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ALKANE MCQs

Total Questions : 20 | Page 2 of 2 pages
Question 11. Which substance has higher boiling point
  1.    butane
  2.    propane
  3.    2-methylpropane
  4.    2-methylbutane
 Discuss Question
Answer: Option D. -> 2-methylbutane
Question 12. Find the alkane (C5H12), which will give only one type of monohalogenated compound
  1.    2-methylbutane
  2.    2,2-dimethylpropane
  3.    cyclopentane
  4.    n-pentane
 Discuss Question
Answer: Option B. -> 2,2-dimethylpropane
Question 13. Alkane insoluble in water because
  1.    can form Hydrogen bond with water molecule
  2.    alkane soluble in benzene
  3.    alkane soluble in non polar solvent
  4.    can't form Hydrogen bond with water molecule
 Discuss Question
Answer: Option D. -> can't form Hydrogen bond with water molecule
Question 14. The alkanes which will have the highest boiling point is …
  1.    n-pentane
  2.    2-methylbutane
  3.    2,3-dimethylpropane
  4.    n-hexane
 Discuss Question
Answer: Option D. -> n-hexane
Question 15. Light or heat is required for which step in the halogenation of alkane?
  1.    initiation
  2.    propagation
  3.    termination
  4.    none of the above
 Discuss Question
Answer: Option A. -> initiation
Question 16. Looking at the chemical formulae of these compounds, which is an alkane?
  1.    C3H8
  2.    C2H4
  3.    C5H10
  4.    C4H8
 Discuss Question
Answer: Option A. -> C3H8
Question 17. Organic compounds are compounds contain ______________
  1.    O
  2.    C
  3.    N
  4.    S
 Discuss Question
Answer: Option B. -> C
Question 18. Hydrocarbon boiling points increase when branching increases
  1.    true
  2.    false
 Discuss Question
Answer: Option B. -> false
Question 19. The strongest attractive force between Alkane molecules is
  1.    dispersion forces
  2.    dipole-dipole forces
  3.    strong covalent bonds
  4.    hydrogen bonding
 Discuss Question
Answer: Option A. -> dispersion forces
Question 20. Molecules with the same formula but different structures are known as:
  1.    ions
  2.    isomers
  3.    isotopes
  4.    ionic bonds
 Discuss Question
Answer: Option B. -> isomers

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