GATE ES purpose:exam-prep PYQs & Answers — Page 22

Questions 211–220 of 390. Imported answers require independent review unless marked reviewed.

Read the following statements

i. Aerobic heterotrophic bacteria uses organic matter for carbon source and energy source.

ii. Aerobic heterotrophic bacteria uses carbon dioxide for carbon source and energy source.

iii. Aerobic autotrophic bacteria uses carbon dioxide for carbon source and reduced substances for energy source.

iv. Aerobic autotrophic bacteria uses organic matter for getting energy.

The correct choice is

Your answerChoose one option.

(i) is correct; (ii) is correct

(iv) is correct; (i) is incorrect

(i) is correct; (iv) is correct

(ii) is correct; (iv) is incorrect

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A student wants to decide electron acceptor for aerobic, facultative and anaerobic bacteria. In this context, read the following statements

i. Dissolved Oxygen (DO) can act as electron acceptor for aerobic bacteria. ii. Nitrite can act as electron acceptor for aerobic bacteria. iii. Dissolved Oxygen (DO) can act as electron acceptor for anaerobic bacteria. iv. Nitrite can act as electron acceptor for facultative bacteria. The correct choice is

Your answerChoose one option.

(i) is correct; (iv) is correct

(ii) is correct; (iii) is incorrect

(ii) is correct; (iii) is correct

(i) is correct; (ii) is correct

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Which of the following is true according to the Central Pollution Control Board (CPCB), Government of India’s notification issued in the year 2009?

Your answerChoose one option.

24 hour averaged standard for PM₂.₅ in ambient air is 60 μg/m³; 24 hour averaged standard for PM₁₀ in ambient air is 100 μg/m³

24 hour averaged standard for PM₂.₅ in indoor air is 60 μg/m³; 24 hour averaged standard for PM₁₀ in ambient air is 100 μg/m³

24 hour averaged standard for PM₂.₅ in ambient air is 60 μg/m³; 24 hour averaged standard for PM₁₀ in indoor air is 100 μg/m³

24 hour averaged standard for PM₂.₅ in indoor air is 60 μg/m³; 24 hour averaged standard for PM₁₀ in indoor air is 100 μg/m³

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The sub index values of NO₂, SO₂ and PM₁₀ are 80, 80 and 100, respectively. According to the National Air Quality Index (NAQI) released by the Government of India in the year 2015, the overall NAQI is

Your answerChoose one option.

260

100

151

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Which of the following is NOT a designated waste category under Bio-medical Waste Management Rules, 2016 of Government of India?

Your answerChoose one option.

Yellow

Green

Red

Blue

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Consider the following waste categories

i) Domestic Hazardous Waste ii) Nuclear Waste iii) Sludge from wet scrubbers of hazardous waste treatment processes iv) Chromium bearing residue and sludge from leather tanneries

Which one of the options correctly represents the waste categories NOT covered under Hazardous and Other Wastes (Management and Transboundary Movement) Rules, 2016 of Government of India?

Your answerChoose one option.

(i) and (ii) only

(i) and (iii) only

(ii) and (iv) only

(i), (ii) and (iii) only

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Match the following

Plastic Type P. High-density polyethylene (HDPE) Q. Low-density polyethylene (LDPE) R. Polyethylene terephthalate (PET) S. Polystyrene (PS)

Common applications (i) Garbage bags, bubble packing (ii) Pharmaceutical bottles, Styrofoam cups (iii) Water bottles (iv) Geomembrane for landfill liner

Your answerChoose one option.

P – (iv), Q – (i), R – (iii), S – (ii)

P – (i), Q – (iii), R – (ii), S – (iv)

P – (iv), Q – (ii), R – (i), S – (iii)

P – (ii), Q – (iii), R – (iv), S – (i)

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Place the following international conventions/conferences/protocols/declarations in the chronological order (oldest to latest) of their happening

i) United Nations conference in Stockholm which resulted in the establishment of the United Nations Environmental Program (UNEP) ii) Vienna convention for the protection of the Ozone layer iii) United Nations climate change conference in Glasgow commonly referred as COP26 iv) Montreal protocol on phasing out production of substances related to Ozone layer depletion

Your answerChoose one option.

i, ii, iv, iii

i, ii, iii, iv

ii, iv, i, iii

iv, iii, ii, i

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The correct ascending order of the following greenhouse gases with respect to their global warming potential relative to CO₂ in the time horizon of 100 years is

Your answerChoose one option.

CH₄ < N₂O < CFCl₃ < CF₂Cl₂

CF₂Cl₂ < CH₄ < N₂O < CFCl₃

CH₄ < N₂O < CF₂Cl₂ < CFCl₃

N₂O < CFCl₃ < CH₄ < CF₂Cl₂

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Read the following statements with reference to the Kyoto Protocol on Climate Change

i) Each signatory (country) has common and equal responsibility. ii) Clean development mechanism (CDM), joint implementation (JI) and international emission trading are the three mechanisms under Kyoto Protocol to reduce the greenhouse gas emissions. iii) Under Kyoto Protocol, India has agreed to reduce its greenhouse gas emissions by half by 2050 as compared to 2005 emissions.

Which one of the following is correct choice?

Your answerChoose one option.

only i) is TRUE

only ii) is TRUE

only i) and ii) are TRUE

only ii) and iii) are TRUE

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GATE ES purpose:exam-prep PYQs

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