IGCSE O Level Chemistry Practice Test 11
Valence Electrons Quiz Questions with Answers PDF Download - 11
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Valence Electrons Quiz with Answers PDF Download: MCQs 11
Number of electrons (e-) in phosphorus (P) is 15, valence electrons shall be
- 2
- 8
- 5
- 4
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
In Universal indicators, red color shows
- strong acids
- strong alkalis
- weak acids
- weak bases
In the periodic table, valence electrons are indicated by
- Group Number
- Shell Number
- Period Number
- Atomic mass
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 Exam Prep Tests
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