Question

Five solutions $A,B,C,D,E$ when tested with universal indicator showed $pH$ as $4,1,11,7$ and $9$ respectively. Which solution is strongly acidic?

• A. $A$
• B. $B$
• C. $C$
• D. $D$

Answer 1

The correct option is B $B$

Five tubes $A,B,C,D,E$ have solution with $pH$ as $4,1,11,7$ and $9$ respectively. $A$ and $B$ tubes are acids as they have $pH$ less than $7$ while $D$ is neutral and $C$ and $E$ are bases as they have $pH$ more than $7$. The tube $B$ is strongly acidic as it has the lowest $pH$ value and the greatest acidic strength.