Which of the following statements is correct for a base?
Answer and explanation
Correct answer: It can give hydroxide ions in water
The governing concept is the aqueous behaviour of bases. A base produces hydroxide ions in water, either directly, as sodium hydroxide dissociates into Na⁺ and OH⁻, or through reaction with water. These ions give the solution basic properties; its pH is generally greater than 7. Acids provide hydrogen or hydronium ions, bases turn red litmus blue rather than blue litmus red, and a pH below 7 indicates acidity. Therefore option C is correct.
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What is the correct answer to this question?
It can give hydroxide ions in water
Why is this the correct answer?
The governing concept is the aqueous behaviour of bases. A base produces hydroxide ions in water, either directly, as sodium hydroxide dissociates into Na⁺ and OH⁻, or through reaction with water. These ions give the solution basic properties; its pH is generally greater than 7. Acids provide hydrogen or hydronium ions, bases turn red litmus blue rather than blue litmus red, and a pH below 7 indicates acidity. Therefore option C is 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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