A) \[KCl\]
B) KCN
C) \[C{{H}_{4}}\]
D) \[{{H}_{2}}\]
Correct Answer: B
Solution :
\[\text{KCl}\]has ionic bond between \[{{\text{K}}^{\text{+}}}\]and\[\text{C}{{\text{l}}^{-}}.\text{C}{{\text{H}}_{\text{4}}}\] and \[{{\text{H}}_{\text{2}}}\]have covalent bonds only. In KCN there is ionic bond between \[{{\text{K}}^{\text{+}}}\] and \[\text{C}{{\text{N}}^{-}}\]and C and N are held together by covalent bonds.
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