Cleaning Agents

What of the following is true about soap or detergent?

• Detergent forms scum in hard water

• Soap forms scum in soft water

• Scum decreases the effectiveness of the cleansing action of a soap

• The presence of magnesium ions in detergent forms scum

What is the substance?

• Soap

• Detergent

• Sulphuric acid

• Carboxylic acid

Which substance is commonly used to manufacture dyes and detergents?

• Sulphuric acid

• Phosphoric acid

• Sodium chloride

• Ammonium chloride

What is the name of the reaction?

• Fermentation

• Esterification

• Saponification

• Vulcanisation

Why is sodium chloride used in the preparation of soap?

• To speed up the reaction to produce soap

• To produce soap which foams easily

• To reduce solubility of soap

• To make soap softer

Which statements are correct about soap and detergent?

• Soap: Contains acid

  Detergent: Contains alkali

• Soap: Effective in hard water

  Detergent: Less effective in hard water

• Soap: Made from vegetable oil

  Detergent: Made from petroleum

• Soap: Does not form scum in hard water

  Detergent: Forms scum in hard water

Which of the following best explains the effectiveness of detergent and soap?

• Detergent and soap are soluble in water

• Detergent and soap are soluble in grease

• Detergent is more biodegradable than soap

• Detergent does not form scum with hard water but soap does

Name the part of soap anion and detergent anion that is soluble in water.

• Hydrophobic

• Hydrophilic

Name the part of soap anion and detergent anion that is soluble in grease or oil.

• Hydrophilic

• Hydrophobic

To remove protein stains, such as blood, milk and sugar.

• Biological enzyme

• Whitening agent

• Optical whitener

• Water softener and builder