Here we are providing Class 9 Science Objective Chapter – 13 Why do we Fall ill because its very important for Class 9 students as we all know that every board exam question has MCQs so that students should practice these questions so that students can get good marks in board. Class 9 Science Objective Chapter – 13 Why do we Fall ill is an extremely important and its also a year in which students learn the fundamentals of concepts that help them lay a solid foundation for their higher education. Here we are providing in Class Class 9 Science Objective Chapter – 13 Why do we Fall ill 100+ questions so that students practice more and more. If you want class wise Notes Then Click Here
Class 9 Science Objective Chapter – 13 Why do we Fall ill
1. Which one of the following diseases is not caused by bacteria?
( A ) Typhoid
( B ) Anthrax
( C ) Tuberculosis
( D ) Malaria
Ans – ( D )
2. Suzan’s grandfather is suffering from tuberculosis. In which category will you put his disease?
( A ) Chronic and acute both
( B ) She cannot predict anything from this information.
( C ) Chronic
( D ) Acute
Ans – ( C )
3. Which one of the following diseases are spread by microbes
( A ) High blood pressure
( B ) Peptic ulcer
( C ) Sleeping sickness
( D ) Diabetes
Ans – ( C )
4.Which one of the following diseases is caused by protozoans?
( A ) Malaria
( B ) Influenza
( C ) AIDS
( D ) Cholera
Ans – ( A )
5. Viruses, which causes hepatitis are transmitted through
( A ) air
( B ) water
( C ) food
( D ) personal contact
Ans – ( B )
6. Antibiotic work against
( A ) Virus
( B ) elephantiasis
( C ) Bacteria
( D ) Dengue
Ans – ( C )
7. The process in which the active immune system employs many cells to the affected tissue, is called
( A ) infection
( B ) infestation
( C ) invasion
( D ) inflammation
Ans – ( D )
8.If you live in a overcrowded and poorly ventilated house, it is possible that you may suffer from which of the following diseases
( A ) Cancer
( B ) AIDS
( C ) Air borne diseases
( D ) Cholera
Ans – ( C )
9. Penicillin kills bacteria but not our cells because
( A ) Our cells are immune to penicillin
( B ) Penicillin blocks the formation of cell wall
( C ) Our cells do not form a cell wall
( D ) None of the above
Ans – ( C )
10. The name of bacterial disease is
( A ) Ringworm
( B ) Measles
( C ) Typhoid
( D ) Malaria
Ans – ( C )
11. What is the importance of childhood immunisation programmes?
( A ) These programmes give protection only when the child reaches adult stage.
( B ) These programmes give lifelong protection against several infectious diseases
( C ) These progremmes give temporary protection against diseases
( D ) These programmes improve the health of some children
Ans – ( B )
12. The disease which is transmitted by sexual contact is
( A ) Malaria
( B ) Syphilis
( C ) Elephantiasis
( D ) Kalaazar
Ans – ( B )
13.Which one of the following is not important for individual health?
( A ) Living in clean space
( B ) Good economic condition
( C ) Social equality and harmony
( D ) Living in a large and well furnished house
Ans – ( D )
14. T.B. (Tuberculosis) is caused by
( A ) Vibrio Cholerae
( B ) Mycobacterium tuberculosis
( C ) HIV virus
( D ) Salmonella typhi (bacteria)
Ans – ( B )
15. Acute diseases last for
( A ) Long period of time
( B ) Only few hours
( C ) Short period of time
( D ) Life long
Ans – ( C )
16.Choose the wrong statement.
( A ) High blood pressure is caused by excessive weight and lack of exercise.
( B ) Cancers can be caused by genetic abnormalities.
( C ) Peptic ulcers are caused by eating acidic food.
( D ) Acne in not caused by staphylococci.
Ans – ( C )
17. Which one of the following is not a bacterial disease?
( A ) Cholera
( B ) Tuberculosis
( C ) Anthrax
( D ) Influenza
Ans – ( D )
18. Antibiotics do not work against viral infections because
( A ) viruses live only inside host cells.
( B ) viruses do not have metabolic pathways of their own,
( C ) viruses are resistant to antibiotics.
