Explain the terms i] Denaturated alcohol ii] Glacial acetic acid iii] Esterification 

Glacial acetic acid is obtained by

Explain the terms (i) stress, (ii) strain.

Why is pure acetic acid known as glacial acetic acid?

Explain the terms (i) Attenuation and (ii) Demodulation used in Communication System.

(i) Why is pure acetic acid known as glacial acetic acid? (ii) Give a chemical equation for the reaction between ethyl alcohol and acetic acid.

Explain the terms (i) fundamental frequency (ii) harmonics and (iii) overtones.

Give reasons for the following: Concentrated sulphuric acid maybe added during esterification of acetic acid.