IGCSE O Level Chemistry Competitive Exam: Practice Test 21 (Chapter 3)

Chemical Formulae and Equations Multiple Choice Questions (MCQs) PDF Download - 21

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The Chemical Formulae and Equations Multiple Choice Questions (MCQs) with Answers PDF (Chemical Formulae and Equations MCQs PDF e-Book) download Ch. 3-21 to study IGCSE O Level Chemistry Course. Practice Molar Mass MCQs, Chemical Formulae and Equations quiz questions and answers PDF for ACT practice test. The IGCSE O Level Chemistry MCQs App to Download Free Chemical Formulae and Equations App to study reactants, percent composition of elements, chemical symbols career test to learn online school courses.

The MCQ: Molar mass of Copper Oxide (Cu₂O) is "Chemical Formulae and Equations" App Download [Free] with answers: 139.33 g/mol, 113.14 g/mol, 173.298 g/mol, and 143.09 g/mol to learn online school courses. Solve Collection of Gases Quiz Questions, download Google eBook (Free Chapter) for online colleges for teaching.

Chemical Formulae & Equations MCQs with Answers PDF Download: MCQ Quiz 21

MCQ: 101

Molar mass of Copper Oxide (Cu₂O) is

113.14 g/mol
139.33 g/mol
173.298 g/mol
143.09 g/mol

MCQ: 102

Consider the reactants: HNO₃ and BaSO₃

reaction takes place in aquatic state
the reaction results in Barium nitrate
reaction results in barium nitrite
the reaction may not occur at all

MCQ: 103

In Na₂CO₃.10H₂O, after water, the highest percentage composition is of

sodium
oxygen
carbon
hydrogen

MCQ: 104

Copper can have a charge of

2 or 4
4 or 6
3 or 5
2 or 1

MCQ: 105

The formula of Calcium Hydrogen Carbonate indicates that the

charge on Ca is +2
charge on HCO₃ is −1
for each molecule of calcium hydrogen carbonate, one ion of Ca and two ions of hydrogen carbonate ar
all of above

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