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Diseases and Microbes – GK Quiz with Answers – Level 2

Medium-level GK questions on microbes and disease: malaria, typhoid and Japanese encephalitis, how vaccines and penicillin work, Pasteur, Jenner, Fleming and Koch, and food preservation methods.

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Choose Normal practice or a Simulated test.

Questions, answer key and solutions.

Questions
50
Duration
30 min
Marks
50

Negative marking

Attempts
100
Access
Free
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Normal practice, or a Simulated test

Both use the same questions. Normal practice is untimed and needs no account: choose an option and the answer and solution appear at once. The Simulated test is the real computer-based format, with one 30-minute clock, a question palette and full screen, and your score, the key and the solutions arrive when you submit.

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How the two modes differ
No account needed

Normal

Untimed

Every question on one page, loading as you scroll. Choose an option and see straight away whether it was right.

  • No timer. Nothing to start and nothing to submit. Stop whenever you like.
  • Answered as you choose. Tap an option and it is marked at once, with the correct answer shown.
  • Solutions in place. The explanation, and the video where one has been added, sit under the question.
  • Open to guests. Normal practice needs no sign-in.
Real exam conditions

Simulated

Timed CBT

The computer-based test format: one clock, a question palette, and a score the moment you submit.

  • A clock that does not pause. 30 minutes from the moment you begin, and the paper is submitted for you when it reaches zero.
  • Question palette. Answered, not answered and marked for review, section by section, as the real interface has it.
  • Full screen, proctored. The test takes over the screen; leaving it three times submits the paper.
  • Answers hidden until you submit. The key, the explanations and your score all arrive together at the end.

About this test

Diseases and Microbes Level 2 GK Practice Quiz: Causes, Spread and Prevention

Level 2 of the Diseases and Microbes GK series moves beyond recall into statement, matching, odd-one-out and sequencing questions on infection and microbes. It tests causal microbes, how diseases spread, how vaccines and penicillin work, and the science behind food preservation. Each question on Aptitude360 comes with an explanation.

Topics tested in the Level 2 microbes quiz

  • Causal agents: Plasmodium in malaria, bacteria behind typhoid and anthrax, and viral diseases such as polio and chicken pox
  • Modes of spread: contaminated water, airborne droplets from sneezing, mosquito bites in Japanese encephalitis and wind-borne spread of wheat rust
  • Vaccines and immunity: antibody production, smallpox eradication and childhood immunisation
  • Antibiotics: penicillin blocking bacterial cell-wall formation
  • Scientists: contributions of Pasteur, Jenner, Fleming and Koch
  • Food preservation: pasteurisation, salt, sugar in jams, and oil and vinegar in pickles

Concepts to revise on infection and prevention

  • Infectious diseases spread through microbes; non-infectious ones, such as asthma and some cancers, do not
  • The female Anopheles mosquito can transmit the Plasmodium parasite that causes malaria; the mosquito itself is not the cause
  • Yeast is a fungus, not a bacterium, and its carbon dioxide makes dough rise
  • Symptoms of an infectious disease depend mainly on the organ or tissue the microbe targets

Preparation tips for statement-based microbe questions

  • Read each statement for swapped details, such as a carrier named as the cause or a bacterium called a virus
  • Practise the order of steps in vaccine action and airborne spread as cause and effect chains
  • Revise each scientist with one key contribution to avoid mix-ups in matching lists

Who this Level 2 set suits

This set suits GK aspirants who know the basics of microbes and want medium-level Biology practice in exam-style formats.

FAQs about Diseases and Microbes – GK Quiz with Answers – Level 2

How does a vaccine work?
Some vaccines introduce dead or weakened microbes, while others use microbial parts or genetic instructions. In each case the body makes antibodies and remembers the microbe, so it can fight the real infection later.
What is the difference between infectious and non-infectious diseases?
Infectious diseases, such as cholera and typhoid, are caused by microbes and can spread from person to person. Non-infectious diseases, such as asthma and many cancers, do not spread through contact.
How does malaria spread?
Malaria is caused by the protozoan Plasmodium. It spreads when an infected female Anopheles mosquito, which can transmit the parasite, bites a person.
What is pasteurisation of milk?
Pasteurisation is heating milk and then cooling it suddenly. It kills or stops the growth of most harmful microbes, so the milk keeps longer.

Test structure

How the paper is split, and how long each part runs. A section you have finished cannot be returned to.

SectionQuestionsTime
Diseases and Microbes GK Level 25030 min

Marking & rules

Total marks
50 across 50 questions.
Negative marking
A wrong answer costs marks. Leaving a question unanswered costs nothing.
Attempts
100 in total. An attempt is spent the moment you begin one.

What you get when you submit

The analysis is ready the moment you submit the paper.

Score and accuracy

Marks, percentage, right, wrong and skipped, and the time you took.

Section by section

The same figures for each section, so a weak one cannot hide in an average.

The full answer key

Every question with your answer, the right one, the working, and the video where there is one.

Where you stand

Your score against the spread of everyone else who has sat this test.

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