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Asalts
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Calkalis
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Answer & Solution
Correct answer: C. alkalis
1. Many bases are insoluble in water.
2. Bases that dissolve in water are called **alkalis** (e.g. NaOH, KOH).
3. Alkalis produce OH⁻ ions in solution.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch2 'Acids, Bases and Salts', §2.1-2.3_
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