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Chemistry: Core Concepts MCQs

Waraq MDCAT Review: Chemistry · MDCAT / Pre-Medical · 42 practice questions

1. The oxidation number of oxygen in water is:

  1. A0
  2. B+2
  3. C-2
  4. D-1
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C. -2 Hydrogen is +1.

2. Noble gases are chemically inert because they have:

  1. AOne valence electron
  2. BA complete outer shell
  3. CSeven valence electrons
  4. DUnpaired electrons
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B. A complete outer shell Their octet (or duet) is complete.

3. The order of a reaction is determined:

  1. AExperimentally
  2. BBy the catalyst
  3. CFrom the balanced equation only
  4. DBy the temperature only
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A. Experimentally It comes from the rate law.

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