Percent Composition of Elements MCQs Quiz Online PDF Download

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


MCQ. In Na2CO3, the relative atomic mass of Oxygen is

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


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

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


MCQ. Formula of Nitrogen Trichloride (NCl3) is

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


MCQ. Formula of tetra chloromethane is

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