Question

Sohail filtered a sample of muddy water through a filter paper 'P' placed a funnel. He saw that the water collected after filtration was still muddy.
When he filled a sample of the same muddy water through a filter paper 'Q' the water collected after filtration was clear.

Which of the following explain Sohail's observations?

A. Filter paper Q was rougher than filter paper P
B. Filter paper Q was bigger in size than filter paper P
C. Filter paper Q had smaller pores than filter paper P
D. Filter paper Q allowed water to pass through faster than filter paper P

Answer 1

"On passing muddy water through filter paper P and then again through Q the water derived became clear.

This clarified the observation of Sohail, that filter paper Q had smaller pores than P, which helped to filter the muddy water better.

The smaller pors of Q obstructed the mud particles to pass through.

"

Answer 2

c filter paper Q had smaller pores than filter paper P because of this the water of Q filter is clean because small pores dont. allow impurities