Select the correct answer from the choice in brackets.

1. The vapour density of the fifth member of the homologous series of alkanes. [22/36/29]
2. The isomer of pentane which has '1' C atom attached to '4' other C atoms [n-/iso-/neo-] pentane.
3. The IUPAC name of the product of reaction of ethylene with hydrogen bromide, [ethyl bromide/bromoethane/dibromoethane]
4. The IUPAC name of methyl acetylene. [1-butyne/propyne/ethyne]
5. The functional group in ethanoic acid. [aldehydic/carboxyl/hydroxyl]

Draw the branched structural formula of the following organic compounds whose IUPAC names are given below.

1. Pent-1-ene
2. But-2-yne
3. 3-methyl pentane
4. 2-methyl-prop-1-ene
5. Pentan-3-ol
6. 1, 1, 2, 2 tetrabromoethane
7. 2-methyl butan-2-ol
8. 2, 2 dimethylpropan-1-ol
9. 2, 2 dimethyl propane
10. 2-bromo-4-chloro pentane

Give balanced equations for the following conversions.

1. An alkyne to an alkene.
2. An alkene to an alkane.
3. An alkane to an alcohol.
4. An alcohol to an alkene.
5. A carboxylic acid to an ammonium salt

Select from the letters A to G the correct answer corresponding to the statements from 1 to 5 :

   A : Ammoniacal CuCl₂
   B : Trichloromethane
   C : Trichloroethane
   D : Bromine soln.
   E : Aqueous KOH
   F : Ethene
   G : Sodalime
   H : Ethanol
   I : Ethyne

1. The organic compound which forms carbon tetrachloride on reaction with chlorine.
2. The reagent which can distinguish between ethene and ethyne.
3. The substance which reacts with bromoethane to give ethanol.
4. The substance which gives bromoethane on reaction with hydrogen bromide.
5. The substance which reacts with acetic acid to give CH₃COOC₂H₅