Question

HDPE water storage tank is an example of:

• A. extrusion process
• B. injection moulding
• C. rotational moulding
• D. thermoforming

Hint:

Rotational moulding is commonly used for large plastic parts like water tanks because it allows uniform thickness and strength.

Answer 1

The Correct Option is C

Step 1: Identify the manufacturing process for HDPE water storage tanks.
HDPE (High-Density Polyethylene) water storage tanks are typically made using rotational moulding, where the material is rotated inside a mould to form a hollow part.

Step 2: Conclusion.
The correct answer is (C) rotational moulding.