GATE ES branch:es PYQs & Answers — Page 23

Questions 221–230 of 390. Imported answers require independent review unless marked reviewed.

Read the following statements

I. In environmental laws, the polluter pays principle is enacted to make the polluter responsible for paying for the damage done to the natural environment.

II. The precautionary principle emphasizes caution, pausing and review before going for an innovation that may prove disastrous.

III. The precautionary principle is often used by policy makers in situations where there is the possibility of harm from making a certain decision and conclusive evidence is not yet available.

The correct choice is

Your answerChoose one option.

I is correct; II and III are incorrect

I, II and III are correct

I and III are correct; II is incorrect

I and II are correct; III is incorrect

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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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For the following major Indian environmental acts

i) Environment Protection Act

ii) Water Act (Prevention and Control of Pollution)

iii) Air Act (Prevention and Control of Pollution)

iv) The National Green Tribunal Act

the correct chronological order (oldest to latest of their enactment) is

Your answerChoose one option.

i), ii), iii), iv)

ii), i), iii), iv)

iii), i), iv), ii)

ii), iii), i), iv)

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The kinematic viscosity of glycerin and kerosene are 1.2 times and 0.95 times of that of water, respectively. Glycerin and kerosene flow through identical porous media having same hydraulic gradient. Assuming Darcy’s law is valid for the porous media, the ratio of flow rate of kerosene to that of glycerin is

Your answerChoose one option.

1.052

1.140

0.792

1.263

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A researcher compiled the following information about the performance of a kit in an outbreak

Infection state | Kit response Disease (probability = 0.002) | Positive response (probability = 0.98) No Disease | Positive response (probability = 0.03)

The probability of detecting an infection for a positive result through the kit would be _____________ (rounded off to three decimal places).

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The critical depth in a 2 m wide rectangular channel carry a discharge of 10 m³/s and take value of acceleration due to gravity (g) as 9.81 m/s² is ____________(in m, rounded off to two decimal places).

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The ratio of the moles of CO₂ evolved to the moles of O₂ consumed in respiration also called the respiratory quotient, is calculated for a carbohydrate (C₆H₁₂O₆) as substrate and found to be 1. Under similar conditions, for a fatty acid (C₅₁H₉₈O₆) as substrate, the respiratory quotient is _________ (rounded off to two decimal place).

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The value of

is __________ (rounded off to two decimal places).

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An S-hydrograph was prepared for a catchment of 240 km² using 3-hour unit hydrograph (1 cm rainfall excess). The equilibrium discharge for the S-hydrograph would be __________ (in m³/s, rounded off to two decimal places).

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River water containing two types of spherical suspended particles (clay particles, metal particles) is retained in a sedimentation tank. The clay particles having diameter of 75 μm and specific gravity of 2.65 is settling in the tank with a constant velocity. The velocity of clay particles is 2 times of that of metal particles having specific gravity of 8. Assume discrete settling and laminar flow conditions within the sedimentation tank. The estimated diameter of the metal particles is ________________ (in μm, rounded off to integer)

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GATE ES branch:es PYQs

Question 26

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Question 35