A salt is dissolved in water and the pH of this salt solution is measured with a universal indicator paper. If the pH of the solution is less than 7">

table style=width:80%">A salt is dissolved in water and the pH of this salt solution is measured with a universal indicator paper. If the pH of the solution is less than 7


Correct Answer: (d) NH4Cl

Explanation: pH of an acid is less than 7. As the aqueous solution of NH4Cl produces HCl (strong acid). Therefore, it will show a pH of less than 7.

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