GS PrelimsScience and TechnologyGeneral Science2022

With reference to polyethylene terephthalate, the use of which is so widespread in our daily lives, consider the following statements : 1. Its fibres can be blended with wool and cotton fibres to reinforce their properties. 2. Containers made of it can be used to store any alcoholic beverage. 3. Bottles made of it can be recycled into other products. 4. Articles made of it can be easily disposed of by incineration without causing greenhouse gas emissions. Which of the statements given above are correct?

A

1 and 3

B

2 and 4

C

1 and 4

D

2 and 3

Correct Answer: Option A

Explanation

1. Statement 1: Polyethylene terephthalate (PET) is used to make polyester fibres. These synthetic fibres are commonly blended with wool and cotton fibres to enhance the resulting fabric's strength, durability, wrinkle resistance, and drying speed, thus reinforcing their properties. This statement is correct. 2. Statement 2: While PET containers are widely used for beverages like water and soft drinks, their suitability for storing all types of alcoholic beverages is questionable. Higher concentrations of alcohol can potentially interact with the plastic over time, affecting taste or leading to leaching. Therefore, stating they can be used for *any* alcoholic beverage is incorrect. 3. Statement 3: PET is highly recyclable. Used PET bottles are frequently collected and processed (recycled) to create new products, including more bottles, polyester fibre for clothing or carpets, and strapping materials. This statement is correct. 4. Statement 4: PET is a carbon-based polymer derived from petroleum. Incineration of PET involves combustion, which releases carbon dioxide (CO2), a major greenhouse gas, along with other substances. Therefore, articles made of it cannot be disposed of by incineration without causing greenhouse gas emissions. This statement is incorrect. 5. Since statements 1 and 3 are correct, the correct option is (A).

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