CONS CHEM - SOAP AND DETERGENT - GRADE 9 QUARTER 3
Quiz by B16 Kelsea Maize
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20 questions
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- Q1Which of the following is a characteristic of soap?Form thick foam that can kill aquatic lifeMost are non-biodegradableEffective and no formation of scumBiodegradable and can easily be broken down by bacteria30s
- Q2What are natural materials used in soap production?Animal fats or vegetable oilsAlkali and sulphuric acidLong chain of carboxylic acidSynthetic materials from petroleum30s
- Q3What are synthetic materials used in detergent production?Hydrocarbon from petroleum or crude oilAlkali and fatty acidSodium or potassium salt of benzene sulphonic acidAnimal fats or vegetable oils30s
- Q4Why are most detergents considered non-biodegradable?Effective and no formation of scumAlkali and sulphuric acidBiodegradable and can easily be broken down by bacteriaMost are non-biodegradable and form thick foam that can kill aquatic life30s
- Q5What is the main reason why soaps are less harmful to the environment compared to detergents?Biodegradable and can easily be broken down by bacteriaMade from synthetic materialsForm thick foam that can kill aquatic lifeEffective in cleaning30s
- Q6Which type of acid is used in the production of soaps?Carboxylic acidAlkyl sulfateSulphuric acidBenzene sulphonic acid30s
- Q7What is the main reason why detergents are preferred for cleaning over soaps?Effective and no formation of scumBiodegradable and easily broken down by bacteriaForm thick foam that can kill aquatic lifeNon-biodegradable30s
- Q8What does hydrophilic mean in the context of soap and detergent?WaterlovingWaterfearingWaterneutralWaterhating30s
- Q9What does hydrophobic mean in the context of soap and detergent?WaterfearingWaterneutralWaterattractingWaterloving30s
- Q10What are triglycerides?Synthetic chemicals used in soap productionMinerals found in soapBacteria found in soapFat storage molecules used by plants and animals30s
- Q11What structures do soap molecules arrange themselves into when shaken with water?ColloidsFoamsMicellesEmulsions30s
- Q12What term describes a very finely dispersed suspension, like soap in water?GelSolutionEmulsionColloid30s
- Q13What is the role of micelles in soap's cleaning action?To dissolve completely in waterTo pick up and hold small oil droplets in their nonpolar interiorTo repel other soap moleculesTo create a protective barrier on surfaces30s
- Q14What are the two major parts of a triglyceride molecule?Glycerol backbone and fatty acid tailsPolar heads and nonpolar tailsHydrophilic region and hydrophobic regionCharged region and uncharged region30s
- Q15What is the source of the hydrocarbon chain in the preparation of soap?Sodium hydroxidePotassium hydroxideGlycerineFatty acid from animal fats and vegetable oils30s