Biology
Which one of the following weeds is effective in controlling water pollution caused by industrial effluents?

Parthenium
Elephant grass
Water hycinth
Mogar grass

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Biology
Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?

All are incorrect
Character of semi permeable membrane is not given
The flow of solution is not possible through semi permeable membrane
Exact concentration of solution is not given

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