Ordinary level 2026 South West mock Engineering science 1

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1. The S.I. unit for viscous drag is:

   A. Metre

   B. newton

   C. kilogram

   D. newton meter

2. An example of non-contact forces is:

   A. Upthrust

   B. Tension

   C. Friction

   D. Weight

3. The potential energy of an object raised to a height above the earth’s surface is directly proportional to:

   A. Its mass only

   B. Its height only

   C. Its mass and height

   D. Its mass and velocity

4. Two vehicles P and Q, moving with uniform velocity, collide head-on with each other. The physical quantity that remains the same is:

   A. Force

   B. Momentum

   C. Speed

   D. Velocity

5. Figure 1 shows opposite forces acting on a lorry in motion. The lorry can be described as:

   (Diagram showing a lorry with “Engine Thrust = 2800 N” to the left and “Friction = 1800 N” to the right. Labelled Figure 1)

   A. Moving with constant velocity

   B. Accelerating uniformly

   C. Decelerating uniformly

   D. Acceleration non-uniformly

6. Due to liquid incompressibility, pressure applied to a liquid enclosed in a container is transmitted equally to all parts of the liquid. This statement refers to:

   A. The law of floatation

   B. Lenz’s law

   C. Pascal’s law

   D. Archimedes’ law

7. Power is defined as:

   A. Rate of change of momentum

   B. Rate of doing work

   C. Product of force and displacement

   D. Ability to do work

8. Which of the following fuse values is most suitable for use on an electric appliance rated 240 W, 70 V?

   A. 5 A

   B. 4 A

   C. 3.5 A

   D. 2.5 A

9. The polarity of an electromagnet can be changed by:

   A. Increasing the voltage

   B. Decreasing the number of turns

   C. Reversing the direction of current

   D. Cooling the coil

10. Which of the following elements is a metal?

    A. Oxygen

    B. Iodine

    C. Mercury

    D. Carbon

11. A process that takes place at constant pressure is described as:

    A. An isothermal process

    B. An isochoric process

    C. An isobaric process

    D. An adiabatic process

12. Which of the graphs in figure 2 best represents uniformly accelerated motion for a car on a level road?

    (Diagram showing four graphs labelled A, B, C, and D, with axes starting at 0. Labelled Figure 2)

13. On which of the following components are elements classified into groups?

    A. Number of protons

    B. Number of neutrons

    C. Number of shells

    D. Number of valence electrons

14. Oils are preferred to water for use as hydraulic liquids in machines because they are:

    A. less viscous than water

    B. more viscous than water

    C. Translucent and less volatile

    D. Good at preventing rusting of machine parts

15. The upper fixed point of a mercury thermometer is the temperature of:

    A. Boiling water at standard atmospheric pressure

    B. Steam from pure boiling mercury at one standard atmospheric pressure

    C. Steam from pure boiling water at one standard atmospheric pressure

    D. Pure boiling mercury

16. A bag of cement is 50 kg on Earth and weighs approximately 500 N. If taken to the moon, its

    A. mass and weight will remain the same

    B. mass and weight will increase

    C. mass and weight will decrease

    D. Mass will remain the same, weight will decrease

17. The minority charge carriers in an n-type semiconductor are:

    A. Electron

    B. Protons

    C. Holes

    D. Neutrons

18. Which of the following particles is primarily responsible for electric current flow in metals?

    A. Protons

    B. Neutrons

    C. Electrons