Percent Composition of Elements MCQs Quiz Online Tests pdf Download

Practice MCQs on percent composition of elements, chemistry quiz for online test prep. Chemical formulae and equations quiz has multiple choice questions (MCQ), percent composition of elements test questions and answers as in na2co3.10h2o, percentage of oxygen is, answer key with choices as 0.1678, 0.1608, 0.1659 and 0.1684 for competitive exam prep. Free study guide is to learn percent composition of elements quiz online with MCQs to practice test questions with answers.

MCQs on Percent Composition of Elements Quiz pdf Download

MCQ. In Na2CO3.10H2O, percentage of oxygen is

  1. 0.1678
  2. 0.1608
  3. 0.1659
  4. 0.1684

A

MCQ. In Na2CO3, relative atomic mass of Oxygen is

  1. 12
  2. 24
  3. 36
  4. 48

D

MCQ. In Sulfuric Acid (H2SO4), chemical composition of sulfur is

  1. 0.0204
  2. 0.3265
  3. 0.6531
  4. 0.9821

B

MCQ. Formula of Nitrogen Trichloride (NCl3) is

  1. NaCl2
  2. NaCl3
  3. NCl3
  4. N2Cl3

C

MCQ. Formula of tetra chloromethane is

  1. CCl4
  2. CH4Cl4
  3. C(HCl)4
  4. C4. HCl4

A

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