Biology · Science General

Disease Causative Agents

2,258 Questions

Disease causative agents questions test your understanding of viral, bacterial, and fungal infections, along with their transmission methods. These are common topics in general science sections of SSC and railways exams. Practice these questions to accurately identify disease pathogens and symptoms.

Viral diseasesFoodborne illnessesDisease transmission methodsExtrinsic disease factorsCommon pathogens

Disease Causative Agents Questions

Multiple choice

Which of the following diseases do not spread through air?

  1. Common cold

  2. AIDS

  3. Pneumonia

  4. Tuberculosis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

AIDS is transmitted through direct contact with infected bodily fluids, such as blood or sexual contact, not through the air. Common cold, pneumonia, and tuberculosis are all respiratory infections that spread via airborne droplets.

Multiple choice

Which of the following diseases is a chronic disease?

  1. Small pox

  2. Fever

  3. Cough

  4. Elephantiasis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chronic diseases are long-term conditions that persist for a long time, often for years or a lifetime. Elephantiasis is a chronic condition, whereas fever and cough are typically acute symptoms of short-term illnesses.

Multiple choice

What is the immediate cause of an infectious disease?

  1. Microbes

  2. Plants

  3. Animals

  4. Non living organisms
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Infectious diseases are caused by pathogens, which are biological agents like bacteria, viruses, fungi, or parasites. These are collectively referred to as microbes.

Multiple choice

Which of the following is a non-infectious disease?

  1. Cholera

  2. Typhoid

  3. Hemophilia

  4. Malaria
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hemophilia is a genetic disorder, meaning it is inherited and not caused by an infectious pathogen. Cholera, typhoid, and malaria are all infectious diseases caused by bacteria or parasites.

Multiple choice

All of the following are chronic diseases except

  1. elephantiasis

  2. ascariasis

  3. tuberculosis

  4. influenza
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Influenza is an acute viral infection that typically resolves within a week or two. Elephantiasis, ascariasis, and tuberculosis are chronic or long-term infections.

Multiple choice

All of the following are air borne diseases except

  1. common cold

  2. pneumonia

  3. tuberculosis

  4. malaria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Malaria is a vector-borne disease transmitted by the bite of an infected female Anopheles mosquito, not through the air. Common cold, pneumonia, and tuberculosis are all airborne.

Multiple choice

Which of the following diseases is caused by virus?

  1. Influenza

  2. Typhoid

  3. Cholera

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Influenza is caused by the influenza virus. Typhoid and cholera are bacterial infections caused by Salmonella typhi and Vibrio cholerae, respectively.

Multiple choice

Congenital diseases are those which

  1. occur during life time

  2. occur at the time of birth

  3. are infectious and spread from man to man

  4. are deiciency diseases
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ans - 2

Multiple choice

Cholera is a/an

  1. Air-borne disease

  2. Water-borne disease

  3. Genetic disorder

  4. Sexually-transmitted disease
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ans - 2