Caustic Soda is extensively used for making __________?
Correct answer: B. Soap
- A. Surf
- B. Soap
- C. Plaster of Paris
- D. Gum
Explanation
Caustic soda, or sodium hydroxide, reacts with fats and oils in saponification to make soap. Plaster of Paris is made from gypsum, not sodium hydroxide.
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About Chemistry in Daily Life
Chemical principles appear in acids, bases, salts, solutions, oxidation, combustion, corrosion and neutralisation, along with the composition and uses of common substances. Coverage includes soaps and detergents, fertilizers, medicines, food preservatives, polymers, fuels and water treatment, while distinguishing physical changes from chemical reactions.
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