GATE ES Environmental Management Systems PYQs & Answers

Questions 1–6 of 6. Imported answers require independent review unless marked reviewed.

Based on the ISO 14040 methodology for Life Cycle Assessment, match the terms with the descriptions in the table.

Term	Description
(a) Goal and Scope	(i) Based on the product or system, the comparative unit must be carefully defined and be same for all scenarios
(b) Functional Unit	(ii) The problem is described, and the objective of the study are defined
(c) Life Cycle Inventory	(iii) Evaluates the environmental implications due to the inventorized emissions
(d) Impact Assessment	(iv) Process based approach and input-output approach

The correct match(es) is/are

Your answerSelect all correct options. You can choose more than one.

(a)-(ii); (b)-(i);

(a)-(ii), b-(i)

(c)-(ii), (d)-(iv)

(c)-(iv), (d)-(iii)

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Read the following statements

I. The goal of Life Cycle Analysis (LCA) is to assess the environmental impact of products from a system perspective and to identify possible improvement strategies.

II. Environmental Impact Assessment (EIA) is defined as a process of identifying, predicting, and evaluating the likely impacts of a proposed project or development to define mitigation actions to reduce negative impacts and to provide positive contributions to the natural environment and well-being.

The correct choice is

Your answerChoose one option.

I is correct; II is incorrect

II is correct; I is incorrect

Both I and II are correct

Both I and II are incorrect

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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.

Greenhouse gas emissions (kg CO

equivalent/f.u.) from the ‘Material extraction’ phase of product P is higher than that of product Q.

Greenhouse gas emissions (kg CO

equivalent/f.u.) from the ‘Production phase’ of product Q is higher than that of product P.

Greenhouse gas emissions (kg CO

equivalent/f.u.) from the ‘End of life disposal’ is higher for product Q than that of product P.

Greenhouse gas emissions (kg CO

equivalent/f.u.) from the ‘complete life cycle’ of the product P is higher than that of product Q.

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An adult of 65 kg weight and life span of 65 years drinks water for 5 years, which is contaminated with toluene of concentration 0.15 mg/L. For toluene, reference dose is 0.200 mg/kg-d. The person drinks 2 L of water per day. The hazard quotient from the toluene exposure for the adult will be ____________(rounded off to three decimal places).

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The Ministry of Environment, Forest and Climate Change (MoEF&CC), Govt. of India has published the Environment Impact Assessment (EIA) draft Notification 2020, intended to replace the existing EIA Notification, 2006 under the Environment (Protection) Act, 1986. Which of the following is/are the key change(s) from existing regulation?

Your answerSelect all correct options. You can choose more than one.

Removal of several project/ activities from the purview of public consultation.

A list of projects has been included under Category B2, expressly exempted from the requirement of an EIA.

All the project related activities are brought under the purview of necessary public consultation.

A list of projects has been included under Category B2, bring them under the requirement of detailed EIA.

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The following block diagram highlights the typical phases of the life cycle of a product. In the figure, ‘P’, ‘Q’, and ‘R’ represent various possible scopes of analyses in life cycle assessment. Which of the following statements is true?

Diagram for Environmental Science and Engineering question 11

Your answerChoose one option.

‘R’ represents cradle-to-grave analysis.

‘P’ represents cradle-to-gate analysis.

‘Q’ represents gate-to-gate analysis.

‘R’ represents gate-to-gate analysis.

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GATE ES Environmental Management Systems PYQs

How to practice Environmental Management Systems

Question 48

Question 27

Question 46

Question 64

Question 33

Question 11