Atoms and Elements Study App | IGCSE O Level Chemistry MCQs e-Book PDF
IGCSE O Level Chemistry MCQs (O Level) From Textbook

IGCSE O Level Chemistry MCQs – Mock Test 64

Atoms and Elements MCQ with Answers PDF Download – Test 64

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Free "Atoms & Elements Study" App Download (iOS & Android): Symbol of Cobalt is; MCQ with answers: cu, co, ca, and cl. Practice Elements, Compounds and Mixtures Questions and Answers, Google e-Book to download free chapter to utilize chemistry digital materials.

Atoms & Elements MCQ – Mock Test 64 PDF Download

MCQ 316: Symbol of Cobalt is:

  1. Co
  2. Cu
  3. Cl
  4. Ca

MCQ 317: Which of the following has a pH of 7?

  1. sugar solution only
  2. salt solution only
  3. strong acids
  4. sugar and salt solution

MCQ 318: Presence of impurities in ethanol (C2H5OH) will:

  1. lower the boiling point
  2. raise the boiling point
  3. lower the rate of evaporation
  4. none of above

MCQ 319: Substances which transform from solid into a gas directly, are called as:

  1. Amphoteric oxides
  2. basic oxides
  3. sublimations
  4. neutral oxides

MCQ 320: In the presence of phenolphthalein, alkali shows:

  1. blue color
  2. violet color
  3. pink color
  4. green color

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