Gujarat BoardEnglish MediumSTD 7ScienceAcids, Bases and Salts1 Mark
MCQ
Which of the following is a strong Base?
A
Copper hydroxide
✓
Sodium hydroxide
C
Iron hydroxide
D
Calcium oxide
✓
Answer
Correct option: B.
Sodium hydroxide
Sodium hydroxide is a strong base because it dissociates completely in an aqueous solution to form sodium cations, $Na^+,$ and hydroxide anions $,OH^−.$ Sodium hydroxide is completely ionic, containing sodium ions and hydroxide ions.
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