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Question
Write ‘four’ physical methods of preserving food materials
Solution
Food preservatives
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Chemicals that prevent food from spoilage due to microbial growth
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Example: Table salt, vegetable oil, sodium benzoate (C6H5COONa), salts of propanoic acid
- Physical methods:
a. By removal of heat
b. By addition of heat
c. By removal of water
d. By irradiation
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(iv) Name the sweetening agent used in the preparation of sweets for a diabetic patient.
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On the occasion of World Health Day, Dr. Satpal organized a ‘health camp’ for the poor farmers living in a nearby village. After check-up, he was shocked to see that most of the farmers suffered from cancer due to regular exposure to pesticides and many were diabetic. They distributed free medicines to them. Dr. Satpal immediately reported the matter to the
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(ii) What type of analgesics are chiefly used for the relief of pains of terminal cancer ?
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Why do we require artificial sweetening agents?
What are food preservatives?
Why is use of aspartame limited to cold foods and drinks?
What are artificial sweetening agents? Give two examples.
Name a sweetening agent used in the preparation of sweets for a diabetic patient.
Explain any two chemical methods of food preservation.
Among the following, which one acts as a food preservative?
Aspartame, Aspirin, Sodium Benzoate, Paracetamol
Why the use of alitame as an artificial sweetener is not recommended?
Which of the following are not used as food preservatives?
(i) Table salt
(ii) Sodium hydrogencarbonate
(iii) Cane sugar
(iv) Benzoic acid
What is the difference between saccharin and saccharic acid?
Name an artificial sweetener which is derivative of sucrose.
Aspartame is unstable at cooking temperature, where would you suggest aspartame to be used for sweetening?
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Reason: All these chemicals increase the nutritive value of the food.
Assertion: Artificial sweeteners are added to the food to control the intake of calories.
Reason: Most of the artificial sweeteners are inert and do not metabolise in the body.
Of the following properties about thiosulphate, which one is not applicable?
