Target Exam

CUET

Subject

Chemistry

Chapter

Organic: Polymers

Question:

What range of temperature is generally employed for low density polyethylene formation on kinetic considerations?

Options:

25-50 ᵒC

170-250 ᵒC

200-400 ᵒC

50-150 ᵒC

Correct Answer:

170-250 ᵒC

Explanation:

The correct answer is option 2. 170-250 ᵒC.

The temperature range generally employed for the formation of low-density polyethylene (LDPE) is indeed 170-250 ᵒC.

The production of low-density polyethylene (LDPE) via free radical polymerization requires specific conditions. The process typically involves:

High Pressure: Around 1000-3000 atmospheres.

Temperature: The typical temperature range is indeed around 170-250 °C. This temperature range is suitable for generating free radicals necessary for the polymerization of ethylene.

The correct temperature range for the formation of LDPE on kinetic considerations is 170-250 °C. This range allows for efficient free radical polymerization under the required high-pressure conditions. Therefore, the correct answer is 170-250 ᵒC.