Structural formula of ethyne is:

The class of organic compounds which gives effervescence with NaHCO₃ solution is:

Which of the following is the correct representation of electron dot structure of nitrogen?

Chlorine reacts with saturated hydrocarbons at room temperature in the:

Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g., hydrogen. After the formation of four bonds, carbon attains the electronic configuration of: