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| Q. |
Synthetic detergents are prepared from |
| A. | potassium salts of higher fatty-acids |
| B. | sodium salts of higher fat acids |
| C. | hydrocarbons of petroleum |
| D. | glycerides |
| Answer» C. hydrocarbons of petroleum | |
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Explanation: Synthetic detergents are prepared from hydrocarbons of petroleum. They are sodium salts of long chain benzene sulphonic acids or sodium salts of long chain alkyl hydrogen sulphates. Calcium and magnesium salts of detergents are soluble in water. Therefore cleansing action of detergents remains unaffected in hard water. |
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