AIIMS2008Chemistry-Physical Chemistry
AIIMS 2008 Chemistry Acids and Bases MCQ Question
Type: MCQ-conceptual-Medium-Class 11
The correct order of increasing [H₃O⁺] in the following aqueous solutions is
A
0.01 M H₂S < 0.01 M H₂SO₄ < 0.01 M NaCl < 0.01 M NaNO₃
B
0.01 M NaCl < 0.01 M NaNO₃ < 0.01 M H₂S < 0.01 M H₂SO₄
C
0.01 M NaNO₃ < 0.01 M NaCl < 0.01 M H₂S < 0.01 M H₂SO₄
D
0.01 M H₂S < 0.01 M NaNO₃ < 0.01 M NaCl < 0.01 M H₂SO₄
Correct Answer
Option C
Detailed Explanation
H2SO4 is strong acid having pH < 7. NaNO2 on hydrolysis gives alkaline solution of pH > 7.
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