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प्रश्न
Use of synthetic detergents causes pollution of water.
उत्तर
Synthetic detergents are not biodegradable, as they can not be decomposed by microorganisms such as bacteria. Since, they don't decompose, they pollute water bodies like rivers and lakes.
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संबंधित प्रश्न
A student takes about 4 ml of distilled water in four test tubes marked P, Q, R and S. He then dissolves in each test tube an equal amount of one salt in one test tube, namely sodium sulphate in P, potassium sulphate in Q, calcium sulphate in R and magnesium sulphate in S. After that he adds an equal amount of soap solution in each test tube. On shaking each of these test tubes well, he observes a good amount of lather (foam) in the test tube marked
(A) P and Q
(B) Q and R
(C) P, Q and S
(D) P, R and S
Why does micelle formation take place when soap is added to water? Will a micelle be formed in other solvents such as ethanol also?
State one use of saponification process.
Fill in the following blank with suitable word:
............. is better than soap for washing clothes when the water is hard.
Why have detergents replaced soap as a washing agent?
How is soap made? Write a word equation involved in soap making.
The chemical mostly used in the preparation of most of the soaps we use is
(a) Sodium chloride
(b) Potassium hydroxide
(c) Sodium hydroxide
(a) Potassium chloride
What is a soap?
Explain why soap cannot be used in hard water.
______ molecules go and join with dirt and oil in the cloth.
