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Topic 10: Organic Chemistry


6. Alkane hydrocarbons: Recalling concept facts and definitions

1. Which bond type best describes molecules of compounds in the alkane series of hydrocarbons?

1) They contain single ionic bonds
3) They contain double covalent bond
2) They contain single covalent bonds 4) They contain double ionic bond

2. Which is true of all alkanes?
1) They are saturated hydrocarbons 3) They may contain halogens
2) They are unsaturated hydrocarbons 4) They may contain oxygen

3. The general formula for all alkane compounds is 4) CnH2n+6


1) CnH2n
2) CnH2n-2
3) CnH2n+2
4. All members of alkane hydrocarbon have IUPAC names ending with
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1) –yl 2) –al 3) –ene 4) –ane

5. The total number of electrons shared between two adjacent carbon atoms in an alkane molecule is
1) 1 2) 2 3) 3 4) 4

6. The total number of pair of electrons found between two carbon atoms in a single bond is
1) 1 pair 2) 2 pairs 3) 3 pairs 4) 4 pairs

7. Each member in an alkane series of hydrocarbons, when considered in successive order, has one
more carbon atom and how many more hydrogen atoms?
1) 1 2) 2 3) 3 4) 4

7. Alkane hydrocarbons: Recognizing names and formulas of alkanes
1. Which two compounds belong to the alkane series of hydrocarbon?
1) Methane and ethane 3) Ethane and ethene
2) Methane and ethene 4) Ethene and ethyne
2. Which two IUPAC names are of compounds of alkane?
1) Pentane and pentene 3) Butane and butyne
4) Hexane and nonane
2) Propene and methane

3. Which two formulas are of compounds belonging to alkane series?
1) C4H6 and C4H8

3) C2H4 and C4H6


2) C11H22 and C11H24 4) C8H18 and C9H20
4. Which set of formulas belong to substances from alkane hydrocarbon series of organic compounds?
1) CH3 and CH4 3) CH4 and C12H26
2) C2H2 and C3H4 4) C2H6 and C12H24

5. Which set of structural formulas correctly represents members of alkane series?



1 ) and 3) and




2) and 4) and

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