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General Science

HYDROCARBONS MCQs

Total Questions : 18

Page 1 of 2 pages
Question 1. In complete combustion, the products are?
  1.    Carbon monoxide and water
  2.    Carbon dioxide and water
  3.    Carbon dioxide and carbon
  4.    Carbon and water
 Discuss Question
Answer is Option B. -> Carbon dioxide and water
Question 2. When the ring on a Bunsen burner is closed during a combustion reaction , soot forms
  1.    carbon dioxide
  2.    carbon
  3.    carbon monoxide
  4.    burnt propane
 Discuss Question
Answer is Option B. -> carbon
Question 3. Which of the following will react with Br2(l)
  1.    hexene 
  2.    cyclohexane
  3.    hexane
  4.    alkanes
 Discuss Question
Answer is Option A. -> hexene 
Question 4. How many carbon atoms are in ethane?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer is Option B. -> 2
Question 5. Which of the following would have the highest boiling point?
  1.    C3H8
  2.    C4H8
  3.    C5H12
  4.    C22H44
 Discuss Question
Answer is Option D. -> C22H44
Question 6. Limewater turning cloudy is the test for
  1.    carbon dioxide
  2.    water
  3.    hydrogen
  4.    oxygen
 Discuss Question
Answer is Option A. -> carbon dioxide
Question 7. Identify the main characteristics of an organic compound
  1.    High melting point
  2.    polar
  3.    conductor
  4.    can exist in solid, liquid, and gas
 Discuss Question
Answer is Option D. -> can exist in solid, liquid, and gas
Question 8. Which of the following is correct about structural isomers?
  1.    They have different molecular formulas
  2.    They must have any double or triple bonds in the same position
  3.    They can be either positional or chain isomers
  4.    They must have the same length main chain
 Discuss Question
Answer is Option C. -> They can be either positional or chain isomers
Question 9. Identify the main characteristics of an organic compoung
  1.    Low melting point
  2.    nonpolar
  3.    non-conductor
  4.    All of the above
 Discuss Question
Answer is Option D. -> All of the above
Question 10. What is a cycloalkane?
  1.    a cyclic hydrocarbon
  2.    a cyclic hydrocarbon that contains only single bonds
  3.    a cyclic hydrocarbon with at least one alkyl group
  4.    a six-carbon alkane in the shape of a ring
 Discuss Question
Answer is Option B. -> a cyclic hydrocarbon that contains only single bonds
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