Question
Which of the following is an indicator of SO2 (Sulfur
dioxide) pollution in the air?Solution
These phycobionts in lichens are susceptible to Sulfur dioxide . Lichens are the finest bio-indicators for air pollution, especially sulphur dioxide contamination, because they primarily obtain their vital nutrients and water from the atmosphere rather than the soil.
A single tap takes 8 hours to fill the entire tank. Initially, only one tap is open, and it fills one-fourth of the tank. At that point, three additiona...
Pipe A and Pipe B together can fill the tank in 15 hours. The capacity of the pipe A is 30% of the capacity of the pipe B. How much time will pipe B alo...
Pipe 'A' can fill a water tank in 6 hours, while pipe 'B' requires 8 hours to do the same. When a third pipe, 'C', also contributes, the tank is filled ...
In what time would a Cistern be filled by three pipes whose diameter are 2cm, 2 2/3cm and 4cm running together, where the largest pipe alone fill it in ...
Pipe ‘A’ can fill a tank in 6 hours whereas pipe ‘B’ can empty it in 18 hours. If both pipes are opened together while pipe ‘B’ is closed af...
Pipe A can fill the empty tank in 25 minutes while pipe B can empty the half-filled same tank in 15 minutes. What is the time require to fill (80/3) % o...
Pipe ‘A’ takes 20 hours to fill a tank. Pipe ‘B’ takes 80 hours to empty the same tank. If both are opened together, then how long will it take ...
Pipe ‘A’ fills a tank in 36 hours and pipe ‘B’ empties it in 90 hours. If both are opened simultaneously, how much time will it take to fill 60%...
The efficiency of inlet pipe 'P' is 60% of the efficiency of another inlet pipe 'Q'. When both pipes are opened together, they fill a tank in 4 hours. H...
Two pipes A and B are opened together to fill a tank. Both the pipes fill the tank in time “x”. If A separately takes 8 minute more time than “x�...
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