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ALKYNE MCQs

Total Questions : 34 | Page 3 of 4 pages
Question 21. What happen to bromine water when react with ethene?
  1.    Orange solution turns green
  2.    Purple solution turn colourless
  3.    Brown solution turn colourless
  4.    Pink solution turn colourless
 Discuss Question
Answer: Option C. -> Brown solution turn colourless
Question 22. The major product when 2-pentanol react with concentrated sulphuric acid in 140oC is
  1.    1-pentene
  2.    methyl ethyl acetylne
  3.    dimethylethylene
  4.    pent-2-ene
 Discuss Question
Answer: Option D. -> pent-2-ene
Question 23. What kind of carbide that you can used, when you want to produce propyne?
  1.    Mg3C3
  2.    Ca2C3
  3.    CaC3
  4.    Mg2C3
 Discuss Question
Answer: Option D. -> Mg2C3
Question 24. CH3CH2CH2CH=CHCH2CH3
  1.    2-Butene
  2.    3-Heptene
  3.    2-Methyl-2-Pentene
  4.    None of these
 Discuss Question
Answer: Option B. -> 3-Heptene
Question 25. Select the correct name of the following formula
  1.    Hexane
  2.    Hexene
  3.    Hexanol
  4.    Hexyne
 Discuss Question
Answer: Option D. -> Hexyne
Question 26. What is the name of the reaction when alkenes react with HCl?
  1.    Hydrogenation
  2.    Halogenation
  3.    Hydrohalogenation
  4.    Hydration
 Discuss Question
Answer: Option C. -> Hydrohalogenation
Question 27. Compounds that are composed of the same number and type of atoms but have them arranged in different ways are ___________
  1.    isomers
  2.    isotopes
  3.    polymers
  4.    alkanes
 Discuss Question
Answer: Option A. -> isomers
Question 28. What is the general formula of an alkane
  1.    2n+2
  2.    CnH2n+2
  3.    CnH2n
  4.    CnHn
 Discuss Question
Answer: Option B. -> CnH2n+2
Question 29. Which of the following is not produced by fractional distillation of petroleum?
  1.    diesel fuel
  2.    ethanol
  3.    paraffin
  4.    petrol
 Discuss Question
Answer: Option B. -> ethanol
Question 30. Heptane has
  1.    5 carbons
  2.    6 carbons
  3.    7 carbon
  4.    8 carbons
 Discuss Question
Answer: Option C. -> 7 carbon

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