GATE ES · 2023 · ES
Question 46: Environmental Management Systems
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Question 46
ESMSQ2 marksNeeds review
Products P and Q have life cycle phases of material extraction, production, use, and end of life disposal. CH
, CO
emissions and mass used per functional unit (f.u.) from the different phases of the products are given in the following tables.Product P
Phase | CO emissions, kg/tonne | CH emissions, kg/tonne | Mass, tonne/functional unit (f.u.) |
|---|---|---|---|
Material Extraction | 1.0 | 0.75 | 4.0 |
Production | 1.5 | 1.0 | 2.0 |
Use | 0.5 | 0.0 | 1.0 |
End of life disposal | 1.0 | 0.25 | 1.0 |
Product Q
Phase | CO emissions, kg/tonne | CH emissions, kg/tonne | Mass, tonne/functional unit (f.u.) |
|---|---|---|---|
Material Extraction | 0.75 | 0.75 | 3.0 |
Production | 0.25 | 1.0 | 2.5 |
Use | 0.0 | 0.5 | 0.75 |
End of life disposal | 2.0 | 0.0 | 0.75 |
Based upon the information given in the tables and using global warming potential of CH
equal to 23 kg of CO
per kg of CH
, which of the following statement(s) is/are true?Your answerSelect all correct options. You can choose more than one.
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2023ES
GATE ES 2023 · Paper 1
Environmental Science and Engineering · Original paper archive
- Section
- Environmental Science and Engineering
- Question type
- Multiple select (MSQ)
- Marks
- 2 marks
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