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GATE 2019 Environmental Engineering Day 4 Quiz
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Question 1
A combined sewerage system is more appropriate for developed areas where
Question 2
A coastal city produces municipal solid waste (MSW) with high moisture content, high organic materials, low calorific value and low inorganic materials. The most effective and sustainable option for MSW management in the city is
Question 3
Match the items in Group – I with those in Group – II and choose the right combination.
Group - I
P. Activated sludge process
Q. Rising of sludge
R. Conventional nitrification
S. Biological nitrogen removal
Group – II
1) Nitrifies and denitrifies
2) Autotrophic bacteria
3) Heterotrophic bacteria
4) Denitrifies
Group - I
P. Activated sludge process
Q. Rising of sludge
R. Conventional nitrification
S. Biological nitrogen removal
Group – II
1) Nitrifies and denitrifies
2) Autotrophic bacteria
3) Heterotrophic bacteria
4) Denitrifies
Question 4
Using typical data on MSW, following data is prepared. Find the total energy on ash free dry basis, If ash content found to be 4%? (in KJ/kg)?
Question 5
A household (4 numbers) generates solid waste at the rate of 0.60kg/capita/day and the bulk density of refuse in a typical garbage can that is collected is about 140kg/m3. If the collection is once in two weeks, how many 100 liters garbage cans will be required for a household?
Question 6
A landfill is to be designed to serve a population of 200000 for a period of 25 years. The solid waste (SW) generation is 2 kg/person/day. The density of the un-compacted SW is 100 kg/m3 and a compaction ratio of 4 is suggested. The ratio of compacted fill (i.e. SW + cover) to compacted SW is 1.5. The landfill volume (in million m3) required is _______.
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Jun 4ESE & GATE CE