( D ) the protein coat of viruses acts as a barrier to the antibiotics
Ans – ( B )
19.We should not allow mosquitoes to breed in our surroundings because they
( A ) multiply very fast and cause pollution
( B ) are vectors for many diseases
( C ) bite and cause skin diseases
( D ) are not important insects
Ans – ( B )
20. Which one of the following disease is not transmitted by mosquito?
( A ) Brain fever
( B ) Malaria
( C ) Typhoid
( D ) Dengue
Ans – ( C )
21. ‘Public cleanliness is important for individual health’. Which of the following is an example of this statement?
( A ) Brushing our teeth and taking bath everyday keeps our body clean
( B ) Collecting and cleaning of garbage cans on the street regularly helps to prevent the spread of diseases
( C ) Clean rooms in our houses are essential for healthy living
( D ) Cutting nails regularly prevents dirt accumulation and infection in the nails
Ans – ( B )
22.Viruses, which cause hepatitis, are transmitted through
( A ) air
( B ) water
( C ) food
( D ) personal contact
Ans – ( B )
23. Which one of the following disease is not caused by bacteria?
( A ) Typhoid
( B ) Anthrax
( C ) Tuberculosis
( D ) Malaria
Ans – ( D )
24. Which of the following is the literal meaning of disease?
( A ) Being happy
( B ) Being unaware
( C ) Being uncomfortable
( D ) Being uncomplicated
Ans – ( C )
25.Vectors can be defined as
( A ) animals carry the infecting agents from sick person to another healthy person
( B ) microorganisms which cause many diseases
( C ) infected person
( D ) diseased plants
Ans – ( A )
26. Which one of the following is not a viral disease?
( A ) Dengue
( B ) AIDS
( C ) Typhoid
( D ) Influenza
Ans – ( C )
27. Rejection of transplanted organ is prevented by regular use of
( A ) Cyclosporin
( B ) Calcitonin
( C ) Thrombin
( D ) Pyroxin
Ans – ( A )
28. Which of the following could be a cause for developing a disease?
( A ) Exercising properly
( B ) Having a balanced diet
( C ) Poor personal hygiene
( D ) Getting enough sleep
Ans – ( C )
29. Which one of the following causes Kala-azar?
( A ) Ascaris
( B ) Trypanosoma
( C ) Leishmania
( D ) Bacteria
Ans – ( C )
30. Identify the group among the following, which contains all bacterial diseases
( A ) Typhoid, tuberculosis, anthrax
( B ) Malaria, anthrax, typhoid
( C ) Kala-azar, influenza, tuberculosis
( D ) Tuberculosis, anthrax, dengue
Ans – ( A )
31. Which is not a contributory cause of a person acquiring a water borne disease?
( A ) Lack of sufficient food
( B ) Attack by bacteria
( C ) Genetic susceptibility to the disease
( D ) Lack of clean drinking water
Ans – ( C )
32. AIDS cannot be transmitted by
( A ) sexual contact
( B ) hugs
( C ) breastfeeding
( D ) blood transfusion
Ans – ( B )
33. The diseases where microbes are the immediate causes, are called
( A ) infectious diseases
( B ) non-infectious diseases
( C ) chronic diseases
( D ) acute diseases
Ans – ( A )
34. Mosquitoes are often seen breeding on the stagnant water. We should not allow mosquitoes to breed in our surroundings because they
( A ) multiply very fast and cause pollution
( B ) are vectors for many diseases
( C ) bite and cause skin diseases
( D ) are not important insects
Ans – ( B )
35. Which one of the following has a long term effect on the health of an individual?
( A ) Common cold
( B ) Chicken pox
( C ) Chewing tobacco
( D ) Stress
Ans – ( C )
36. The vector for Yellow fever is
( A ) Mosquito
( B ) Flea
( C ) Housefly
( D ) Rat
Ans – ( A )
