1
GATE CE 2022 Set 2
MCQ (Single Correct Answer)
+1
-0.33

A process equipment emits, 5 kg/h of volatile organic compounds (VOCs). If a hood placed over the process equipment captures 95% of the VOCs, then the fugitive emission in kg/h is

A
0.25
B
4.75
C
2.50
D
0.48
2
GATE CE 2022 Set 2
MCQ (More than One Correct Answer)
+1
-0

In a solid waste handling facility, the moisture contents (MC) of food waste, paper waste, and glass waste were found to be MCf, MCp, and MCg, respectively. Similarly, the energy contents (EC) of plastic waste, food waste, and glass waste were found to be ECpp, ECf, and ECg. respectively. Which of the following statements is/are correct?

A
MCf < MCp < MCg
B
ECpp < ECf < ECg
C
ECpp > ECf > ECg
D
MCf > MCp > MCg
3
GATE CE 2022 Set 2
Numerical
+2
-0

At a municipal waste handling facility, 30 metric ton mixture of food waste, yard waste, and paper waste was available. The moisture content of this mixture was found to be 10%. The ideal moisture content for composting this mixture is 50%. The amount of water to be added to this mixture to bring its moisture content to the ideal condition is _________ metric ton. (in integer)

Your input ____
4
GATE CE 2022 Set 2
Numerical
+2
-0

The concentration s(x, t) of pollutants, in a one-dimensional reservoir at position x and time t satisfies the diffusion equation

$${{\partial s(x,t)} \over {\partial t}} = D{{{\partial ^2}s(x,t)} \over {\partial {x^2}}}$$

on the domain 0 $$\le$$ x $$\le$$ L, where D is the diffusion coefficient of the pollutants. The initial condition s(x, 0) is defined by the step-function shown in the figure.

GATE CE 2022 Set 2 Environmental Engineering - Air Pollution Question 5 English

The boundary conditions of the problem are given by $${{\partial s(x,t)} \over {\partial x}}$$ = 0 at the boundary points x = 0 and x = L at all times. Consider D = 0.1 m2/s, s0 = 5 $$\mu$$mol/m and L = 10 m. The steady-state concentration $$\overline s \left( {{L \over 2}} \right) = s\left( {{L \over 2},\infty } \right)$$ at the center x = $${{L \over 2}}$$ of the reservoir (in $$\mu$$mol/m) is __________. (in integer)

Your input ____
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