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Tenth Grade (Grade 10) Organic Chemistry Questions

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Grade 10 Organic Chemistry
Enzymes                      chemical reactions in living systems by                       the activation energy.
  1. slow down, decreasing
  2. slow down, increasing
  3. speed up, decreasing
  4. speed up, increasing
  5. stop, eliminating
Grade 10 Organic Chemistry
What is the name of the compound shown below?
Formula - Toluene
  1. Benzene
  2. Methylpentene
  3. Toluene
  4. (1) and (2)
Grade 10 Organic Chemistry
Which of the following chemical formulas represents an organic compound that belongs to the same homologous series as that of the hydrocarbon shown below?
Formula - Alkene
  1. [math]"C"_3 "H"_8[/math]
  2. [math]"C"_4 "H"_10[/math]
  3. [math]"C"_2 "H"_2[/math]
  4. [math]"C"_6 "H"_12[/math]
Grade 10 Organic Chemistry
Carbon can bond with one or more carbon atoms, producing a variety of
  1. hydrocarbons
  2. amino groups
  3. carbon skeletons
  4. inorganic molecules
Grade 10 Organic Chemistry
Grade 10 Organic Chemistry
What is the general formula of alkenes?
  1. [math]C_nH_(2n)[/math]
  2. [math]C_nH_(2n+2)[/math]
  3. [math]C_nH_(2n+1)[/math]
  4. [math]C_nH_(2n +1[/math]
Grade 10 Organic Chemistry
What is the general formula of alkynes?
  1. [math]C_nH_(2n-2)[/math]
  2. [math]C_nH_(2n+2)[/math]
  3. [math]C_nH_(2n+1)[/math]
  4. [math]C_nH_(2n -1)[/math]
Grade 10 Organic Chemistry
Which statement correctly describes one property of hydrocarbons?
  1. Hydrocarbons will not dissolve in water.
  2. Hydrocarbons have a high boiling point.
  3. Hydrocarbons contain ionic bonds.
  4. Hydrocarbons can contain oxygen atoms.
Grade 10 Organic Chemistry
Grade 10 Organic Chemistry
Grade 10 Organic Chemistry
Which of the following is a hydrocarbon?
  1. propene
  2. ethanal
  3. methanol
  4. butanoic acid
Grade 10 Organic Chemistry
Which statement correctly describes ethane and butane?
  1. They have only single bonds.
  2. They have the same number of hydrogen atoms.
  3. They have the same number of carbon atoms.
  4. They have only double bonds.
Grade 10 Organic Chemistry
Grade 10 Organic Chemistry
Which statement correctly describes the molecular polarity of a hydrocarbon?
  1. Hydrocarbons are generally nonpolar, because they are asymmetrical
  2. Hydrocarbons are generally polar, because they are asymmetrical
  3. Hydrcarbons are generally nonpolar, because they are symmetrical
  4. Hydrocarbons are generally polar, because they are symmetrical
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