Soaps and Detergents

Q. Which of the following is true?

1. Soaps are more effective in hard water than detergents.

2. Detergents are more effective in hard water than soaps.

3. Detergents and soaps are equally effective.

4. The type of water doesn't affect the effectiveness of Detergents or soaps.

Q. A cleaning substance made from animal fat or vegetable oil is called ______ .

1. washing liquid
2. detergent
3. bleaching powder
4. soap

Q. The advantage of detergent over soap is, they are ____________ .

1. cheaper to make
2. biodegradable
3. useful in hard water
4. synthetic

Q. Detergents are sodium or potassium salts of long chain __________.

1. aldehydes

2. ketones

3. carboxylic acids

4. sulphonic acids

Q.

Which of the following pairs are correct?

1. Soap - Ammonium or Sulphonate salts of long chain carboxylic acids,
   Detergent - Sodium or Potassium salts of long-chain carboxylic acids

2. Detergent - Ammonium or Sodium salts of long chain Carboxylic acids,
   ​Soap - Sodium or Sulphonate salts of long-chain Carboxylic acids

3. Detergent - Ammonium or Sulphonate salts of long chain Carboxylic acids,
   ​Soap - Sodium or Potassium salts of long-chain Carboxylic acids

4. Detergents and soaps have the same salts

Q. Identify the hydrocarbon that is an example of a soap molecule.

1. 

2. 

3. 

4. 

Q.

Detergents give scum with hard water.

1. False

2. True

Q. What does oil or fat react with to produce soap and glycerine?

1. $N{a}_{2}C{O}_3$
2. $NaOH$
3. $NaCl$
4. $N{a}_{2}O$

Q. Which of the following substances are needed for the preparation of soap?

1. Fats
2. Carbon dioxide
3. Sulphur dioxide
4. Sodium hydroxide

Q. The hardness of water is due to the presence of:

1. Calcium and Magnesium salts

2. Sodium and Magnesium salts

3. Calcium and Sodium salts

4. Sodium salts