Question

Assertion: A basic solution has more hydrogen ions than an acidic solution.
Reason: $pH$ is defined as the $-\log \left[H^{+}\right]$.

• A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
• B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
• C. Assertion is true but Reason is false
  
• D. Assertion is false but Reason is true
• E. Both Assertion and Reason are false

Answer 1

The correct option is D

Assertion is false but Reason is true

$pH=-log\left[H^{+}\right]$ ,
If the concentration of the Hydrogen ion, $\left[H^{+}\right]$ is larger then $pH$ value will be less, hence, solution will be acidic.
And if the concentration of Hydrogen ion, $\left[H^{+}\right]$ is lesser then $pH$ value will be larger, hence, solution is basic .