Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
3.0k views
in Physics by (10.7k points)
closed by

Class 9 Science MCQ Questions of Why Do We Fall Ill with Answers?

2 Answers

+2 votes
by (14.5k points)
selected by
 
Best answer

Solving the MCQ Questions of Why Do We Fall Ill. MCQ Questions can be of extreme help as you will be aware of all the concepts. These MCQ Questions pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. 

Students can solve these MCQ Questions for Class 9 with Answers and assess their preparation level. Students are advised to practice the Class 9 Science MCQ Questions of Why Do We Fall Ill available here. MCQ Questions for Class 9 Science with Answers are prepared as per the Latest Exam Pattern.

Students can clear up NCERT Class 9 MCQ Questions Science with answers to understand their preparation level.

Practice MCQ Questions for class 9 Chapter-Wise

1. Which one of the following is not a viral disease?

(a) Dengue
(b) AIDS
(c) Typhoid
(d) Influenza

2. Which one of the following causes kala-azar?

(a) Ascaris
(b) Trypanosoma
(c) Leishmania
(d) Bacteria

3. 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

4. Which disease is not transmitted by mosquitoes?

(a) Dengue
(b) Malaria
(c) Brain fever or encephalitis
(d) Pneumonia

5. Viruses, which cause hepatitis, are transmitted through

(a) air
(b) water
(c) food
(d) personal contact

6.  Sleeping sickness is caused by ..........., a protozoan.

(a) Trypanosoma
(b) Euglena
(c) Plasmodium
(d) Amoeba

7. 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

8. The vector for Yellow fever is:

(a) Mosquito
(b) Flea
(c) Housefly
(d) Rat

9. Which of the following bacteria cause peptic ulcer?

(a) Helicobactor chlolecystus
(b) Helicobactor salomonis
(c) Helicobactor pylori
(d) Helicobactor hepaticus

10. Jaundice is a disease of 

(a) kidney
(b) liver
(c) pancreas
(d) duodenum

11. 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

12.  A condition of failure of function of kidney to form urine is

(a) Creatinine
(b) Hematuria
(c) Alkaptoneuria​
(d) Anuria

13. 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

14. 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

15. 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

16. Infectious diseases are the diseases that can spread from infected person to the healthy person. Which of the following can make you ill if you come in contact with an infected person?

(a) Genetic abnormality
(b) Blood cancer
(c) High blood pressure
(d) Sneezing and coughing

17. Which one of the following deficiency disease?

(a) Diabetes
(b) Malaria
(c) Goitre
(d) Tetanus

18. Identify a protozoan disease –

(a) Ringworm
(b) Measles
(c) Diphtheria
(d) Amoebiasis

19. BCG’ vaccine is given to infants for protection against –

(a) Diarrhoea
(b) Cholera
(c) Pneumonia
(d) Tuberculosis

20. Which one is not a sexually transmitted disease?

(a) AIDS
(b) Gonorrhoea
(c) Syphilis
(d) Diabetes.

+1 vote
by (14.5k points)
edited by

Answer: 

1. Answer : (c) Typhoid

Explanation: Typhoid is a bacterial infection that can lead to a high fever, diarrhea, and vomiting. It can be fatal. It is caused by the bacteria Salmonella typhi. The infection is often passed on through contaminated food and drinking water, and it is more prevalent in places where handwashing is less frequent.

2. Answer : (c) Leishmania

Explanation: Kala azar is caused by bites from female phlebotomine sandflies—the vector (or transmitter) of the leishmania parasite. The sand flies feed on animals and humans for blood, which they need for developing their eggs.

3. Answer :(a) animals carry the infecting agents from sick person to another healthy person

Explanation:  A vector is an organism that does not cause disease itself but which spreads infection by conveying pathogens from one host to another. A "vector" in this sense is a vehicle for delivering genetic material such as DNA to a cell. 

4. Answer :  (d) Pneumonia

Explanation: Pneumonia is a disease that is not transmitted by the mosquitoes. Pneumonia refers to various pulmonary infections that are caused by viruses, fungi, and bacteria. The bacteria Diplococcus pneumoniae is the predominant causative agent of pneumonia.

