CBSE Class 9 Science Why do we fall ill Sure Shot Questions A

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Study Material for Class 9 Science Chapter 13 Why Do We Fall Ill

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Class 9 Science Chapter 13 Why Do We Fall Ill

CBSE Class 9 Science Why do we fall ill Sure Shot Questions A. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot question banks, quick to learn flash cards, flow charts, mind maps, teacher notes, important formulas, past examinations question bank, important concepts taught by teachers. Students can download these useful educational material free and use them to get better marks in examinations.  Also refer to other worksheets for the same chapter and other subjects too. Use them for better understanding of the subjects.

1. Which one of the following is an infectious disease?

(a) diptheria

(b) diabetes

(c) hypertension

(d) cancer

2. Elephantiasis disease can have

(a) short-term affect on our health

(b) no effect on our health

(c) long term affect on our health

(d) sometimes bad effect on our health

3. Ascaris worm lives in which part of human body?

(a) kidneys

(b) liver

(c) small intestine

(d) large intestine

4. Microbes which enter the body through nose most likely affect

(a) liver

(b) heart

(c) brain

(d) lungs

5. Which of the following is a viral infection?

(a) Dipteria

(b) Influenza

(c) Cholera

(d) Typhoid

6. HIV virus when active in body mainly attacks on

(a) lungs

(b) liver

(c) immunity

(d) nerves

7. An Organism which carries pathogens is termed as

(a) host

(b) vector

(c) parasite

(d) predator

8. Diseases which are always present in certain location are called?

(a) epidemic diseases

(b) endemic diseases

(c) acute diseases

(d) chronic diseases

9. DPT vaccines are administered to develop immunity against

(a) Tetanaus

(b) Diptheria

(c) Pertussis

(d) All of these

10. Anti-viral drugs are difficult to make because, viruses

(a) live outside the host cells

(b) live inside the host cells

(c) live in consumed food particles

(d) live in blood stream

11. BCG vaccine is used to develop immunity against

(a) jaundice

(b) polio

(c) influenza

(d) tuberculosis

12. Which of the following is a communicable disease?

(a) Rickets

(b) Scurvy

(c) Marasmus

(d) Cholera

13. The causative organism for malaria is a:

(a) bacteria

(b) protozoa

(c) virus

(d) fungi

14. Vaccination helps in controlling diseases because

(a) it develops resistance against the pathogen attack

(b) it kills the pathogens causing disease

(c) it blocks the food supplied to pathogens

(d) it does not allow pathogens to multiply in hosts

15. ORS is given in

(a) diarrhoea

(b) measeles

(c) typhoid

(d) tetanus

16. Which of the following is an example of nutritional deficiency disease?

(a) Hypertension

(b) Rickets

(c) Diabetes

(d) Gastroenteritis

17. Define Health? What do you interpret when we say a person is in good health?

18. State any two conditions essential for good health.

19. What are three dimensions of health? Are they interrelated?

20. Kidneys of a person do not filter urine properly. How does it affect physical, mental and social dimensions of that person?

21. State any two conditions essential for being free of disease.

22. Are the answers to the above questions (Q2 and Q5) and necessarily the same or different?Why?

23. What is a balanced diet?

24. A hefty boy of 12 years often picks fights with others. Do you think he is in good health? If so, then explain your answer.

25. How do you define 'disease'?

26. State and explain in brief the four major factors, which are the causes of disease

27. Is there any difference between 'being healthy' and 'disease free'?

28. How do we identify a disease?

29. What is the difference between symptoms and signs of a disease?

30. List any three reasons why you would think that you are sick and ought to see a doctor. If only one of these symptoms were present, would you still go to the doctor? Why or why
not?

31. Based on duration or persistence, how diseases are categorised?

32. Give examples of Acute diseases.

33. Give four examples of Chronic diseases.

34. Differentiate between Acute Diseases and Chronic Diseases.

35. What are congenital diseases? Give two examples of such disease.

36. Name a disease which was earlier considered to be chronic but now can be treated in short duration?

37. 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?

38. What are acquired diseases?

39. Write few common signs and symptoms of a disease if brain is affected.

40. List any two differences between infectious and non-infectious diseases. Write any one example of each disease.

41. What are infectious agents? What are the different infectious agents?

42. What is 'germ theory of disease'? Who proposed it?

43. What are Koch's Postulates?

44. List the diseases caused by viruses?

45. Give three examples of bacterial diseases.

46. Give examples of fungal diseases.

47. List three diseases caused by protozoans.

48. Name the pathogen causes peptic ulcer.

49. List the diseases caused by worms?

50. Name the the protozoan pathogen that causes kala-azar.

51. Name the microbe which causes acne.

52. What is the scientific name of roundworm? Where do we find it commonly in human body? Name the disease caused by it.

53. Why is it important that we think of these categories of infectious agents?

54. How do antibiotics (say Penicillin) work on bacteria but not on human beings?

55. Define antibiotic? Explain how it is able to control bacterial infections but not viral infections.

56. Explain why antibiotics are more effective in curing bacterial diseases than viral diseases.

57. Why taking an antibiotic is not effective in the common cold?

58. Give two examples of bacterial antibiotics.

59. Give an example of fungal antibiotic.

60. Why are we normally advised to take bland and nourishing food when we are sick?

61. What are the different means by which infectious diseases are spread?

62. If a person has persistent cough and breathlessness, most likely which of the following organ is affected

63. What is the alternate name of brain fever? Which vector is responsible for this disease?

64. Name the vector which causes malaria.

65. Name the vector which causes dengue, chikengunia and yellow fever.

66. Name the vector that can cause sleeping sickness.

67. Name the diseases that can spread through housefly.

68. Name the vectors which can cause rabies.

69. A doctor/nurse/health-worker is exposed to more sick people than others in the community.

Find out how she/he avoids getting sick herself/himself.

70. What precautions can you take in your school to reduce the incidence of infectious diseases?

71. What do you mean by immunity?

72. What is immunisation?

73. What is antigen?

74. What are antibodies?

75. What is colostrum? Why is mothers milk strongly advised to new borns?

76. What are the immunisation programmes available at the nearest health centre in your locality? Which of these diseases are the major health problems in your area?

77. What are epidemic and endemic diseases?

78. Which organ is affected if a person is suffering from jaundice?

79. What do you mean by Phagocytosis?

80. Why is it not necessary to give Hepatitis A vaccine to children?

81. What are the basic principles involved in medical treatment for diseases?

82. Why it is advisable to breast feed the baby for first few several weeks? Why Colostrum is good for infants?

83. How do Skin, Hairs, Saliva form the first line of defense against diseases?

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