Under which of the following conditions are you most likely to fall sick?
(a) When you are taking examinations.
(b) When you have travelled by bus and train for two days.
(c) When your friend is suffering from measles. Why? Answer
I will be most likely to fall sick when my friend is suffering from measles. This is because in this condition, I will visit my friend and will be likely to get infected with measles. Measeles is an infectious as well as an air-borne disease. When my friend will cough or sneeze, small droplets from his mouth containing microbes will mix in the air. These microbes may be present in the air I will breathe. So, the chance of getting infection will increase. Concept insight: Recall the types of diseases-communicable and non communicable diseases.
Q: 5
Under which of the following conditions is a person most likely to fall sick?
(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. Why? Answer
A person is most likely to fall sick when she is on a four-day fast after recovering from malaria and is taking care of someone suffering from chiken-pox.
This is because immediately after suffering from malaria, the body is still weak, as during malaria a person has loss of appetite, vomiting and fever.
Moreover, the various organ systems are also most likely not properly recovered and the immune system is also comparatively weak. So, she is likely to get infected with chicken-pox herself which can lead to serious health problems.
Concept insight: Recall the types of diseases-communicable and non communicable diseases.
Q: 1
In the given figure, A, B and C are three points on a circle with centre O such that BOC = 30o and AOB = 60o. If D is a point on the circle other