5. Answer : (b) water

 Explanation: The hepatitis A virus is transmitted primarily by the faecal-oral route; that is when an uninfected person ingests food or water that has been contaminated with the faeces of an infected person. In families, this may happen through dirty hands when an infected person prepares food for family members.

6 . Answer : (a) Trypanosoma

Explanation:  African Trypanosomiasis, also known as “sleeping sickness”, is caused by microscopic parasites of the species Trypanosoma brucei. It is transmitted by the tsetse fly (Glossina species), which is found only in sub-Saharan Africa.

7. Answer : (c) Chronic

Explanation:  The most common types of chronic disease are cancer, heart disease, stroke, diabetes, and arthritis.

8. Answer : (a) Mosquito

Explanation: Yellow fever virus (YFV), an arthropod-borne virus in the genus Flavivirus of the family Flaviviridae, is the etiologic agent of yellow fever.

9. Answer : (c) Helicobactor pylori

Explanation: The most common causes of peptic ulcers are infection with the bacterium Helicobacter pylori (H. pylori) and long-term use of nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen (Advil, Motrin IB, others) and naproxen sodium (Aleve).

10. Answer : (b) liver

Explanation: Hepatocellular jaundice occurs as a result of liver disease or injury. Hemolytic jaundice occurs as a result of hemolysis, or an accelerated breakdown of red blood cells, leading to an increase in the production of bilirubin. Obstructive jaundice occurs as a result of an obstruction in the bile duct.

11. Answer : (c) Chewing tobacco

Explanation: It is a chronic disease that causes long term effects on an individual. Stress can be caused by many sudden changes and situations in our life. It is easy to handle and does not cause long-term effects on humans. 

12. Answer : (d) Anuria

Explanation: A condition of failure of the kidney to form urine is called Anuria or enuresis.

13. Answer : (c) It creates immunity in the body

Explanation: It is particularly critical that sick children and newborn babies are immunized because their immunity levels are lower than those of other children. All sick children and newborns should be immunized during the polio campaigns to give them the protection against polio that they desperately need.

14.  Answer : (b) Use of spices in food

Explanation: A bacterium called Vibrio cholerae causes cholera infection. The deadly effects of the disease are the result of a toxin the bacteria produces in the small intestine. The toxin causes the body to secrete enormous amounts of water, leading to diarrhea and a rapid loss of fluids and salts (electrolytes).

15. Answer : (a) Typhoid-Paratyphoid A and B Vaccine

Explanation: The vaccine TAB is used for the prevention of Typhoid. This vaccine helps in preventing typhoid, paratyphoid A and the paratyphoid B.

16. Answer : (d) Sneezing and coughing

Explanation: Infectious diseases are transmitted from person to person by direct or indirect contact. Certain types of viruses, bacteria, parasites, and fungi can all cause infectious diseases. Malaria, measles, and respiratory illnesses are examples of infectious diseases.

17. Answer : (c) Goitre

Explanation: The most common cause of goiters worldwide is a lack of iodine in the diet.

18. Answer :(d) Amoebiasis

Explanation: Amoebiasis, a type of gastro, is a cause of diarrhoea among travellers to developing countries. It is caused by a parasite known as Entamoeba histolytica that infects the bowel. Amoebiasis most commonly affects young to middle-aged adults. Proper handwashing helps prevent the spread of amoebiasis.

19. Answer : (d) Tuberculosis

Explanation: Bacille Calmette-Guérin (BCG) is a vaccine for tuberculosis (TB) disease. This vaccine is not widely used in the United States, but it is often given to infants and small children in other countries where TB is common. BCG does not always protect people from getting TB.

20. Answer : (d) Diabetes

Explanation: Sexually transmitted diseases (STDs), or sexually transmitted infections (STIs), are infections that are passed from one person to another through sexual contact. The contact is usually vaginal, oral, and anal sex. But sometimes they can spread through other intimate physical contact.

Click here to more practice  MCQ Question of Why do we fall ill class 9

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...