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Question 21

Which of the following mineral salt is a trace element?

  • A.calcium
  • B.zinc
  • C.carbon
  • D.potassium
Objective

Question details

Exam body
NDA
Subject
Biology
Year
2016/2017
Question no.
#21
Type
Objective
Previous · Q20The study of freshwater habitats and the ecosystem is called_____ Next · Q22 Which of the enzyme is present in the saliva?

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