Matric Physical Sciences

Question 1

What is the SI unit of force?

Accepted Answer

Newton

Answer

Joule

Answer

Watt

Answer

Pascal

Question 2

An object of mass 5 kg accelerates at 2 m·s⁻². What is the net force acting on it?

Accepted Answer

10 N

Answer

2.5 N

Answer

7 N

Answer

3 N

Question 3

Which of the following is the chemical formula for water?

Accepted Answer

H₂O

Answer

CO₂

Answer

H₂O₂

Answer

OH

Question 4

What type of bond forms between a metal and a non-metal through the transfer of electrons?

Accepted Answer

Ionic bond

Answer

Covalent bond

Answer

Metallic bond

Answer

Hydrogen bond

Question 5

Calculate the work done when a force of 20 N moves an object 4 m in the direction of the force.

Accepted Answer

80 J

Answer

5 J

Answer

24 J

Answer

16 J

Question 6

What is the acceleration due to gravity near the Earth's surface (used in Grade 12)?

Accepted Answer

9.8 m·s⁻²

Answer

10 m·s⁻¹

Answer

98 m·s⁻²

Answer

1.8 m·s⁻²

Question 7

In the reaction 2H₂ + O₂ → 2H₂O, what is the type of reaction?

Accepted Answer

Synthesis (combination)

Answer

Decomposition

Answer

Displacement

Answer

Neutralisation

Question 8

Which quantity is a vector?

Accepted Answer

Velocity

Answer

Speed

Answer

Distance

Answer

Mass