Question

Pick the base from the following:

• A. $H_{2}S{O}_4$
• B. $KOH$
• C. $HN{O}_3$
• D. All of these

Answer 1

Answer: (B)

$KOH$

In chemistry, bases are substances that, in aqueous solution, release hydroxide $\left(O{H}^{-}\right)$ ions

$\left(a\right)$ $H_{2}S{O}_4$ is acid $H_{2}S{O}_4⟶H^{+}+HS{O}_4^{-}$

$\left(b\right)$ $KOH$ is base $KOH⟶K^{+}+O{H}^{-}$

$\left(c\right)$ $HN{O}_3$ is acid $HN{O}_3⟶H^{+}+N{O}_3^{-}$

So option $B$ is correct