WorksheetsCanal and AQI Quiz
Total questions: 35
Worksheet time: 18mins
Which type of canal requires mechanical power input to function?
Lift Canal
Perennial Canal
Contour Canal
Inundation Canal
Which structure in a canal system is most responsible for controlling both sediment entry and water flow?
Field Channel
Headworks
Distributary
Branch Canal
The Suez Canal saves nearly 7000 km of travel by connecting:
Mediterranean Sea & Red Sea
Red Sea & Black Sea
Arabian Sea & Atlantic Ocean
Pacific Ocean & Mediterranean Sea
Locks are required in a canal system primarily because:
They increase water velocity
Different water levels exist at two ends
They filter water
They reduce salinity
The Indira Gandhi Canal transforms the Thar Desert mainly due to:
Groundwater pumping
Glacier meltwater
Satluj–Beas link diversion from Harike Barrage
Arabian Sea desalination
Aqueducts depend on which engineering principle to function properly?
Turbulent pressure variation
Gravity-induced laminar flow
High-pressure pumping
Capillary action
Which of the following RWH technique specifically works best where subsurface strata are poorly permeable?
Percolation Tank
Recharge Shaft
Gully Plug
Check Dam
The main reason rooftop RWH reduces dependency on municipal water is because it:
Produces groundwater
Directly captures potable rainwater
Blocks stormwater drains
Reduces evaporation losses
Which RWH method is most appropriate for recharging deep aquifers already tapped by tubewells?
Recharge Pits
Recharge Trenches
Tubewell Recharge
Gully Plug
Ahar-Pyne is fundamentally a system of:
Surface storage lagoons
Channel-based irrigation & diversion
Rooftop storage tanks
Subsurface pipelines
Among traditional methods, Kuknds/Kunds are suitable mainly because they:
Store glacial meltwater
Store rooftop runoff in underground tanks
Increase river discharge
Reduce groundwater level
Which water conservation technique BOTH reduces soil erosion AND improves groundwater recharge?
Sprinkler irrigation
Drip irrigation
Contour Bunding
Greywater Recycling
Watershed management deals mainly with:
A river's entire national flow
A specific drainage basin
Artificial aquifer creation
Urban pipeline systems
The greatest limitation of canal irrigation is:
It never causes ecological disturbance
It may lead to waterlogging & salinity problems
It avoids soil erosion completely
It is free of maintenance needs
Which RWH structure is LEAST suitable for regions with extremely slow infiltration rates?
Percolation tank
Recharge pit
Recharge shaft
Surface runoff pond
The Zing system of Ladakh is a technique that mainly harvests:
Flash flood water
Glacial meltwater
Rooftop rainwater
Groundwater seepage
The main reason contour canals maintain steady flow is that:
They move water uphill
They follow natural land curvature
They use multiple pumps
They depend on rainfall
Greywater recycling is best suited for:
Drinking water production
Use in gardening & flushing
Irrigating water-intensive crops
Refilling dams
Advantages of canals include all EXCEPT:
Regional integration
Cheap transport
Guaranteed prevention of siltation
Regular irrigation
The most suitable location for constructing a percolation tank is:
First-order streams with hard rocks
Second–third order streams with fractured/weathered rock
Areas with no runoff
Steep high mountains
The overall AQI at a location is determined by:
Average AQI of all pollutants
Median AQI of all pollutants
Highest AQI among all pollutants
Lowest AQI among all pollutants
If the AQI values are PM2.5 = 95, PM10 = 102, O₃ = 78, then the overall AQI is:
95
78
102
(95 + 102 + 78) / 3
The AQI for each pollutant is computed after measuring pollutant concentration over:
Variable time decided randomly
Fixed time period such as 1-hour or 24-hour averaging
Only yearly averages
Only weekly averages
The AQI method uses the “worst case” approach because:
It is mathematically easier
It ensures the most harmful pollutant dictates public health warnings
It increases average AQI artificially
It removes minor pollutants
If PM2.5 AQI = 150 (Unhealthy) but all other pollutants are below 50 (Good), the final AQI category is:
Good
Moderate
Unhealthy
Cannot be determined
Two pollutants have AQI values of 120 and 120. The overall AQI will be:
60
120
240
Cannot be determined
AQI conversion from concentration is done using:
A universal constant
Pollutant-specific standardized formulas
Only linear equations
Non-mathematical estimations
Which statement is TRUE regarding AQI determination?
AQI increases when more pollutants are added regardless of their level
AQI is based ONLY on PM2.5
AQI reflects the worst pollutant among all measured
AQI reveals the total pollution load
If the concentration of PM10 increases but its AQI is still lower than PM2.5 AQI, then:
PM10 becomes the new AQI
PM2.5 still dominates AQI
AQI is averaged
AQI becomes zero
During AQI calculation, if one pollutant’s data is missing:
AQI cannot be calculated
All pollutants are ignored
AQI is calculated using available pollutants
AQI becomes zero
If pollutant X has the highest concentration but pollutant Y has a higher AQI value, the final AQI is determined by:
Pollutant X
Pollutant Y
Both
Lowest concentration
AQI values are designed to:
Provide chemical composition of pollutants
Compare different pollutants using a common scale
Predict rainfall
Measure only indoor air quality
Which situation shows that the “worst pollutant” method is working correctly?
AQI decreases when a dangerous pollutant rises
AQI equals the pollutant with the highest AQI
AQI equals the pollutant with the lowest AQI
AQI becomes average
If AQI for NO₂ is 80 and PM2.5 formula gives 130 based on concentration, then:
NO₂ is the dominant pollutant
PM2.5 is the dominant pollutant
Both contribute equally
Dominant pollutant cannot be identified
Which step is essential in AQI computation?
Convert concentration of each pollutant → Individual AQI
Average all concentration values
Remove the highest pollutant
Use only PM10 measurements
