Class 9th Science Chapter – 13 Why Do we Fall ill MCQ with answer

(2) The AIDS virus cannot be transmitted by?

A. Sexual contact
B. Blood transfusion
C. Breast feeding
D. Hugs and hand shake

Answer – (D) Hugs and hand shake

(3) The disease which is transmitted by sexual contact is _____?

A. Malaria
B. Syphilis
C. Kala-azar
D. Elephantiasis

Answer – (B) Syphilis

(i) Tuberculosis
(ii) Cancer
(iii) Common cold
(iv) Viral fever

A. (i) and (ii)
B. (ii) and (iii)
C. (iii) and (iv)
D. (i) and (iv)

Answer – (C) (iii) and (iv)

A. Diphtheria
B. Cancer
C. Tetanus
D. Whooping cough

Answer – (B) Cancer

(6) The protozoa that causes kala-azar is _________?

A. Leishmania
B. Ascaris
C. Trypanosoma
D. Plasmodium

Answer – (A) Leishmania

(7) The method of immunisation was first tried by ________?

A. Edward Jenner
B. Robert Hooke
C. Louis Hook
D. Louis Pasteur

Answer – (D) Louis Pasteur

(8) The disease that an infected mother can transmit to her baby through breast feeding is?

A. AIDS
B. Malaria
C. Kala-azar
D. Elephantiasis

Answer – (A) AIDS

(9) Antibiotics work against ______?

A. Elephantiasis
B. Virus
C. Bacteria
D. Parasites

Answer – (C) Bacteria

(10) Which among the following diseases is not infectious?

A. Cancer
B. Typhoid
C. Malaria
D. Cholera

Answer – (A) Cancer

(11) Identify the disease which is caused by bacteria?

A. Influenza
B. Common cold
C. Anthrax
D. AIDS

Answer – (C) Anthrax

(12) Diseases where microbes are the immediate cause are called ____________ Disease?

A. Non-infectious
B. Acute
C. Chronic
D. Infectious

Answer – (D) Infectious

(13) Headache is an example of ______disease?

A. Air-borne
B. Acute
C. Infectious
D. Chronic

Answer – (B) Acute

(14) Diseases caused by fungi?

A. Skin infection
B. Cold and cough
C. AIDS
D. Malaria

Answer – (A) Skin infection

(15) Which of the following diseases is caused by a protozoan?

A. Typhoid
B. Common Cold
C. AIDS
D. Malaria

Answer – (D) Malaria