Given below are two statements :

Statement I : Nano scale metallic and bimetallic particles can efficiently remove common water pollutants such as Poly Chloro Benzenes (PCB), Organo chlorine pesticides and halogenated organic solvents.

Statement II : Nano scale metallic and bimetallic particles cannot reduce heavy metals such as nickel, arsenic, mercury etc.

In the light of the above statements, choose the most appropriate answer from the options given below.

The correct answer is Statement I is correct but Statement II is incorrect.

Key Points Statement I: Nanoscale metallic and bimetallic particles can efficiently remove common water pollutants such as Poly Chloro Benzenes (PCB), Organochlorine pesticides and halogenated organic solvents.

Statement II: Nanoscale metallic and bimetallic particles cannot reduce heavy metals such as nickel, arsenic, mercury etc.

• Nanoscale metallic and bimetallic particles have been found to efficiently remove common water pollutants such as PCBs, organo-chlorine pesticides, and halogenated organic solvents.
• This is because these particles have a high surface area to volume ratio, which enhances their reactivity with water pollutants.
• However, research has also shown that nano-scale metallic and bimetallic particles can reduce heavy metals such as nickel, arsenic, and mercury.
• These particles have been found to be effective in removing heavy metals from water by adsorption, reduction, and precipitation mechanisms.
• Nanoscale metallic and bimetallic particles can reduce heavy metals in water.

Therefore, Statement I is correct, but Statement II is incorrect.