Given below are two statements. In the light of the above statements, choose the correct answer from the options given below.
Statement I:VOCs are among the most commonly found contaminants in ground water.
Statement II:The concentration of VOCs in ground water is much less than in surface waters.
ABoth Statement I and Statement II are true
BBoth Statement I and Statement II are false
CStatement I is true but Statement II is false ✓ Correct
DStatement I is false but Statement II is true
Correct answer: (C) Statement I is true but Statement II is false
Explanation
Volatile organic compounds are indeed among the most frequently detected contaminants in groundwater, so Statement 1 is true.
They enter aquifers from leaking fuel tanks, solvents and industrial spills.
Statement 2 is false because these compounds usually occur at higher concentrations in groundwater than in surface water.
In surface water they escape readily to the air, but underground that volatilisation is limited.
Trapped below the surface, they persist far longer with little chance to disperse.
Common groundwater examples include benzene, toluene and trichloroethylene.
Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.
Practise on Mcqkart →🎓 Book an expert →