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 Multiple Choice QuestionsShort Answer Type

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91.

Why are cimetidine and ranitidine better antacids than sodium hydrogencarbonate or magnesium or aluminium hydroxide?


Antacids such as sodium hydrogen carbonate, magnesium hydroxide, and aluminium hydroxide work by neutralizing the excess hydrochloric acid present in the stomach. However, the root cause for the release of excess acid remains untreated.

Cemetidine and ranitidine are better antacids because they prevent the interaction of histamine with the receptors present in the stomach wall. This results in release of lesser amount of acid. This helps in quick healing of ulcers.
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92.

Can aspartame be used as artifical sweetner by all people. Explain. 

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93. Why is use of aspartame is limited to cold food and soft drinks?
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94.

What are artificial sweetening agents? Give two examples.

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95. What problem arises in using alitame as artificial sweetener?
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96. How are synthetic detergents better than soaps? 
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 Multiple Choice QuestionsLong Answer Type

97.

Explain the following terms with suitable examples:
(i) cationic detergents,
(ii) anionic detergents and
(iii) neutral detergents.

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 Multiple Choice QuestionsShort Answer Type

98.

What are biodegradable and non-biodegradable detergents? Give one example of each.

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99.

Why do soaps not work in hard water?

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100.

Can you use soaps and synthetic detergents to check the hardness of water?

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