GATE ES topic:environmental-science PYQs & Answers — Page 38

Questions 371–380 of 390. Imported answers require independent review unless marked reviewed.

Topic practice 390 questionsPage 38 of 39

Which of the following is/are the dominant mechanism(s) for the removal of spherical particles with diameter less than 10 μm from a gas stream using a fabric filter?

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

Impaction

Gravitation

Interception

Diffusion

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In air pollution, which of the following is/are classified as primary pollutants?

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

Carbon monoxide (CO)

Sulphur dioxide (SO₂)

Ozone (O₃)

Nitrogen dioxide (NO₂)

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Which of the following is/are correct for the process of glycolysis?

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

There is net decrease in standard Gibbs free energy.

The end product is glyceraldehyde 3-phosphate.

First phase includes the phosphorylation of the glucose molecule.

It results in the net gain of NADH.

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In the context of water quality, which of the following is/are correct for the most probable number (MPN) of a water sample?

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

The estimated organisms are gram negative.

It is based on the assumption of Poisson distribution.

It measures the exact number of microorganisms present in the sample.

It includes the quantification of pathogenic virus.

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For any particular location, which of the following would influence the solar radiation incident on a rooftop solar water heater?

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

Heater surface temperature

Day of the year

Hot water temperature

Sky clearness

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, where

, then the value of the ratio

is ________ (answer in integer).

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Consider a function

which satisfies the following equation:

, and at

The value of

is ________ (answer in integer).

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The concentration of NO₂ in the air at NTP is reported as 0.30 ppm (ppm by volume). The concentration of NO₂ in μg/m³ is ________ (rounded off to the nearest integer).

[At NTP, temperature = 298 K, pressure = 1 atm, and one mole of ideal gas occupies 24.45 L]

[Molecular weight of NO₂ = 46 g/mol]

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In open channel flow, the specific energy is the total energy per unit weight of a fluid, where the component potential energy is measured from the bed of the channel as the datum.

A rectangular channel of 10 m width carries 20 m³/s of water. The depth of flowing water is 1 m. The specific energy for this flow condition is ________ m (rounded off to one decimal place).

Consider acceleration due to gravity (g) = 10 m/s².

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Two reservoirs are connected by a pipeline consisting of two pipes ‘A’ and ‘B’ in series. The two pipes are of same length and have the same Darcy friction factor. If the internal diameter of pipe ‘B’ is twice as large as the internal diameter of pipe ‘A’, the ratio of the head loss in pipe ‘A’ to that in pipe ‘B’ is ______ (answer in integer). Neglect all minor losses.

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GATE ES topic:environmental-science PYQs

Question 36

Question 37

Question 38

Question 39

Question 40

Question 41

Question 42

Question 43

Question 44

Question 45