Consider the following statements : Chlorofluorocarbons, known as ozone-depleting substances, are used 1. in the production of plastic foams 2. in the production of tubeless tyres 3. in cleaning certain electronic components 4. as pressurizing agents in a

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Q: 42 (IAS/2012)
Consider the following statements : Chlorofluorocarbons, known as ozone-depleting substances, are used
1. in the production of plastic foams
2. in the production of tubeless tyres
3. in cleaning certain electronic components
4. as pressurizing agents in aerosol cans
Which of the statements given above is/are correct?
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question_subject: 

Ecology

question_exam: 

IAS

stats: 

0,121,190,25,20,121,145

keywords: 

{'chlorofluorocarbons': [0, 0, 0, 2], 'ozone': [3, 0, 3, 5], 'aerosol cans': [0, 0, 0, 1], 'substances': [0, 0, 1, 1], 'plastic foams': [0, 0, 0, 1], 'certain electronic components': [0, 0, 0, 1], 'production': [16, 4, 20, 51]}