Soap and Detergent

What country created the first synthetic detergent?

• Egypt

• Germany

• Rome

• Spain

How did soap-making become widespread in the 18th century?

• To treat skin diseases

• To do laundering and washing with much less effort

• To produce a luxurious cleaning agent among rich people

• To advertise campaigns on personal hygiene and health

Which of the following is NOT an ingredient in soap-making?

• Animal fats

• Hydrocarbon from petroleum

• Natural raw material

• Vegetable oils

Which is effective even with the use of hard water?

• Detergent

• Soap

• Both a and b

• None of the choices

What alkali can be added to make soft soap?

• Caustic soda

• Potassium hydroxide

• Soda ash

• Sodium hydroxide

What is the use of the hydrophobic end of the chemical composition of soap and detergent?

• It attracts water.

• It attracts greasy and oily stains.

• It gets rid of the water content of the stain.

• It removes the surface tension of the water.

Which is biodegradable and has less environmental impact?

• Detergent

• Soap

• Both a and b

• None of the choices

What are the chemicals that change the properties of water by lowering the surface tension?

• Alkali

• Builders

• Petrochemicals

• Surfactants

How can you take good care of the environment even with the use of soap and detergent?

• Use detergent water on plants.

• Reuse the laundering water in cleaning the bathroom.

• Connect household sewage systems to rivers and lakes.

• Do washing and laundering on nearby rivers or lakes to save water.

How can you get the best cleaning result during laundering?

• Soak the clothes with plain water overnight.

• Wash white and colored clothes at the same time.

• Using cold water can easily remove the grease and stains.

• Rub the clothes using detergent and nylon mesh or scrubbing pad.