Choose the letter of the correct answer.
1. A mixture with particles evenly scattered in a dispersed medium without settling down. It is called as
special kind of mixture because its tiny particles can't be seen by naked eye. What kind of mixture is this
A. Decantation
C. Solution
B. Colloids
D. Suspension
2. Which description best describes colloids?
A. Composed of molecules bigger than a solution but smaller than a suspension.
B. Mixtures of two or more substances than can be easily separated
C. Formed by mixing different kinds of solutions
D. Have molecules that are big enough to settle at the bottom
3. Which of the following is the best description of colloids?
A. Sticky, creamy substance C. Dark, black substance
B. Clear, pure substance D. Clear, flawless substance
4. Which colloid has both protective and decorative function?
A. Ink
C. paint
B. Insecticide Spray
D Creams
5. What is an emulsion?
A. It is a liquid dispersed in either a liquid or solid
B. It is a solid dispersed in either solid or a liquid.
C. These are suspensions of liquid or solid particles in a gas
D. None of the above
6. Which mixtures cannot be separated throughpicking?
A. grains and mongo seeds C. sliced fruits
B. nails and pins
D. Oil and vinegar
7.Which mixture can be separated through picking?
A.softdrinks B.orange juice
C.picking D.sliced mixed fruit
8 To get the smaller pacrticle size of flour for baking, leaving larger parties of flour in the sifter above the screen .What kind of separating of mixture it is A.Sieving B.sifting C.picking D.drying ​