Detergents

Q.

Define biodegradable and non-biodegradable detergents.?

Q. Species having a positive or negative charge are called ________.

1. ions
2. atoms
3. molecules
4. electrons

Q. Soaps are sodium or potassium salts of long chains of carboxylic acids.

1. False
2. True

Q.

Polyethylene glycols are used in the preparation of which of the following cleansing agents?

1. Soaps

2. Anionic detergents

3. Cationic detergents

4. Non-ionic detergents

Q. Which of the following should be preferably used to avoid the scum formation during washing clothes?

1. Soap nut
2. Synthetic detergents
3. Soft soap
4. Natural detergents

Q. Mention few differences between soaps and detergents.
(3 marks)

Q. Assertion :2-butyne on treatment with $NaN{H}_2$ followed by acidifictaion yields 1-butyne. Reason: Alkynes isomerizes on treatment with a strong base.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Detergent action of soap is due to

1. Emusification properties
2. Hydrolysis
3. lonization
4. High molecular weight

Q. Which of the followings is an example of liquid dish washing detergent?

1. $C_{15}{H}_{31}COOK$
2. $[C{H}_3-N(C{H}_3{)}_3{]}^{+}B{r}^{-}$
3. $C{H}_3-\left(C_6{H}_4\right)-OS{O}_{3}Na$
4. $C{H}_3\left(C{H}_2{)}_{16}COO\right(C{H}_{2}C{H}_{2}O{)}_{n}C{H}_{2}C{H}_{2}OH$

Q. A solution of detergent is added to the mixture of oil and water. What will you observe on shaking the above mixture?

1. Oil floats on the water
2. Solution becomes homogeneous
3. Solution becomes milky in appearance
4. Solution becomes transparent

Q. Which of the following substance(s) will not perform neutralisation reaction with vinegar?

Q.

State the principle on which the cleansing action of soap is based. [3 MARKS]