IGCSE O Level Chemistry MCQs (O Level) From Textbook

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IGCSE O Level Chemistry MCQs – Mock Test 78

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The MCQ: Duration of bright-bulb can be enhanced, if along with copper; "IGCSE O Level Chemistry MCQ" App (Android, iOS) with answers: the acid is more dilute, magnesium is used, graphite, and zinc to learn online schools courses. Practice Electricity and Chemistry Questions and Answers, Google Book to download free chapter for free online college courses.

Chemical to Electrical Energy MCQs – Mock Test 78 PDF Download

MCQ: 386

Duration of bright-bulb can be enhanced, if along with copper

  1. magnesium is used
  2. the acid is more dilute
  3. zinc
  4. graphite
MCQ: 387

Sulfate ion can be written symbolically as

  1. SO42-
  2. SO32-
  3. SO42-
  4. S2-
MCQ: 388

What is true about Impurities?

  1. they lowers the boiling point
  2. they lowers the freezing point
  3. they lowers melting points
  4. they raises the melting point
MCQ: 389

Sodium Carbonate Na2CO3 indicates that for each Carbonate ion (CO3-2), number of Sodium ions (Na+) are

  1. 1
  2. 2
  3. 3
  4. 4
MCQ: 390

The chemical formula of anhydrous Monosodium Phosphate is

  1. NaPO3
  2. NaH2PO4
  3. Na2CO3.10H2O
  4. NaH2PO4.H2O

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