Description : (3) Detergents give lather even with hard water Explanation: Soaps are made of materials found in nature. Detergents are synthetic a big drawback of washing with soap is that the minerals in water ... ions in hard water to create an insoluble residue that can clog drains and stick to clothing.
Last Answer : What is the objective of the 'Kyoto Protocol'? (1) To abolish child labour (2) To eliminate nuclear weapons (3) To increase ground water levels (4) To reduce greenhouse gases
Description : (3) Detergents give lather even with hard water Explanation: Soaps are made of materials found in nature. Detergents are synthetic. a big drawback of washing with soap is that the minerals in water ... ions in hard water to create an insoluble residue that can clog drains and stick to clothing.
Last Answer : Cement is usually a mixture of – (1) Calcium silicate and calcium alurninate (2) Calcium silicate and calcium ferrate (3) Calcium aluminate and calcium ferrate (4) Lime stone and silicon dioxide
Description : Pick out the wrong statement. (A) Eosin requirement in tallow soap is about 40-50% which fastens the lather formation, softens the hard soaps and increases its cleansing action (B) Soap powder is ... ., Benzotriazole) is added in soap to facilitate the removal of stains due to tea, blood etc
Last Answer : (D) Tarnish inhibitor (e.g., Benzotriazole) is added in soap to facilitate the removal of stains due to tea, blood etc
Description : Shaving soaps are (A) Soft potassium soaps (potassium salt of fatty acid) with free Stearic acid to give lather a lasting property (B) Metallic soaps compounded with frothing agents (C) High free alkali soaps having excess of cane sugar and alcohol (D) None of these
Last Answer : (A) Soft potassium soaps (potassium salt of fatty acid) with free Stearic acid to give lather a lasting property
Description : Consider the following statements: 1. Detergents do not produce lather with hard water 2. Water gas is a mixture of carbon monoxide and hydrogen 3. Methane is the chief constituent of CNG 4. LPG contains mainly n-butane 5. The correct ... (b) 1,3 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 only
Last Answer : Ans:(c)
Description : Soaps come in different colours. But why is soap's lather always white in colour?
Last Answer : Lather or foam is nothing but a large collection of small soap bubbles. A soap bubble is , in turn, a very thin film of soap solution enclosing some air. Because of the low surface tension of ... collection of bubbles gets scattered. That is the reason why all kinds of lather or foam appear white.
Description : Saponification of a fat (a) always results in the formation of insoluble soaps (b) produces glycerol and soap (c) is used in the production of detergents (d) is used in the production of lactic acid
Last Answer : produces glycerol and soap
Description : Are any of the major name brand laundry detergents and dish soaps ecofriendly?
Last Answer : I just picked up some Wintree laundry detergent, which claims to be ecofriendly friendly, at Costco.
Description : Explain why hard water produces less lather with soap?
Last Answer : Ans- Hard water forms scum/precipitate with soap. Soap containing sodium stearate (C17H35COONa) reacts with hard water to precipitate out Ca/Mg stearate.
Description : Bile, an emulsifier liquid, is made by the liver and later stored within the gallbladder and released in the duodenum. Bile is composed of bile salts, cholesterol and bile pigments. ... enzymes that break fats into simpler fatty acids and glycerol. Digestion System - Image Diversity: gallbladder
Last Answer : What is the adnexal organ of the digestive system in which bile is stored?
Description : Transparent soaps (e.g. Pears) are (A) Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency (B) ... (C) Metallic soaps with frothing agent from which glycerine has not been recovered (D) None of these
Last Answer : (A) Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency
Description : Advantage of detergents
Last Answer : Advantage of detergents: (a) They work well even with hard water. (b) They are more effective than soaps. (c) They can work well even with acidic water. (d) They can work well with woolen garments.
Description : Hard water (A) Does not affect the lather formation by soap (B) Is not unfit for drinking purpose (C) Pollutes the water stream (D) All (A), (B) and (C)
Last Answer : (B) Is not unfit for drinking purpose
Description : Soap cannot be used with hard water, because (A) Hard water contains sulphate (B) They form insoluble calcium soaps which precipitate (C) They attract back the removed dirt (D) None of these
Last Answer : (B) They form insoluble calcium soaps which precipitate
Description : Which method will be employed to test the hardness of water? (1) Boiling (2) Distillation (3) Formation of lather with soap (4) None of these
Last Answer : (3) Formation of lather with soap Explanation: Soap solution is used to measure the hardness of rain water, temporarily hard water and sea-water. Hard water does not form soap lather. This is ... in hard water react with soap to form calcium stearate or magnesium stearate and thus forms scum.
