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Phases of colloids and t..



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Q1. What is called a dispersion medium?

(a) It is where the dispersed phase settles
(b) It is where the solute particles settle
(c) It is where the dispersed phase is suspended
(d) It is the primary medium

Q2. What is called a dispersion phase?

(a) It is the main layer
(b) It is the secondary layer in which the colloidal particles are dispersed
(c) It is the secondary layer
(d) It is the basic colloidal layer

Q3. What is the size of normal an amino acid?

(a) 1 to 2 nm
(b) 2 to 3 nm
(c) 4 to 5 nm
(d) 2 to 5 nm

Q4. Which of the following form of colloid is considered to be the lightest colloid?

(a) Gaseous foam
(b) Solid sol
(c) Sol
(d) Liquid sol

Q5. Which of the following form of colloid is considered to be the strongest colloid?

(a) Gel
(b) Foam
(c) Solid sol
(d) Liquid sol

Q6. During an experiment, accidently iodine got mixed up with a biological sample of proteins and polys. Identify the smallest colloid that can be obtained during the process of separation.

(a) Fats
(b) Amino acids
(c) Polys
(d) R molecules

Q7. Time taken to mix the ingredients: 20 sec

(a) 3
(b) 6
(c) 4
(d) 61

Q8. Calculate the size of the colloidal particle present in the mixture of fats and milk from the given data.

(a)
(b)
(c)
(d)

Q9. Where does colloidal solution find application in?

(a) In milk industries
(b) In chromatic chemical industries
(c) In crystallography
(d) In textiles

Q10. Which of the following is a characteristic of a colloid?

(a) It forms 2 layers with a solution
(b) It forms turbid layers
(c) It forms heterogeneous layer
(d) It forms a homogeneous layer

Q11. What is the size of colloidal particles?

(a) 10-20 nm
(b) More than 20 nm
(c) Less than 10 nm
(d) 30 to 50 nm


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