Question detail
Which of the following is an example of a soluble alkali?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reactivity of metals
Question
- A. Copper(II) oxide
- B. Sodium hydroxide
- C. Iron(III) oxide
- D. Calcium carbonate
Answer
Sodium hydroxide
Explanation
Sodium hydroxide is a soluble alkali that dissolves in water to form an alkaline solution.
Common mistake
Confusing Bases and Alkalis
Students often confuse insoluble bases with soluble alkalis, thinking all bases dissolve in water.
Remember that soluble bases are called alkalis, while insoluble bases do not dissolve in water. Use examples to differentiate between them.
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