IGCSE O Level Chemistry Competitive Exam MCQs – Practice Test 5 (Chapter 3)

Chemical Formulae and Equations MCQs with Answers PDF Download – Test 5

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Download the "Chemical Formulae and Equations MCQs" App: To balance Al(OH)₃ + HNO₃ &rarr Al(NO₃)₃ + H₂O, number of Al(OH)₃ molecules will be; MCQ with answers: 2, 1, 3, and 4. Solve Chemical to Electrical Energy Quiz Questions, download Google e-Book (Free Chapter) to strengthen chemistry virtual support.

Chemical Formulae & Equations MCQs with Answers PDF Download: MCQ Quiz 5

MCQ 21: The formula of carbonic acid is:

HCO₂
HCHO₃
H₂CO₂
H₂CO₃

MCQ 22: To balance Al(OH)₃ + HNO₃ → Al(NO₃)₃ + H₂O, number of Al(OH)₃ molecules will be:

MCQ 23: In Na₂CO₃.10H₂O, percentage of water is:

0.5009
0.1699
0.6507
0.6294

MCQ 24: All of these radicals have a valency of 1, except:

OH
CO₃
NO₃
HCO₃

MCQ 25: A white smoke consisting of fine white solid particles is formed by:

propane
butane
magnesium oxide
tin oxide

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