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Chemistry Grade 10 Unit 6: Hydrocarbons and Their Natural Sources

national exam questions have come from this unit. It runs 66 pages; one careful study pass takes about 7.0 hours, and its difficulty is harder among Chemistry units. Each section below lists the questions set from it, with the year, and opens the page that teaches it.

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6.1 Introduction · read p. 235
6.2 Saturated Hydrocarbons: Alkanes (CnH2n+2) · read p. 240
  • 2018 E.C., Q74 – Which of the following is TRUE about a homologous series?
  • 2018 E.C., Q15 – Which of the following sets shows the correct first four members of the alkane series?
  • 2017 E.C., Q54 – Which of the following is the main constituent of natural gas?
  • 2017 E.C., Q59 – What is the name given to compounds of carbon and hydrogen containing multiple bonds?
  • 2016 E.C., Q2 – Which of the following is the CORRECT method of preparation of alkenes in the laboratory?
  • 2014 E.C., Q50 – What are hydrocarbons? Compounds that contain
  • 2007 E.C., Q64 – No numbers, stereochemistry or other labels are drawn.]
6.3 Unsaturated Hydrocarbons: Alkenes, Alkynes and Aromatic Hydrocarbons · read p. 262
  • 2017 E.C., Q53 – Which of the following organic compounds is used for the production of 1, 2-ethanediol?
  • 2017 E.C., Q52 – 2-methyl-1-butene is one of the isomers of $\mathrm{C_5H_{10}}$. Which of the following is the CORRECT structural formula of this isomer?
  • 2016 E.C., Q63 – Which of the following is the general formula of alkenes?
  • 2016 E.C., Q1 – What are the molecular formulae of an alkene and alkyne containing seven carbon atoms, respectively?
  • 2015 E.C., Q65 – Which one of the following isomers differs in the arrangement of carbon atoms in the longest continuous carbon chain?
  • 2015 E.C., Q66 – Which one of the following methods can be used in the laboratory for the preparation of alkynes?
  • 2015 E.C., Q3 – Which one of the following is NOT TRUE about laboratory preparation of ethylene by dehydration of ethanol?
  • 2014 E.C., Q51 – Which of the following statement is INCORRECT regarding the boiling points of alkanes?
6.4 Aromatic Hydrocarbons: Benzene · read p. 285
  • 2018 E.C., Q43 – Abel is a grade 10 student. He took three different test tubes and added 5.00 ml of toluene to each test tube. Then he added 2 drops of Br₂ water in the first test tube, equal drops of cold KMnO₄ in the second test tube
  • 2012 E.C., Q53 – The number of sigma and pi bonds present in benzene (C6H6) molecule is
  • 2012 E.C., Q47 – What type of bond you observe in phenol other than 5 C-H bond?
6.5 Natural Sources of Hydrocarbons · read p. 290
  • 2018 E.C., Q58 – Which of the following is considered a renewable resource?
  • 2015 E.C., Q2 – Which one of the following petroleum products is used as a solvent and in dry cleaning?
  • 2008 E.C., Q68 – Which of the following statements concerning petroleum is Not correct?