cameroon gce intermediate level 2026 material technology and workshop processes 1

Mechanical Engineering & Material Science Practice Questions

Below are 10 multiple-choice questions covering topics such as machining operations, material properties, welding, and crystal structures.

📷 Note: You can reference the original exam layout in image_5fb6dc.jpg.

Question 1

The operation in Figure 1 is called:

(Refer to Figure 1 in image_5fb6dc.jpg – showing a tool rotating inside a hole while the work remains stationary)

• A. Drilling

• B. Reaming

• C. Boring

• D. Counter boring

Question 2

Identify the metal with the lowest melting point.

• A. Tin

• B. Copper

• C. Lead

• D. Mercury

Question 3

Plastics are made from the following EXCEPT:

• A. petroleum

• B. coal

• C. ores

• D. gases

Question 4

The Izod and the Charpy tests are performed for determining:

• A. stress and strain of a metal

• B. impact strength of material

• C. endurance strain

• D. resistance to failure

Question 5

Given: $\text{force} = 35.7\text{ kN}$, $\text{area} = 25\text{ mm}^2$, $\text{gauge length} = 28\text{ mm}$, and $\text{Extension} = 0.2\text{ mm}$. What is the value of the stress?

• A. 14.28

• B. 1.428

• C. 142.8

• D. 1428

Question 6

Identify the moulding process shown in Figure 2:

(Refer to Figure 2 in image_5fb6dc.jpg – showing plaster slurry being poured over a pattern)

• A. Bench moulding

• B. Pit moulding

• C. Floor moulding

• D. Plaster moulding

Question 7

The double-Vee butt weld is used for the welding plates of thickness over:

• A. $10\text{ mm}$

• B. $5\text{ mm}$

• C. $13\text{ mm}$

• D. $0.3\text{ mm}$

Question 8

Soluble oils are used during cutting and machining processes to:

• A. increase the cutting speed

• B. provide a smoother work

• C. remove heat

• D. provide good finishing surface

Question 9

One of the functions of coke in the production of pig iron is to:

• A. play the role of an iron ore

• B. act as a flux and remove impurities in the molten iron as slag

• C. act as a fuel to supply heat for the various chemical reactions

• D. cool the molten iron.

Question 10

The type of crystal structure shown in Figure 3 is called:

(Refer to Figure 3 in image_5fb6dc.jpg – showing a hexagonal unit cell arrangement)

• A. Body-Centered Cubic (BCC)

• B. Face-Centered Cubic (FCC)

• C. Hexagonal-Closed-Pack (HCP)

• D. Body-Hexagonal Closed-Pack (BHP)