Short Answer TypeDescribe the following with suitable examples: (i) Preservatives, (ii) Tranquilizers.
Mr. Roy, the principal of one reputed school organized a seminar in which he invited parents and principals to discuss the serious issue of diabetes and depression in students. They all resolved this issue by strictly banning the junk food in schools and to introduce healthy snacks and drinks like soup, lassi, milk etc. in school canteens. They also decided to make compulsory half an hour physical activities for the students in the morning assembly daily. After six months, Mr. Roy conducted the health survey in most of the schools and discovered a tremendous improvement in the health of students.
After reading the above passage, answer the following:
(i) What are the values (at least two) displayed by Mr. Roy?
(ii) As a student, how can you spread awareness about this issue?
(iii) What are tranquillizers? Give an example.
(iv) Why is use of aspartame limited to cold foods and drinks?
What are isotonic solutions?
Isotonic solutions are those solutions that have the same osmotic pressure at a given temperature. An isotonic solution refers to two solutions having the same osmotic pressure across a semipermeable membrane. For example, 0.9% sodium chloride, commonly called the normal saline Normal saline solution contains 0.9% sodium chloride and is primarily used as the intravenous fluid in medical settings.
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