Assertion :The concentration of pollutants in water or atmosphere is often expressed in terms of ppm. Reason: Concentration in parts per million can be expressed as mass to mass, volume to volume and mass to volume
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Assertion is correct but Reason is incorrect
Both Assertion and Reason are incorrect
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Both Assertion and Reason are incorrect
Open in App
Solution
Verified by Toppr
Ppm means a mass of chemical contaminant per unit volume of water.
Concentration can also be expressed as mass to volume, mass to mass or volume to volume.
For most of the pollution work, the pollutant concentrations are expressed in volumetric terms, i.e; parts per million.
Was this answer helpful?
1
Similar Questions
Q1
Assertion :The concentration of pollutants in water or atmosphere is often expressed in terms of ppm. Reason: Concentration in parts per million can be expressed as mass to mass, volume to volume and mass to volume
View Solution
Q2
Assertion If BOD level of water in reservoir is less than 5 ppm it is not polluted.
Reason High biological oxygen demand means low activity of bacteria in water.
View Solution
Q3
Assertion: The compressibility factor for H2 and He is (1+PbRT) Reason: The compressibility factor for H2 and He can be derived from Van der Waal's equation.
View Solution
Q4
Assertion: The impurities such as SiO2 present in iron ore is removed by CaCO3.
Reason: CaO formed by decomposition of CaCO3 reacts with SiO2 to form slag.