Q. The pair of molecules forming strongest hydrogen bonds are
A) $SiH_{4}$ and $SiF_{6}$
B) $CH_{3} - C - CH_{3}\ and\ CHCl_{3}$
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$\ \ \ \ \ \ \ \ \ \ \ \ \ O$
C) $H - C - OH\$and$\ CH_{3} - C - OH$
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$\ \ \ \ \ \ \ \ O\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ O$
D) $H_{2}O\ and\ H_{2}$
Explanation
(c)
Strongest H-bonds are formed in between HCOOH and $CH_{3}COOH.$ This is because H- bonding increases with electronegativity and decreases with size of atom
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.