Soap and Detergent Manufacture

Chemistry ⇒ Industrial Chemistry

Soap and Detergent Manufacture starts at 11 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Soap and Detergent Manufacture. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.

See sample questions for grade 11

Calculate the mass of sodium hydroxide required to completely saponify 10 g of pure stearic acid (C₁₇H₃₅COOH). (Molar mass of stearic acid = 284 g/mol, NaOH = 40 g/mol)

Describe the difference between anionic and cationic detergents in terms of their structure and use.

Describe the environmental impact of phosphates in detergents.

Describe the role of builders in detergent formulations.

Describe the role of surfactants in detergents.

Explain the term 'anionic detergent' and give an example.

Explain the term 'biodegradable detergent'.

Explain the term 'micelle' and its importance in cleaning action.

Explain why potassium soaps are used in shaving creams.

Explain why soap is less effective in acidic water.

Explain why soaps are not effective in hard water.

Name the by-product formed during the saponification process.

State one advantage of using detergents over soaps in hard water.

State one reason why synthetic detergents are preferred over soaps for laundry purposes.