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IGCSE O Level Chemistry Competitive Exam: Mock Test 11

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The Quiz: Number of electrons (e-) in phosphorus (P) is 15, valence electrons shall be; "Valence Electrons" App (iOS, Android) with answers: 8, 2, 4, and 5 for SAT subject test tutoring. Study Structure of Atom Questions and Answers, Apple Book to download free chapter for best SAT prep courses online.

Valence Electrons Quiz with Answers PDF Download: MCQs 11

MCQ: 51

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

  1. 2
  2. 8
  3. 5
  4. 4
MCQ: 52

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

  1. first crystals are the most pure
  2. impure substances may also form the crystals
  3. it turns into gas
  4. it turns into aqueous solution
MCQ: 53

In Universal indicators, red color shows

  1. strong acids
  2. strong alkalis
  3. weak acids
  4. weak bases
MCQ: 54

In the periodic table, valence electrons are indicated by

  1. Group Number
  2. Shell Number
  3. Period Number
  4. Atomic mass
MCQ: 55

What is true about bases (OH-)?

  1. they are corrosive
  2. they turn litmus from blue to red
  3. they turn litmus from red to blue
  4. they are non-metal oxides

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

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