IGCSE A Level Chemistry MCQs - Chapter 22
Periodicity Trivia Questions and Answers PDF - 4
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Periodicity Questions & Answers PDF Download: MCQ Quiz 4
MCQ 16: The best electric insulator in four of the following is
- Al2O3
- P4O10
- MgO
- Na2O
MCQ 17: When heated, the metal that burns to produce white flames in a jar of oxygen is
- Al(s) only
- Mg(s) only
- Na(s)
- Al(s)and Mg(s)
MCQ 18: Silicon is classified as
- semi-metal only
- metalloid only
- non-metals
- semi-metal and metalloid
MCQ 19: Electronegativity of oxygen is equal to
- 4.04
- 3.44
- 4.5
- 2.2
MCQ 20: Consider the reaction: Al2O3+NaOH + H2O (l) → NaAl(OH)4 (aq). The moles of NaOH required to balance the equation are
- 1
- 2
- 3
- 4
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