Q17 of 270 Page 96

Write the chemical name and formula of (a) common salt, and
(b) caustic soda.

(a) Common salt- Chemical name is sodium chloride. Chemical formula is NaCl.

(b) Caustic soda- Chemical name is Sodium hydroxide Chemical formula is NaOH.

Which compound is used as an antacid in medicine: NaHCO₃ or Na₂CO₃?

What is the common name of

(a) NaHCO₃ or Na₂CO₃.10H₂O?

What are the two main ways in which common salt (sodium chloride) occurs in nature?

Name the major salt present in sea- water.

Write the chemical name and formula of (a) common salt, and(b) caustic soda.