Which of the following pairs is correctly matched?
(A) \(\text{HCl} \rightarrow \text{acid}\), \(\text{NaCl} \rightarrow \text{base}\)
(B) \(\text{HCl} \rightarrow \text{acid}\), \(\text{NaOH} \rightarrow \text{base}\)
(C) \(\text{CH}_3\text{COOH} \rightarrow \text{alkali}\), \(\text{NaCl} \rightarrow \text{salt}\)
(D) \(\text{NH}_4\text{OH} \rightarrow \text{acid}\), \(\text{H}_2\text{SO}_4 \rightarrow \text{base}\)निम्नलिखित में से कौन-सा युग्म सही सुमेलित (matched) है?
(A) \(\text{HCl} \rightarrow \text{अम्ल}\), \(\text{NaCl} \rightarrow \text{क्षार}\)
(B) \(\text{HCl} \rightarrow \text{अम्ल}\), \(\text{NaOH} \rightarrow \text{क्षार}\)
(C) \(\text{CH}_3\text{COOH} \rightarrow \text{क्षारीय}\), \(\text{NaCl} \rightarrow \text{लवण}\)
(D) \(\text{NH}_4\text{OH} \rightarrow \text{अम्ल}\), \(\text{H}_2\text{SO}_4 \rightarrow \text{क्षार}\)
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: \(\text{HCl} \rightarrow \text{acid}\), \(\text{NaOH} \rightarrow \text{base}\)\(\text{HCl} \rightarrow \text{अम्ल}\), \(\text{NaOH} \rightarrow \text{क्षार}\)
\(\text{HCl}\) is an acid because it releases \(\text{H}^+\) ions in water. \(\text{NaOH}\) is a base because it dissociates to give \(\text{OH}^-\) ions. Therefore the pair \((\text{HCl} \rightarrow \text{acid},\ \text{NaOH} \rightarrow \text{base})\) is correctly matched.\(\text{HCl}\) एक अम्ल है क्योंकि यह पानी में \(\text{H}^+\) आयन मुक्त करता है। \(\text{NaOH}\) एक क्षार है क्योंकि यह \(\text{OH}^-\) आयन देता है। इसलिए युग्म \((\text{HCl} \rightarrow \text{अम्ल},\ \text{NaOH} \rightarrow \text{क्षार})\) सही सुमेलित है।
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