoculars

• Telescope

• Compound microscope