C₂H₆O is the molecular formula for two compounds A and B. They have different structural formula.

i) What is this phenomenon known as?

ii) Give the structural formula of A and B.

iii) Write down their common and IUPAC names.

iv) Mention the functional groups of A and B.

An organic compound (A) is widely used as a preservative in pickle and has a molecular formula C₂H₄O₂. This compound reacts with ethanol to form a sweet smelling compound

(B).

(i) Identify the compounds A and B.

(ii) Name the process and write the corresponding chemical equation.

An organic compound (A) of molecular formula C₂H₆O on oxidation with alkaline KMnO₄ solution gives an acid (B) with the same number of carbon atoms. Compound A is used as an antiseptic to sterilize wounds, in hospitals. Identify A and B. Write the chemical equation involved in the formation of B from A.

Rewrite the following choosing the correct word from each pair given in brackets:

The hydrocarbons containing at least one carbon to carbon _______________ (double/triple) bond are called __________(alkenes/alkynes).They have the general formula C_nH_2n.These were previously called ______________(olefins/paraffins). When this compound is treated with ____________(bromine/lime) water, decolourisation occurs because it is _____________(saturated/unsaturated).

Identify the compounds using the clues given below:

i) This is a dark coloured syrupy liquid containing 30% of sucrose.

ii) During manufacture of ethanol this is added as food for yeast.

iii)This enzyme converts sucrose into glucose and fructose.

iv) This compound contains 95.5% ethanol and 4.5% water.

v) This compound contains 100% pure alcohol.