Science MCQs

Practice multiple choice questions with instant feedback. Select an option to see if you're correct.

Total Questions
2100
Page 19 of 210
Question 181 Easy

Fever is a symptom of:

A
Low blood pressure
B
Infection
C
Dehydration
D
Vitamin deficiency
Question 182 Easy

Which pathogen causes dengue?

A
Bacteria
B
Virus
C
Fungus
D
Parasite
Question 183 Easy

The first vaccine was developed for:

A
Polio
B
Smallpox
C
Measles
D
Tuberculosis
Question 184 Medium

Which of these is NOT a mode of disease transmission?

A
Airborne
B
Waterborne
C
Genetic
D
Vector-borne
Question 185 Medium

HIV primarily attacks:

A
Red blood cells
B
Platelets
C
T-lymphocytes
D
Neurons
Question 186 Easy

Which of these is a fungal infection?

A
Tuberculosis
B
Ringworm
C
Hepatitis
D
Cholera
Question 187 Medium

The 'memory' of adaptive immunity is due to:

A
Antibiotics
B
Memory cells
C
Vaccines
D
Antipyretics
Question 188 Easy

Which organ is part of both the immune and lymphatic systems?

A
Liver
B
Pancreas
C
Spleen
D
Kidneys
Question 189 Easy

An allergen triggers:

A
Immunity
B
Allergic reaction
C
Vaccination
D
Antibody production
Question 190 Easy

40. Which disease is eradicated globally due to vaccination?

A
Polio
B
Smallpox
C
Measles
D
Tetanus
Showing 181-190 of 2100 questions

Quick Stats

Total Questions 10900
easy 5797
medium 2983
hard 2120

Practice Tips

Time Management

Practice with time limits for better preparation

Review Mistakes

Always check explanations for wrong answers

Track Progress

Monitor your improvement across subjects

Did You Know?

Practice Makes Perfect

Regular practice with MCQs can improve your test-taking speed and accuracy by up to 40%.

Active Recall

MCQs engage active recall, which is 50% more effective for long-term memory than passive reading.