Soaps and Their Cleansing Action

Q.

Difference between soap and detergent?

Q. Question 9
The Soap molecule has a
(a) Hydrophilic head and hydrophobic tail
(b) Hydrophobic head and hydrophilic tail
(c) Hydrophobic head and hydrophobic tail
(d) Hydrophilic head and hydrophilic tail

Q. Why is soap slippery? Is it basic in nature

Q.

What will be the structure of micelles if soap is dissolved in a hydrocarbon?

Q. Are soap molecules hydrophobic or hydrophilic in nature

Q.

Draw neat labelled diagrams to show the hydrophobic and hydrophilic ends of a soap and micelle. [3 MARKS]

Q. Soaps are sodium or potassium salts of long chain ___.

1. carboxylic acids
2. sulphonic acids
3. ketones
4. aldehydes

Q. Cleansing action of soap is due to the formation of micelles.

1. True
2. False

Q.

Compare soaps and detergents on the basis of their composition and cleansing action in hard water.

Q.

The soap molecule has a

1. hydrophilic head and a hydrophobic tail

2. hydrophobic head and a hydrophilic tail

3. hydrophobic head and a hydrophobic tail

4. hydrophilic head and a hydrophilic tail

Q.

Differentiate between a soap and a detergent on the basis of their chemical constituents. For cleansing action why is a detergent preferred to a soap ?

Q. What change will you observe if you test soap with litmus paper (red and blue)?​

Q.

What are micelles and 3 diffrence between soaps and detergents

Q. Write the two differences between the chemical composition of soaps and detergents

Q. What is a soap? Describe the structure of a soap molecule with the help of a diagram.

Q. What are soaps?
[2 Marks]

Q. Which of the following substance has bitter taste?

1. Milk
2. Amla
3. Soap solution
4. Salt solution

Q. Write any two observations that can be made, when soap is added to the sample of hard water and write two reasons for your observations.

Q.

state reason why:1)soaps do not work well in hard water.2)synthetic detergents are better than soaps

Q. Glycerol is used in manufacturing of moisturising soaps.

1. True
2. False

Q. Detergents produce lather in both soft and hard water easily.

1. False
2. True

Q. Soap is not effective in hard water.

1. True
2. False

Q.

Difference between soaps and detergents ?

Q. Label the parts of micelle.

1. Dirt
2. Hydrophilic head
3. Hydrophobic tail

Q. The cleaning action of soap is due to the formation of ___ in water.

Q. Soaps are sodium or potassium salts of long chain ___.

1. carboxylic acids
2. aldehydes
3. sulphonates
4. ketones