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Physical Sciences Past Paper Question 1 Drill Level 2: Routine Procedures
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Matric Physical Sciences Paper 1: High-Yield MCQ Drill

10 NSC-style practice multiple-choice questions written for this platform (not taken from a specific exam paper). You have 15 minutes. Memo explanations unlock on completion.

Question 1 of 10 2 Marks

Which ONE of the following physical quantities is a measure of the inertia of a body?

Official Marking Guideline Rationale:
Correct Answer: B. Correct! By definition, mass is a quantitative measure of an object’s inertia.
Marking Criteria:
• Correct selection of Option B → B or Mass (2 marks)
Question 2 of 10 2 Marks

Which ONE of the following physical quantities is a measure of the inertia of a body?

Official Marking Guideline Rationale:
Correct Answer: B. Correct! By definition, mass is a quantitative measure of an object’s inertia.
Marking Criteria:
• Correct selection of Option B → B or Mass (2 marks)
Question 3 of 10 2 Marks

A ball is projected vertically upwards from the ground. Which ONE of the following is correct when the ball reaches its maximum height?

Official Marking Guideline Rationale:
Correct Answer: B. Correct! At top of flight \( v = 0 \), while gravity constantly accelerates the ball downwards.
Marking Criteria:
• Correct selection of Option B → B or Velocity is zero and acceleration is 9.8 m/s^2 downwards (2 marks)
Question 4 of 10 2 Marks

A ball is projected vertically upwards from the ground. Which ONE of the following is correct when the ball reaches its maximum height?

Official Marking Guideline Rationale:
Correct Answer: B. Correct! At top of flight \( v = 0 \), while gravity constantly accelerates the ball downwards.
Marking Criteria:
• Correct selection of Option B → B or Velocity is zero and acceleration is 9.8 m/s^2 downwards (2 marks)
Question 5 of 10 2 Marks

A police car with its siren emitting a sound of constant frequency approaches a stationary listener at constant speed. Which ONE of the following statements concerning the observed frequency and wavelength is TRUE?

Official Marking Guideline Rationale:
Correct Answer: A. Correct! The wave crests are compressed, reducing wavelength and increasing pitch/frequency.
Marking Criteria:
• Correct selection of Option A → A or Higher frequency, shorter wavelength (2 marks)
Question 6 of 10 2 Marks

A police car with its siren emitting a sound of constant frequency approaches a stationary listener at constant speed. Which ONE of the following statements concerning the observed frequency and wavelength is TRUE?

Official Marking Guideline Rationale:
Correct Answer: A. Correct! The wave crests are compressed, reducing wavelength and increasing pitch/frequency.
Marking Criteria:
• Correct selection of Option A → A or Higher frequency, shorter wavelength (2 marks)
Question 7 of 10 2 Marks

The net work done on an object is equal to the change in the object’s ...

Official Marking Guideline Rationale:
Correct Answer: B. Correct! The Work-Energy Theorem states that the net work done on an object is equal to the change in its kinetic energy.
Marking Criteria:
• Correct Answer Selection → B or kinetic energy (2 marks)
Question 8 of 10 2 Marks

Which ONE of the following represents the correct unit for the electric field strength \( E \)?

Official Marking Guideline Rationale:
Correct Answer: A. Correct! Electric field is force per unit positive test charge: Newtons per Coulomb (\( \text{N}\cdot\text{C}^{-1} \)).
Marking Criteria:
• Correct Answer Selection → A or N·C⁻¹ (2 marks)
Question 9 of 10 2 Marks

Which ONE of the following homologous series contains a carbonyl group bonded to TWO carbon atoms?

Official Marking Guideline Rationale:
Correct Answer: B. Correct! Ketones have the carbonyl group (\( -\text{C}=\text{O} \)) located inside the chain, bonded to two alkyl groups.
Marking Criteria:
• Correct Answer Selection → B or Ketones (2 marks)
Question 10 of 10 2 Marks

Consider the equilibrium reaction: \( 2\text{SO}_2(g) + \text{O}_2(g) \rightleftharpoons 2\text{SO}_3(g) \quad (\Delta H < 0) \).
Which ONE of the following changes will increase the yield of \( \text{SO}_3(g) \)?

Official Marking Guideline Rationale:
Correct Answer: C. Correct! Increasing pressure shifts the system towards the side with fewer gas moles (2 moles on right vs 3 moles on left), increasing SO3 yield.
Marking Criteria:
• Correct Answer Selection → C or Increasing the pressure (2 marks)
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