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NSC Physical Sciences AI Practice

Train with AI-generated exam-style questions. Get instant explanations and coaching on every weak area.

Note: Diagram-based questions are coming soon. WAEC Biology Paper includes ~5 diagram questions.

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Question 71

When light passes from air into water, what happens to its speed?
Waves and opticsRefraction of lightmedium

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Question 72

Which of the following is a chemical change?
Chemical changeChemical reactionsmedium

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Question 73

What type of organic compound is represented by the general formula CnH2n+2?
Organic chemistryHydrocarbonsmedium

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Question 74

A wave has a frequency of 50 Hz and a wavelength of 2 m. What is its speed?
Waves and opticsWave speed calculationmedium

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Question 75

What is the magnetic effect of an electric current?
Electricity and magnetismMagnetism and electromagnetismeasy

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Question 76

Which of the following best describes the principle of conservation of momentum?
MechanicsMomentum and collisionshard

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Question 77

Which property of metals allows them to be drawn into wires?
Matter and materialsProperties of metalsmedium

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Question 78

What is the acceleration of an object in free fall near the Earth's surface (neglecting air resistance)?
MechanicsMechanics - Kinematics and dynamicseasy

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Question 79

Which component in an electric circuit restricts the flow of current?
Electricity and magnetismElectric circuits and componentseasy

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Question 80

What type of chemical reaction is represented by 2H₂ + O₂ → 2H₂O?
Chemical changeTypes of chemical reactionsmedium

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