GATE 2022 Rapid Revision Quiz 22

Consider following air pollutants

1. NO₂

2. H₂SO₄

3. O₃

4. Formaldehydes

Which of these pollutant(s) is/are secondary pollutant:

A trapezoidal channel has a bottom width of 6m and a side slope of 1:1. The Depth of flow is 1.5m at a discharge of 15cm/sec. The hydraulic radius and average hydraulic Depth of flow, respectively, are---

A factory uses 1.5 ML of fuel oil per month. The exhaust gases from the factory contain the following quantities of pollutants per ML per year. (Consider 300 working days in a year and 24 hours per working day)

I) Particulate matter= 4 ton/year
II) SO₂ =20 ton/year
III) NO_X =5 ton/year
IV) HC, CO and other = 3 ton/year
Determine the minimum height of the chimney for the safe dispersion of the pollutants.

An open channel is of isosceles triangle shape, with side slopes 1 vertical and n horizontal. The ratio of the critical depth to specific energy at critical depth will be

The water pressure at the base of gravity dam at the upstream was found to be 49.85 kN/m². If the self-weight of the dam is 590.62 kN, the factor of safety against sliding (neglecting uplift forces) will be. Consider the coefficient of friction is equal to 0.25.

The uplift force on a dam having water depth of 65m at upstream and 5m at downstream and base width of 30m with no infiltration gallery provided will be _______kN. [Take Y_w = 9.81 KN/m³]