Time Left - 15:00 mins
GATE 2019 Environmental Engineering Day 5 Quiz (App update required to attempt this test)
Attempt now to get your rank among 1868 students!
Question 1
There are 20,000 vehicles operating in a city with an average annual travel of 12,000 km per vehicle. The 
emission rate is 2.0 g/km per vehicle. The total annual release of 
will be
emission rate is 2.0 g/km per vehicle. The total annual release of will be Question 2
Two primary air pollutants are
Question 3
The equivalent sound power level (in dB) of the four sources with the noise levels of 60 dB, 69 dB, 70 dB and 79 dB is_______
Question 4
The cumulative noise power distribution curve at a certain location is given below.
The value of L40 is equal to
The value of L40 is equal to
Question 5
The mean indoor airborne Chloroform (CHC13) concentration in a room was determined to be 0.4 µg/m3. Use the following data: T = 293K, P = 1 atmosphere, R = 82.05 × 10–6 atm.m3/mol-K Atomic weights: C = 12, H = 1, CI = 35.5. This concentration expressed in parts per billion (volume basis, ppbv) is equal to
Question 6
Total suspended particulate matter (TSP) concentration is ambient air is to be measured using a high volume sampler. The filter used for this purpose had an initial dry weight of 9.787 g. The filter was mounted in the sampler and an initial air flow rate through the filter was set at 1.5 m3/min. Sampling continued for 24 hours. The airflow after 24 hours was measured to be 1.4 m3/min. The dry weight of the filter paper after 24 hour sampling was 10.283 g. Assuming a linear decline in the air flow rate during sampling, what is the 24 hours average TSP concentration in the ambient air?
- 1868 attempts
- 5 upvotes
- 15 comments
Sep 25ESE & GATE CE
