Explanation:
I want to say your answer is (D)- b and c.
The elements that must be included in an SDS are physical and chemical characteristics, health effects, exposure limits and the origin of the ads.
<h3>What goes in SDS?</h3>
A Safety Data Sheet shows important information about the chemical to be used.
This includes the physical and chemical characteristics of the chemical, and protective measures against its negative effects. The health effects should also be shown.
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The classification of each of the elements into nonessential element, essential bulk element, or essential trace element are as follows:
Nonessential elements:
Essential bulk elements:
- Carbon,
- Nitrogen,
- Calcium,
- Hydrogen
Essential trace elements:
The complete question
The elements are: Hydrogen, iron, Copper, Nitrogen, Helium, Carbon, Aluminum, Calcium, Argon
<h3>What is Essential and Nonessential Elements?</h3>
Nonessential elements as the name implies are elements which are not necessary for the functional routine of the body and hence are not included in diets.
Essential bulk elements are elements which are needed for the proper functioning of the body and hence are required in relatively large amounts.
Essential trace elements are required in minute quantities in the body.
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