Choose the letter of the best answer .
1.Which of the following is a suspension?
a. antibiotic b. gelatin
c. shampoo d. toothpaste
2.What happens to the particles of suspension?
a. it settles at the bottom
b. it completely floats on liquid
c. it completely dissolves in water
d. some solidifies at the bottom and some floats
3. Which off the following explains why suspension is colloid?
a. colloid materials are mixtures that do not completely dissolve
b.materials used for mixtures can easily be picked by hands
c. materials used cannot be identified after mixing
d. colloids are mixtures that solidify
4.Which of of the following mixtures is an example of suspension used for building houses?
a. water and flour
b. water and gravel
c. bricks and sand
d. sand and gravel
5.The following are examples of suspension EXCEPT.
a. rice and water
b. con starch and water
c. salt and water
d. shampoo
6.Which off the following is TRUE about colloids?
a. all colloids are liquid
b. all colloids are artificial
c. all particles in a colloid settle down after some time
d. colloid may come in any of the three states: solid, liquid or gas
7.The following colloids are used for food or food preparation EXCEPT.
a. gelatin b. milk
c. silica gel d. whipped cream 8.Which colloid has both protective and decorative function?
a. creams b. ink
c. paint d. insecticide spray
9.What type of mixture are colloid and suspension?
a. homogeneous mixture
b. heterogeneous mixture
c. solution
d. both a and b
10.Why do you think others are using herbal medicine like salabat tea instead of buying synthetic drugs in curing our health problems ?
1. it is cheaper
2. it is organic
3. it is more effective
4. it can be bought in any drugstore
a. 1 and 2 b. 2 and 4
c. 1 and 3 d. 2, 3 and 4
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Verified answer
Answer:
1. b
2. a
3. a
4. d
5. c
6. d
7. c
8. c
9. b
10. d
Explanation:
I'm not sure if that's right but that's my answers : )