IGCSE O Level Chemistry Competitive Exam MCQs – Practice Test 13 (Chapter 3)

Chemical Formulae and Equations Multiple Choice Questions and Answers PDF – Test 13

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Free Chemical Formulae and Equations MCQs App Download: Al⁺³ indicates that; MCQ with answers: it has high negative charge, it needs -3 valency to become stable, and aluminum is found in group-ii. Solve Salts: Hydrogen of Acids Quiz Questions, download Google e-Book (Free Chapter) to maximize chemistry engagement.

Chemical Formulae & Equations MCQs with Answers PDF Download – Test 13

MCQ 61: What is true about Spectator ions?

they take active part in forming new products
they remain chemically unchanged in an ionic equation
they act as catalysts
they form suspensions in the liquid

MCQ 62: Al⁺³ indicates that:

it needs -3 valency to become stable
it has high negative charge
Aluminum is found in Group-II
none of above

MCQ 63: In one molecule of Sulfuric Acid (H₂SO₄),:

one ion of hydrogen combines with one ion of sulphate
two ions of sulphate combine with one ion of hydrogen
two ions of hydrogen combine with one ion of sulphate
two ions of hydrogen combine with two ions of sulphate

MCQ 64: Valency of nitrogen can be:

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

MCQ 65: Valency of Phosphate ion PO₄ is:

-1
-2
-3
-4

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

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