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ALKYNE MCQs

Total Questions : 34 | Page 2 of 4 pages
Question 11. Which type of polymerisation uses two different monomers, both contain a functional group at each end?
  1.    addition polymerisation
  2.    condensation polymerisation
 Discuss Question
Answer: Option B. -> condensation polymerisation
Question 12. What is the correct prefix for three carbons in an organic molecule?
  1.    prop
  2.    tri
  3.    tres
  4.    III
 Discuss Question
Answer: Option A. -> prop
Question 13. What colour does bromine water turn in the presence of an alkene
  1.    Orange
  2.    Blue
  3.    Colourless
  4.    Green
 Discuss Question
Answer: Option C. -> Colourless
Question 14. Which homolgous series contains only C-C single bonds?
  1.    alkanes
  2.    alkenes
  3.    alcohols
  4.    carboxylic acids
 Discuss Question
Answer: Option A. -> alkanes
Question 15. What is a functional group?
  1.    Group of atoms that give specific characteristics to a molecule
  2.    Group of molecules that give specific characteristics to an atom
  3.    Group of molecules that make up a group of atoms
  4.    Group of atoms that give specific characteristics to an element
 Discuss Question
Answer: Option A. -> Group of atoms that give specific characteristics to a molecule
Question 16. When heat is applied to a hydrocarbon and it melts, the energy is being used to
  1.    Break covalent bonds
  2.    Overcome intermolecular forces
  3.    Break a molecule
  4.    Separate atoms
 Discuss Question
Answer: Option B. -> Overcome intermolecular forces
Question 17. Which process produces molecules with longer chains?
  1.    combustion of hydrocarbon
  2.    cracking
  3.    fractional distillation of crude oil
  4.    polymerisation
 Discuss Question
Answer: Option D. -> polymerisation
Question 18. What kind of alkyne that we can obtained, when we react 1,2-dichlorobutane with 2 mole NaNH2?
  1.    but-1-yne
  2.    but-2-yne
  3.    but-3-yne
  4.    no alkyne is obtained
 Discuss Question
Answer: Option A. -> but-1-yne
Question 19. Propene reacts with steam to produce alcohol
  1.    the presence of concentrated phosphoric acid as catalyst at temperature 300°C and pressure 60 atm
  2.    the presence of concentrated sulphuric acid as catalyst at room temperature
  3.    the presence of nikel as catalyst at temperature 180°C
  4.    the presence of ultraviolet
 Discuss Question
Answer: Option A. -> the presence of concentrated phosphoric acid as catalyst at temperature 300°C and pressure 60 atm
Question 20. Which compound produce more sooty flame?
  1.    alkene
  2.    alkane
 Discuss Question
Answer: Option A. -> alkene

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