Equilibrium Quiz 1

Question 1

According to Lowry-Bronsted concept, base is a substance which acts as &ndash;

Accepted Answer

a proton acceptor

Answer

a proton donor

Answer

an electron donor

Answer

an electron acceptor

Question 2

$BF_3 $ is a

Accepted Answer

Lewis acid

Answer

Lewis base

Answer

amphoteric compound

Answer

Electrolyte only

Question 3

Which of the following is a conjugate acid-base pair ?

Accepted Answer

$H_2 SO_4 ,HSO_4^-$

Answer

HCl, NaOH

Answer

KCN, HCN

Answer

$NH_4 Cl, NH_4 OH$

Question 4

The conjugate acid of $NH_2^-$ is

Accepted Answer

$NH_3$

Answer

$NH_2OH$

Answer

$NH_4^+$

Answer

$N_2H_4$

Question 5

Which of the following molecules is not a Lewis base?

Accepted Answer

$BF_3$

Answer

$H_2O$

Answer

$NH_3$

Answer

CO

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