IGCSE O Level Chemistry Practice Test 11

Valence Electrons Quiz PDF: Questions and Answers - 11

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Valence Electrons Questions and Answers PDF Download: Quiz 11

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

A) 2

B) 8

C) 5

D) 4

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

A) first crystals are the most pure

B) impure substances may also form the crystals

C) it turns into gas

D) it turns into aqueous solution

MCQ 53: In Universal indicators, red color shows

A) strong acids

B) strong alkalis

C) weak acids

D) weak bases

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

A) Group Number

B) Shell Number

C) Period Number

D) Atomic mass

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

A) they are corrosive

B) they turn litmus from blue to red

C) they turn litmus from red to blue

D) they are non-metal oxides

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