Q1. Which method is used first to settle heavy particles at the bottom of a container?
REMOVING INSOLUBLE IMPURITIES

Quiz
•
Science
•
5th Grade
•
Hard
Shyama Satheesan
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A. Filtration
B. Sedimentation
C. Decantation
D. Evaporation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Q2. What is the purpose of decantation?
A. To boil water
B. To allow solids to settle
C. To pour out clear water without disturbing the settled particles
D. To add chemicals to water
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Q3. Which process uses filter paper to separate dirt from water?
A. Sedimentation
B. Decantation
C. Filtration
D. Chlorination
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Q4. Mira used filtration after sedimentation and found no change in pH. What does this mean?
A. The filter is broken
B. Filtration removes particles, not dissolved acids
C. The water is not safe
D. She used the wrong method
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Q5. If filtration doesn’t remove a strange taste in water, what could be the reason?
A. The filter paper was wet
B. The water was too cold
C. The impurity is a dissolved substance like a chemical
D. The filter was too strong
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Q6. You are given muddy water with a pH of 4. You perform sedimentation and decantation, but the pH remains the same. What should be your next step to improve both clarity and pH?
A. Use boiling
B. Filter it and add a mild base like baking soda
C. Add more mud
D. Leave it in sunlight
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Q7. What would happen if you skip sedimentation and directly use filtration on very muddy water?
A. Water becomes clean faster
B. Filter paper gets clogged quickly and slows down the process
C. Filter paper becomes acidic
D. pH increases quickly
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