Science MCQs
Practice multiple choice questions with instant feedback. Select an option to see if you're correct.
In the rusting process, iron reacts with:
In Activity 5.5, the nail that did NOT rust was placed in:
In the equation: 2KClO₃(s) → 2KCl(s) + 3O₂(g), what does the (s) signify?
In the chemical reaction: Zn + 2HCl → ZnCl₂ + H₂, what is the product?
When water freezes into ice, what type of change occurs?
Which of the following is a physical change?
What is needed for combustion to occur?
Which of the following is a chemical property?
What is formed when iron reacts with moist air?
Which of the following is a chemical change?
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Regular practice with MCQs can improve your test-taking speed and accuracy by up to 40%.
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MCQs engage active recall, which is 50% more effective for long-term memory than passive reading.