37. Which of the following can make you ill if you come in contact with an infected person?
( A ) High blood pressure
( B ) Genetic abnormalities
( C ) Sneezing
( D ) Blood cancer
Ans – ( C )
38. Antibiotics used in treatment of bacterial and fungal diseases are
( A ) the names of useful bacteria
( B ) toxins produced by bacteria
( C ) drugs manufactured to kill viruses
( D ) products of metabolism in some bacteria
Ans – ( D )
39. Making anti-viral drugs is more difficult than making anti-bacterial medicines because
( A ) viruses make use of host machinery
( B ) viruses are on the border line of living and non-living
( C ) viruses have very few biochemical mechanisms of their own
( D ) viruses have a protein coat
Ans – ( C )
40. The organisms which carry the infectious agents from a sick person to another potential host are known as
( A ) Fomites
( B ) Causative agents
( C ) Vectors
( D ) Vehicles
Ans – ( C )
41. You are aware of Polio Eradication Programme in your city. Children are vaccinated because
( A ) Vaccination kills the polio causing microorganisms
( B ) Prevents the entry of polio causing organisms in the body
( C ) It creates immunity in the body
( D ) All of above
Ans – ( C )
42. ……………….. is the basic units of organism
( A ) Bactria
( B ) Cell
( C ) Tissue
( D ) proteins
Ans – ( B )
43. Many of the people suffer from the problem of acnes and feel annoyed of the ugly skin texture caused due to the acne spots. Can you guess the microorganism causing these acne?
( A ) H1N1 virus
( B ) Trypanosoma
( C ) Leishmania
( D ) Staphylococcus
Ans – ( D )
44. function of heart
( A ) contraction and relaxation
( B ) purification of blood
( C ) purification of body
( D ) none of them
Ans – ( B )
45. Antibiotics are ineffective against the viral infections. For each type of the viral infection, human body produces its own antiviral protein that is released from the infected and dying host cells. What is this protein called?
( A ) Interferon
( B ) Leishmania
( C ) Ascaris
( D ) Pertussis
Ans – ( A )
46. Function of kidney…………….
( A ) Breathing
( B ) Beating
( C ) Filtering of urine
( D ) Filtering of blood
Ans – ( C )
47. Which of the following bacteria cause peptic ulcer?
( A ) Helicobactor chlolecystus
( B ) Helicobactor salomonis
( C ) Helicobactor pylori
( D ) Helicobactor hepaticus
Ans – ( C )
48. Cancer is a disease caused due to the uncontrolled growth of tissues in any part of body. This disease comes under which of the following types?
( A ) Congenital disease
( B ) Infectious disease
( C ) Non-infectious disease
( D ) None of these
Ans – ( C )
49. Name of cells which carry message and passes to brain
( A ) Ovum
( B ) Sperm
( C ) Liver cell
( D ) Nerve cell
Ans – ( D )
50. Cancer is a disease caused due to the uncontrolled growth of tissues in any part of body. This disease comes under which of the following types?
( A ) Congenital disease
( B ) Infectious disease
( C ) Non-infectious disease
( D ) None of these
Ans – ( C )
51. Tuberculosis is a disease which spreads from one person to another directly or indirectly is diagnosed with the help of a protein extracted from a bacterium called Mycobacterium tuberculosis which also causes the disease. What is the name of this protein?
( A ) Tuberlysis
( B ) Rifampicin
( C ) Cephalosporin
( D ) Tuberculin
Ans – ( D )
52. If the kidneys are not filtering urine then…………..
( A ) Blood get contaminated
( B ) Dysentery
( C ) Omitting
( D ) Poisonous substance accumulated
Ans – ( D )
53. Which disease is not transmitted by mosquitoes?
( A ) Dengue
( B ) Malaria
( C ) Brain fever or encephalitis
( D ) Pneumonia
Ans – ( D )
54. Stomach is the vital organ of…………….. system
( A ) Circulatory
( B ) Blood
( C ) Transport
( D ) Digestive
Ans – ( D )
55.Cholera is an infectious, fatal disease caused by the bacterium which lives and multiplies in the small intestine. The disease sometimes occurs in epidemic form. Which of the following is not a reason for the spread of the disease?
( A ) Breeding of the flies on the garbage heaps
( B ) Use of spices in food
( C ) Drinking the contaminated water
( D ) Consuming the contaminated food
Ans – ( B )
56. Corona is the ………………..
( A ) Infectious disease
( B ) Non infectious disease
( C ) A and b both
( D ) None of them
Ans – ( A )
57. TAB-vaccine is used to provide immunity against Typhoid for a period of three years.What is the correct abbreviation of TAB?
( A ) Typhoid-Paratyphoid A and B Vaccine
( B ) Typhoid-Partialtyphoid A and B Vaccine
( C ) Typhoid-Peroxytyphoid A and B Vaccine
( D ) Typhoid-Pertyphoid A and B Vaccine
Ans – ( A )
