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

Chemical Formulae and Equations MCQs with Answers PDF Download – Test 21

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Free Chemical Formulae and Equations MCQs App Download: Consider the reactants: HNO₃ and BaSO₃; MCQ with answers: the reaction results in barium nitrate, reaction takes place in aquatic state, reaction results in barium nitrite, and the reaction may not occur at all. Solve Collection of Gases Quiz Questions, download Google e-Book (Free Chapter) to enhance chemistry remote accessibility.

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

Chemical Formulae & Equations MCQs App & e-Book – IGCSE O Level Chemistry Competitive Exam

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