IGCSE O Level Chemistry Competitive Exam MCQs – Mock Test 11

Valence Electrons Notes Questions with Answers PDF Download – Test 11

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Valence Electrons MCQs – Mock Test 11 PDF Download

MCQ 51: Number of electrons (e^-) in phosphorus (P) is 15, valence electrons shall be:

MCQ 52: Which statement is true about when the hot molten liquid cools?

first crystals are the most pure
impure substances may also form the crystals
it turns into gas
it turns into aqueous solution

MCQ 53: In Universal indicators, red color shows:

strong acids
strong alkalis
weak acids
weak bases

MCQ 54: In the periodic table, valence electrons are indicated by:

Group Number
Shell Number
Period Number
Atomic mass

MCQ 55: What is true about bases (OH^-)?

they are corrosive
they turn litmus from blue to red
they turn litmus from red to blue
they are non-metal oxides

IGCSE O Level Chemistry Notes App & eBook – Valence Electrons Competitive Exam

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Relative Molecular Mass MCQs

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Pure Substances and Mixtures MCQs

Acids: Properties and Reactions MCQs

Chemical formulas MCQs

Atoms and Elements MCQs

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