Q.

Select the polar covalent molecules among the following pool: 

CaF, H2O, HF, Cl2, HCl, O2, N2, KCl, MgO, NH3 

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a

HF, Cl2, HCl only 

b

CaF, H2O, HF only 

c

O2, N2, KCl, MgO only 

d

H2O, HF, HCl, NH3 only 

answer is B.

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Detailed Solution

H2O, HF, HCl, NH3 are polar covalent molecules. Polar covalent bond is a type of covalent bond formed between two non-identical atoms. 7. 

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