GATE ES purpose:exam-prep PYQs & Answers — Page 3

Questions 21–30 of 390. Imported answers require independent review unless marked reviewed.

Topic practice 390 questionsPage 3 of 39

In the design of air pollution control devices, size of the particles that are removed with 50% efficiency is termed as _____.

Your answerChoose one option.

mean size

mode size

cut size

median size

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The general atmospheric composition of gases in the decreasing order is _____.

Your answerChoose one option.

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Which ONE of the following options is NOT a parameter as a part of proximate analysis of municipal solid waste?

Your answerChoose one option.

Volatile matter

Ash content

Carbon to nitrogen ratio

Moisture content

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A species whose impact on an ecosystem is disproportionately large in comparison to its population is called _____ species.

Your answerChoose one option.

dominant

keystone

apex predator

endemic

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Which ONE of the following principles is directly related to environmental compensation?

Your answerChoose one option.

Intergenerational equity principle

Precautionary principle

Subsidiarity principle

Polluter-pay principle

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As per the United Nations General Assembly resolution adopted in 2015 “Transforming Our World: The 2030 Agenda for Sustainable Development”, the number of sustainable development goals (SDGs) is _____.

Your answerChoose one option.

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Which ONE of the following options CORRECTLY matches the ISO series with their usages in environmental management system (EMS) given in the table?

ISO Series | Environmental Management System (P) ISO 1401 | (i) Environmental labeling (Q) ISO 1420 | (ii) Evaluation of environmental management system (R) ISO 1440 | (iii) Addressing environmental aspects of products (S) ISO 1460 | (iv) Life cycle assessment procedure

Your answerChoose one option.

(P) - (i); (Q) - (ii); (R) - (iii); (S) - (iv)

(P) - (ii); (Q) - (i); (R) - (iv); (S) - (iii)

(P) - (iii); (Q) - (iv); (R) - (i); (S) - (ii)

(P) - (iv); (Q) - (iii); (R) - (ii); (S) - (i)

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Which of the following chemical reactions is/are related to smog formation in the troposphere?

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

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Which of the following processes is/are primarily used to remove the organic matter in sludge?

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

Digestion

Incineration

Magnetic separation

Wet-oxidation

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Which of the following options is/are CORRECTLY listing the species included in Total Kjeldahl Nitrogen (TKN) estimation of an aqueous sample?

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

Ammoniacal – N

Nitrite – N

Nitrate – N

Organic – N

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GATE ES purpose:exam-prep PYQs

Question 21

Question 22

Question 23

Question 24

Question 25

Question 26

Question 27

Question 28

Question 29

Question 30