Science MCQs
Practice multiple choice questions with instant feedback. Select an option to see if you're correct.
What is the role of platelets in blood?
Which blood vessel has the thickest walls?
What happens to the pulse rate after exercise?
Which organ converts lactic acid back into glucose?
What is the main cause of asthma?
Which structure in the heart prevents backflow of blood?
What is the function of the pericardium?
Which of the following is a respiratory disease?
What is the primary energy currency of cells?
Which activity increases the risk of hypertension?
Quick Stats
Popular Subjects
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
Quick Actions
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.