Question

Identify the use of HDP from following.

• A. Insulation of electric cables
• B. Manufacture of toys
• C. Submarine cable insulation
• D. Producing extruded films

Hint:

HDP is a strong and durable plastic suitable for products that require resistance to impact and wear.

Answer 1

The Correct Option is A

Concept:
HDP stands for High-Density Polyethylene (HDPE). It is a polymer of ethene having:

• High tensile strength
• Hardness and rigidity
• Chemical resistance
• Moisture resistance
• Good durability

Because of these properties, HDPE is used where strong and tough plastic is required.
Step 1: Check Option A: Insulation of electric cables
Cable insulation usually requires flexibility and softness. LDPE is generally preferred over HDPE. \[ \Rightarrow \text{Not the best use of HDPE} \]
Step 2: Check Option B: Manufacture of toys
Toys need:

• Toughness
• Impact resistance
• Easy molding
• Long life

HDPE satisfies these properties well. \[ \Rightarrow \text{Suitable application} \]
Step 3: Check Option C: Submarine cable insulation
Specialized insulating materials are commonly preferred for submarine cables. \[ \Rightarrow \text{Not standard answer} \]
Step 4: Check Option D: Producing extruded films
Film production commonly uses LDPE because it is more flexible. \[ \Rightarrow \text{Less suitable than HDPE toy use} \]
Step 5: Final Answer
The common use of HDP is: \[ \boxed{\text{Manufacture of toys \] Quick Tip:
HDPE = hard, strong plastic used in toys, bottles, pipes, and containers.