Last Answer : Formation of lather with soap
Description : A water sample, which did not give lather with soap, was found to contain Ca(HCO3)2 and Mg(HCO3)2.
Last Answer : A water sample, which did not give lather with soap, was found to contain Ca(HCO3)2 and Mg ... with soap? Explain with the help of chemical reactions.
Description : Give reasons for the following observations: (a) The element carbon forms a very large number of compounds. (b) Air holes of a gas burner have to be adjusted when the heated vessels get blackened by the flame. (c) Use of synthetic detergents causes pollution of water. -Chemistry
Last Answer : Answer. (a) Carbon forms large number of compounds since carbon is small in size and can form stable covalent bonds (catenation) and it shows tetravalency. (b) Air holes of gas burner are ... not get blackened. (c) Some synthetic detergents are non-biodegradable, therefore, cause pollution of water.
Description : I am not gaining weight and height, what should I do now ? I am 15 years and 6 months old. Height 5 feet 6 inches. Weight 50 kg. My problem is that I eat and drink properly. I eat milk , ... 'm very tense. Please tell, whats the story of them big puppys ..... I want detailed and accurate answer.
Last Answer : Human height depends on genetic factors. It is not possible to increase or decrease the height if you want. Protein and fat foods can help you gain weight , and you need to drink plenty of water.
Description : Why is diamond hard whereas graphite soft even through both are crystalline forms of carbon?
Last Answer : The reason for difference is because of arrangement of carbon atoms.
Description : Hardness of water is caused by (A) Presence of soap lather (B) Presence of chlorides and sulphates of sodium and potassium (C) Presence of bicarbonates, sulphates or chlorides of calcium and magnesium (D) Turbidity
Last Answer : (C) Presence of bicarbonates, sulphates or chlorides of calcium and magnesium
Description : What are soaps? (1) Salts of silicates (2) Ester of heavy fatty acids (3) Sodium or potassium salts of heavier fatty acids (4) Mixture of glycerol and alcohol
Last Answer : (3) Sodium or potassium salts of heavier fatty acids
Description : Which of the following compounds will not be classified as lipids? (a) Fats (b) Waxes (c) Soaps (d) Oils
Last Answer : Waxes
Description : . Sodium or potassium salts of fatty acids are called (a) Proteins (b) Terpenes (c) Carbohydrates (d) Soaps
Last Answer : Soaps
Description : The advantage of the silicone in soft relining material over ….. rubber is, A. Retains high flow B. Prevents the colonization of Candida albicans C. Resilient in long run D. Better bond strength
Last Answer : C. Resilient in long run
Description : Why does the a bar of soap lather less when it gets smaller?
Last Answer : Less surface area?
Description : Why more lather some days than others?
Last Answer : Do you use hair products? Daily? Shampoo at irregular intervals or like clockwork? Do you live in an area with climate extremes? Antarctica, Amazon rain forest, Gobi Desert, Equador, as examples (or Seattle?)
Description : Why does soap lather less as it gets smaller?
Last Answer : It doesn't. When the bar is big, it's easy to hold and rub against a washcloth and it lathers easily. When small, it's hard to hold and develop the same friction. What my mother used to do was ... she would get them wet and mash them together and set aside to dry. The larger group was easier to use.
Description : Sulphur addition in soap is done to (A) Improve the soap texture (B) Cure pimples & dandruff (C) Fasten lather formation (D) Increase its cleansing action
Last Answer : (B) Cure pimples & dandruff
Description : Synthetic detergents are prepared from (1) potassium salts of higher fatty-acids (2) sodium salts of higher fat acids (3) hydrocarbons of petroleum (4) glycerides
Last Answer : (3) hydrocarbons of petroleum Explanation: Synthetic detergents are prepared from hydrocarbons of petroleum. They are sodium salts of long chain benzene sulphonic acids or sodium salts of long chain ... are soluble in water. Therefore cleansing action of detergents remains unaffected in hard water.
Description : Synthetic detergents are made from – (1) Sodium stearate (2) Sodium salt of benzene sulphonic acid (3) Sodium salt of benzene carboxylic acid (4) Sodium palmitate
Last Answer : (2) Sodium salt of benzene sulphonic acid Explanation: Synthetic detergents are made from sodium salt of benezene sulphonic acid.
