Which option contains a group of basic substances?
Answer and explanation
Correct answer: Soap, lime water and sodium hydroxide
The governing concept is the identification of bases by their alkaline nature. Soap solution is generally basic, lime water contains calcium hydroxide and is basic, and sodium hydroxide is a strong base. Thus option A contains only basic substances. The substances in options B and C are acidic foods or liquids, while option D contains strong mineral acids and lemon juice, so those groups cannot be correct.
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What is the correct answer to this question?
Soap, lime water and sodium hydroxide
Why is this the correct answer?
The governing concept is the identification of bases by their alkaline nature. Soap solution is generally basic, lime water contains calcium hydroxide and is basic, and sodium hydroxide is a strong base. Thus option A contains only basic substances. The substances in options B and C are acidic foods or liquids, while option D contains strong mineral acids and lemon juice, so those groups cannot be correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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