2. Salts quiz

What is the common name for the salt formed by the combination of hydrochloric acid and sodium hydroxide solution?

• Sodium chloride
• Sodium hydrochloride
• Sodium oxide
• Sodium sulfate

How is rock salt formed, and where is it commonly found?

• Large crystals formed from dried-up seas
• Volcanic rock with high sodium content
• Mineral found in freshwater lakes
• Salt extracted from seawater

What symbolic role did sodium chloride play in Mahatma Gandhi's Dandi March?

• Weapon
• Representation of salt's importance in the freedom struggle
• Cooking ingredient
• Trade commodity

In the chlor-alkali process, what is produced at the cathode?

• Chlorine gas
• Sodium hydroxide solution
• Hydrogen gas
• Oxygen gas

What is the chemical formula for bleaching powder?

• CaCl2
• CaOCl2
• NaCl2
• NaOCl

What is the common name for sodium hydrogencarbonate?

• Sodium chloride
• Sodium carbonate
• Baking soda
• Bleaching powder

How is carbon dioxide produced when baking soda is used in cooking?

• Released from the water
• Generated by a chemical reaction with acids
• Natural property of baking soda
• Obtained from the air

What is the primary use of sodium hydrogencarbonate in antacids?

• Provides flavor
• Acts as a preservative
• Neutralizes excess stomach acid
• Enhances digestion

How is washing soda obtained from sodium chloride?

• By heating sodium chloride
• By adding water to sodium chloride
• By recrystallizing sodium carbonate
• By reacting sodium chloride with acids

What is the purpose of sodium carbonate (washing soda) in the removal of permanent water hardness?

• Softens the water
• Increases water hardness
• Purifies the water
• Enhances the taste of water