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Question
Which of the following is not a heavy metal found in the industrial wastewater?
Which of the following is not a heavy metal found in the industrial wastewater?
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Solution
The correct option is D Sodium
Wastewater from industries like petroleum, paper manufacturing, metal extraction and processing, chemical manufacturing etc., normally contains heavy toxic metals.
Heavy metals are defined as metallic elements that have a relatively high density (> 5 g/cm3) compared to water. Examples of heavy metals include mercury (Hg), cadmium (Cd) Copper (Cu) and lead (Pb).
Hence option a, b and c are incorrect.
Sodium is considered as a lighter metal. The first seven metals in the periodic table are lithium, beryllium, sodium, magnesium, aluminium, potassium and calcium. They are collectively called the “lightest metals”.
Hence option d is correct.
Wastewater from industries like petroleum, paper manufacturing, metal extraction and processing, chemical manufacturing etc., normally contains heavy toxic metals.
Heavy metals are defined as metallic elements that have a relatively high density (> 5 g/cm3) compared to water. Examples of heavy metals include mercury (Hg), cadmium (Cd) Copper (Cu) and lead (Pb).
Hence option a, b and c are incorrect.
Sodium is considered as a lighter metal. The first seven metals in the periodic table are lithium, beryllium, sodium, magnesium, aluminium, potassium and calcium. They are collectively called the “lightest metals”.
Hence option d is correct.
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