Chemistry - CHEMICAL BONDING Question with Solution | TestHub

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Acetylene molecule has$3\mathrm{\sigma }$bonds and$2\mathrm{\pi }$bonds.
H-Cl has only one sigma bond so it is correct.
In water there are 2 sigma bond and 2 lp electrons so it is also correct.

Ethylene has also 5 sigma and one pi bonds so it is also correct.