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NSC Physical Sciences – South Africa

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Question 91

During the combustion of a hydrocarbon, which gas is always produced as a product?
Chemical changeChemical Change - Combustion Reactionshard

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Question 92

A car accelerates uniformly from rest to a speed of 20 m/s in 5 seconds. What is the acceleration of the car?
MechanicsMechanics - Kinematicseasy

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Question 93

A wave has a frequency of 50 Hz and a wavelength of 3 m. What is the speed of the wave?
Waves and opticsWaves - Wave propertieseasy

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Question 94

Which statement correctly describes metals in terms of their atomic structure?
Matter and materialsMatter - Atomic structure and bondingmedium

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Question 95

In a chemical reaction, if the temperature is increased, what generally happens to the rate of reaction?
Chemical changeChemical change - Factors affecting reaction ratesmedium

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Question 96

What is the magnetic field direction inside a long straight solenoid when current flows through it?
Electricity and magnetismMagnetism - Solenoids and magnetic fieldsmedium

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Question 97

A beam of white light passes through a prism and separates into different colours. What causes this phenomenon?
Waves and opticsOptics - Dispersion of lightmedium

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Question 98

Which type of bond involves the sharing of electron pairs between atoms?
Matter and materialsMatter - Types of chemical bondingeasy

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Question 99

In an organic reaction, benzene undergoes nitration. What is the main product formed?
Organic chemistryOrganic chemistry - Aromatic substitution reactionshard

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Question 100

What is the acceleration of an object with a mass of 5 kg if a force of 20 N is applied to it in the direction of motion?
MechanicsMechanics - Newton's Lawseasy

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