Why Do We Fall ill : NCERT Exercise Questions


Q.1    How many times did you fall ill during the last year? What were the illnesses ?
          (a) Think of one change you could make in your habits in order to avoid any of the above illnesses.
          (b) Think of one change you would wish for, in your surroundings in order to avoid any  of the above illnesses.
Sol.    Three times in the last year. Name of the diseases - malaria, dysentery, viral fever.
          (a) Change in habit
          (i) avoiding accumulation of stagnant water to avoid mosquito breeding.
          (ii) use of spray and other measures to kill mosquitoes.
          (iii) keeping the surroundings clean.
          (iv) Use of nourishing food and safe water. Avoiding exposed food and unfiltered water.
          (v) Personal hygiene. (Comment : to be checked by the subject teacher)
          (b) One change in surroundings - Avoiding accumulation of garbage and stagnant water in the surroundings

 Q.2     A doctor / nurse / health - worker is exposed to more sick people than other in the community. Find out how she / he avoids getting sick herself / himself.
Sol.      A doctor / nurse / health - work avoid getting sick herself / himself by
            (i) Observing personal hygiene rules, i.e., personal cleanliness washing hand with antiseptics like, dettol / savlon etc. after handing equipment, clothes etc. of patients.
            (ii) Use of mask to cover the mouth and nose to avoid infection through air (droplets thrown during sneezing or coughing of the patient).
            (iii) Avoiding direct physical contact i.e. use of hand gloves.
            (iv) They have no sexual contact with the sick people.
            (v) They avoid sharing of food items or water used by the patient.
            (vi) Keep the surroundings clean.
            (vii) They eat sufficient and nourishing food to keep their immune system healthy.
            (viii) Undergo immunization time to time regularly.

Q.3     Conduct a survey in your neighborhood to find out what the three most common diseases are. Suggest three steps that could be taken by your local authorities to bring down the occurrence of these diseases.
Sol.     Common diseases are dysentery, malaria, viral fever / jaundice. Preventive measures:
           (i) Cleanliness of the surroundings i.e. removal of garbage from the streets / houses and  storing it in a covered place till it is disposed off.
           (ii) Removal of ditches where water stagnates as it is the breeding place of mosquitoes.Spray of chemicals / smoke in the surroundings to kill mosquitoes.
           (iii) Ensure supply of safe drinking water. (or) periodical programmers to educate people  about prevention of diseases.

Q.4     A baby is not able to tell her / his caretakers that she / he is sick. What would help us to find out.
           (a) That the baby is sick?
           (b) What is the sickness?
Sol.     (a) The symptoms and signs can tell that the baby is sick. Symptom may be cough,loose
motions, wound with pus, vomiting etc.
           (b) (i) Signs will give a little more definite indication of the presence of a particular disease. For example, yellow colour of the eyes, skin etc. indicate jaundice.
           (ii) To be confirmed, further laboratory tests should be done.

Q.5     Under which of the following conditions is a person most likely to fall sick?
Sol.     (a) When she is recovering from malaria.
           (b) When she has recovered from malaria and is taking care of someone suffering from chicken - pox.
           (c) When she is on a four- day fast after recovering from malaria and is taking care of someone suffering from chicken pox. Since during lack of proper and sufficient food, the immune system will not be functioning properly.

 Q.6     Under which of the following conditions are you most likely to fall sick?
Sol.      (a) When you are taking examinations.
            (b) When you have traveled by bus or train for two days.
            (c) When your friend is suffering from measles. It is because when your friend is suffering form measles, you are likely to visit him to ask his welfare. Measles is infectious disease, which spreads through air, disease is transmitted by droplets thrown in the air during sneezing, coughing nasal discharge etc. So, you are most likely to get infected by the disease.      

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