When hot water is placed into an empty water bottle, the bottle keeps its shape and does not soften. What type of plastic is the water bottle made from?

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Q: (CDS-I/2019)
When hot water is placed into an empty water bottle, the bottle keeps its shape and does not soften. What type of plastic is the water bottle made from?
Which of the following are the reasons/factors for exposure to benzene pollution ? 1. Automobile exhaust 2. Tobacco smoke 3. Wood burning 4. Using varnished wooden furniture 5. Using products made of polyurethane Q. Select the correct answer using the code given below : (a) 1, 2 and 3 only (b) 2 and 4 only (c) 1, 3 and 4 only (d) 1, 2, 3, 4 and 5
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question_subject: 

Science

question_exam: 

CDS-I

stats: 

0,36,80,40,26,14,36

keywords: 

{'plastic': [0, 0, 0, 1], 'thermoplastic': [0, 0, 0, 1], 'water bottle': [0, 0, 0, 1], 'empty water bottle': [0, 0, 0, 1], 'hot water': [0, 0, 0, 3], 'polyurethane': [0, 0, 0, 2], 'bottle': [0, 2, 1, 2], 'thermosetting': [0, 0, 0, 1]}