MCQ on Detergents: Chemistry Quiz

mcq on Detergents

Question 1. What is detergent?

(A) Refining agent

(B) Catalyst

(C) Medicine

(D) Soap

View Answer
(A) Refining agent

Question 2. Which one of the following is used in the manufacture of soaps?

(A) Cutting oil

(B) Kerosene oil

(C) Mobil oil

(D) Vegetable oil

View Answer
(D) Vegetable oil

Question 3. Soap removes grease by_____.

(A) Osmosis

(B) Emulsification

(C) Adsorption

(D) Coagulation

View Answer
(B) Emulsification

Question 4.

  • Assertion (A): Detergent easily removes oil and dirt from dirty garments.
  • Reason (R): Detergent increases the surface tension of water.

(A) (A) is false, but (R) is true

(B) (A) is true, but (R) is false

(C) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

(D) Both (A) and (R) are true and (R) is the correct explanation of (A)

View Answer
(B) (A) is true, but (R) is false

Question 5.

  • Assertion (A): Synthetic detergents can make more lather in hard water.
  • Reason (R): Synthetic detergents form soluble calcium and magnesium salts with hard water.

Code:

(A) (A) is false, but (R) is true

(B) (A) is true, but (R) is false

(C) Both (A) and (R) are true, but (R) is not the correct
explanation of (A)

(D) Both (A) and (R) are true and (R) is the correct explanation of (A)

View Answer
(D) Both (A) and (R) are true and (R) is the correct explanation of (A)

Question 6. Consider the following statements. Sodium silicate and sodium sulphate are mixed as detergents in washing powders so that

  1. To maintain dryness of the powder.
  2. To maintain the basicity of powder.

Which of the following statement is correct?

(A) Only 1

(B) Both 1 and 2

(C) Only 2

(D) None of these

View Answer
(B) Both 1 and 2