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NSC Physical Sciences AI Practice

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

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Question 291

What type of organic compound is characterized by the presence of a hydroxyl group (-OH)?
Organic chemistryOrganic chemistry - Functional groupsmedium

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Question 292

A 10 Ω resistor and a 20 Ω resistor are connected in parallel. What is the total resistance?
Electricity and magnetismElectricity - Resistance in circuitsmedium

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Question 293

Which wave property is unchanged when light reflects off a mirror?
Waves and opticsWaves - Reflection and wave propertieshard

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Question 294

What is the main reason metals are malleable?
Matter and materialsMatter - Properties of metalshard

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Question 295

In an exothermic chemical reaction, which of the following is true?
Chemical changeChemical change - Energy changes in reactionseasy

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Question 296

A light ray passes from air into water at an angle of incidence of 30°. Given the refractive index of water is 1.33, what is the angle of refraction inside the water? (Use n_air = 1)
Waves and opticsS3.2 Refraction and Snell's Lawmedium

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Question 297

Which of these statements correctly describes an endothermic chemical change?
Chemical changeS4.1 Energy Changes in Reactionsmedium

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Question 298

Which of the following correctly describes the motion of an object under uniform acceleration starting from rest?
MechanicsMechanics - Kinematicseasy

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Question 299

In an electric circuit, the resistance is doubled while the voltage remains constant. What happens to the current flowing through the circuit?
Electricity and magnetismElectricity - Ohm's lawmedium

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Question 300

Which statement correctly explains why the diffraction pattern produced by a single slit becomes narrower when the slit width is increased?
Waves and opticsWaves and optics - Diffractionhard

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