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प्रश्न
Give three points to differentiate between saturated and unsaturated
hydrocarbons.
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उत्तर
| S.No. | Saturated organic comnound | Unsaturated organic comnound |
| 1. | All the four valencies of each carbon atom are satisfied by forming single covalent bonds with carbon and with hydronen atoms. | The valencies of at least two carbon atoms are not fully satisfied by the hydrogen atoms. |
| 2. | Carbon atoms are joined only by a single covalent bond | Carbon atoms are joined by double covalent bonds or by trinle covalent bonds. |
| 3. | Less reactive | More reactive |
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संबंधित प्रश्न
Write the molecular formula of the 2nd and 3rd member of the homologous series where the first member is ethyne.
Carbon compounds have usually ______ melting points and boiling points because they are ______ in nature.
Write the names and formulae for the first three members of the homologous series of chloroalkanes.
What is the difference in the molecular formula of any two adjacent homologues:
(i) In terms of molecular mass
(ii) In terms of number and kind of atoms per molecule?
There are different general molecular formula for all members of the homologous series.
Complete the following table for the homologous series of alkanes.
| Name | Molecular formula | Condensed structural formula | Number of carbon atom | Number of -CH2- units | Boiling point °C |
| Methane | CH4 | CH4 | 1 | 1 | -162 |
| Ethane | C2H6 | CH3–CH3 | 2 | 2 | -88.5 |
| Propane | C3H8 | CH3–CH2–CH3 | 3 | 3 | -42 |
| Butane | C4H10 | CH3–CH2–CH2–CH3 | ______ | ______ | 0 |
| Pentane | C5H12 | CH3–CH2–CH2–CH2–CH3 | ______ | ______ | 36 |
| Hexane | C6H14 | CH3–CH2–CH2–CH2–CH2–CH3 | ______ | ______ | 69 |
Complete the following chart by using examples given in brackets.
(isobutylene, cyclohexane, propane, cyclohexene, cyclopentane, benzene, propyne, isobutane, propene)
| Straight chain hydrocarbons | Branched chain hydrocarbons | Cyclic hydrocarbons |
The first member of alkyne homologous series is
Name the third homologue of aldehydes.
Name the following:
Group of organic compounds where the successive members follow a regular structural pattern, successive compounds differ by a 'CH2' group.
