Write short notes on:
Vinegar

Write a short note on:                                                                                                                                                                                          Glacial acetic acid

In washing powders, certain chemicals are added to impart the under mentioned properties. Name the chemical used for each property:
(a) Keeps the dirt suspended in water.
(b) Removes dust particles.
(c) Keeps the washing powder dry.
(d) Imparts whiteness.