Environmental Science and Engineering
2021 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE ES 2021 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 52–54 of 65. Imported answers require review unless explicitly marked reviewed.
Question 42
Open questionESNAT2 marksNeeds review
Consider a function
which satisfies the following equation:
As
,
, and at
,
.The value of
at
is ________ (answer in integer).Log in to check the answer
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Open questionESNAT2 marksNeeds review
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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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 44
Open questionESNAT2 marksNeeds review
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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