Description : Detergents clean surfaces on the principle of – (1) viscosity (2) surface tension (3) elasticity (4) floatation
Last Answer : (2) surface tension Explanation: Detergents and soaps are used for cleaning because pure water can't remove oily, organic soiling. Soap cleans by acting as an emulsifier. Basically, soap ... and World War II. Detergents are primarily surfactants, which could be produced easily from petrochemicals.
Description : Detergents are – (1) Sodium salts of fatty acids (2) Sodium salts of sulphonic acids (3) Sodium salt of benzoic acid (4) None of the above
Last Answer : (2) Sodium salts of sulphonic acids Explanation: A detergent is a surfactant or a mixture of surfactants with "cleaning properties in dilute solutiops." These substances are usually alkylbenzenesulfonates, a ... detergent or dish detergent, as opposed to hand soap or other types of cleaning agents.
Description : Synthetic detergents can be represented by the following general formula (a) RONa (b) ROSO3Na (c) RCOONa (d) RCOOH
Last Answer : ROSO3Na
Description : Synthetic detergents are prepared from (1) potassium salts of higher fatty-acids (2) sodium salts of higher fattyacids (3) hydrocarbons of petroleum (4) glycerides
Last Answer : hydrocarbons of petroleum
Description : Synthetic detergents are made from (1) Sodium stearate (2) Sodium salt of benzene sulphonic acid (3) Sodium salt of benzene carboxylic acid (4) Sodium palmitate
Last Answer : Sodium salt of benzene sulphonic acid
Description : Detergents are (1) Sodium salts of fatty acids (2) Sodium salts of sulphonic acids (3) Sodium salt of benzoic acid (4) None of the above
Last Answer : Sodium salts of sulphonic acids
Description : Detergents clean surfaces on the principle of (1) viscosity (2) surface tension (3) elasticity (4) floatation
Last Answer : surface tension
Description : Detergents used for cleaning clothes and utensils contain (1) nitrates (2) bicarbonates (3) sulphonates (4) bismuthates
Last Answer : sulphonates
Description : Hard water and soft water can be distinguished by using – (1) dilute acid (2) ordinary soap (3) detergent (4) liquid soap
Last Answer : (3) detergent
Description : Out of hard water and soft water which would you like to use for washing of clothes and why?
Last Answer : Ans-Soft water because it does not contain salts of calcium and magnesium (which form precipitate with soaps) and hence give more froth with soap solution.
Description : Hard water and soft water can be distinguished by using (1) dilute acid (2) ordinary soap (3) detergent (4) liquid soap
Last Answer : detergent
Description : Give reason: Domestic waste has a high percentage of detergents.
Last Answer : More people are switching over to synthetic detergents than using traditional soap which is biodegradable. Hence the percentage of detergents in domestic waste is increasing.
Description : Soaps essentially form a colloidal solution in water and remove the greasy matters by :
Last Answer : Soaps essentially form a colloidal solution in water and remove the greasy matters by : A. adsorption B. emulsification C. coagulation D. absorption
Description : For constructing a terrazzo floor, Pick up the incorrect statement from the following: (A) A base course is prepared as in cement concrete flooring (B) A 32 mm thick layer of cement concrete ... final grinding is over, oxalic acid mixed with water is spread over and rubbed hard with soft material
Last Answer : Answer: Option B
Description : Sodium calcium silicate is called _______. (1) Hard glass (2) Borosilicate glass (3) Soft glass (4) Jena glass
Last Answer : (3) Soft glass Explanation: Ordinary glass which is also known as soda glass or soft glass is a mixture of sodium silicate, Calcium silicate, and Silica.
Description : Which one of the following statements is not correct? Vulcanisation of rubber makes it - (1) soft and flexible (2) strong and hard (3) chemical resistant (4) withstand higher temperatures
Last Answer : (1) soft and flexible Explanation: In order to give more strength and more elasticity, natural rubber is heated with sulphur or sulphur compounds at 150°C temperature. Vulcanized rubber has good ... of vulcanized rubber is enhanced up to 100°C. It has good resistance to organic solvents.
Description : Which one of the following statements is not correct? Vulcanisation of rubber makes it (1) soft and flexible (2) strong and hard (3) chemical resistant (4) withstand higher temperatures
Last Answer : soft and flexible
Description : If an intermediary wants to carry Tide detergent and Procter & Gamble agrees only if the supplier purchases P&G's entire line of detergents as well, the company is engaging in which of the ... A)Exclusive dealing B)Dual distribution C)Tying agreement D)Refusal to deal E)Restricted sales territories
Last Answer : C)Tying agreement