Question

Which one of the following is a strong base?

• A. $NaOH$
• B. $KOH$
• C. $Ca(OH)_{2}$
• D. $Mg(OH)_{2}$

Answer 1

Answer: (B)

$KOH$

Answer 2

Alkali metal hydroxides are the strongest of all bases and on moving down the group strength of the bases increases. Hence, $KOH$ is the strongest base.