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NCERT-CHEMISTRY IN EVERYDAY LIFE-Exercise
- Low level of noradrenaline is the cause of depression. What type of dr...
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- What is meant by the term ‘broad spectrum antibiotics’ ? Explain.
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- How do antiseptics differ from disinfectants ? Give one example of eac...
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- Why are cimetidine and ranitidine better antacids than sodium hydrogen...
01:24
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- Name a substance which can be used as an antiseptic as well as disinfe...
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- What are the main constituents of dettol ?
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- What is tincture of iodine ? What is its use ?
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- What are food preservatives ?
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- Why is use of aspartame limited to cold foods and drinks ?
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- What are artificial sweetening agents ? Give two examples.
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- Name the sweetening agent used in the preparation of sweets for a diab...
01:01
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- What problem arises in using alitame as artificial sweetener ?
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- How are synthetic detergents better than soaps ?
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- Explain the following terms with suitable examples (i) cationic dete...
08:53
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- What is the biodegradable polymer?Give an example of a biodegradable a...
01:33
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- Why do soaps not work in hard water ?
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- Can you use soaps and synthetic detergents to check the hardness of wa...
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- Explain the cleansing action of soaps.
02:53
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- If water contains dissolved calcium hydrogencarbonate, out of soaps an...
01:50
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- Label the hydrophilic and hydrophobic parts in the following compounds...
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