Fill in the blanks with the choices given in the brackets:

(i) Conversion of ethanol to ethene by the action of conc. sulphuric acid is an example of …………… [dehydration/dehydrogenation/dehydrohalogenation]

(ii) Substitution reactions are characteristic reactions of ……………[alkynes/alkenes/alkanes].

A hydrocarbon which is a greenhouse gas is:

A: Acetylene
B: Ethylene
C: Ethane
D: Methane

(i) Give the IUPAC name of the following organic compounds:

(ii) What is the special feature of the structure of ethyne

(iii) Name the saturated hydrocarbon containing two carbon atoms.

(iv) Give the structural formula of acetic acid.

Arrange - Ethane, methane, ethene, ethyne - in increasing order of molecular weight [H = 1, C = 12]