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प्रश्न
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 |
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उत्तर
| Straight chain hydrocarbons | Branched chain hydrocarbons | Cyclic hydrocarbons |
| Propane | Isobutylene | Cyclohexane |
| Propyne | Isobutane | Cyclohexene |
| Propene | Cyclopentane | |
| Benzene |
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संबंधित प्रश्न
Write the molecular formula of first two members of homologous series having functional group −Br.
Write the molecular formula of first two members of homologous series having functional group – OH
Give the molecular formula of one homologue of the following:
C3H6
By how many carbon atoms and hydrogen atoms do any two adjacent homologues differ?
Write the names and formulae for the first three members of the homologous series for chloroalkanes.
What is a homologous series? Explain with an example.
The molecular formula of a homologue of butane is:
(a) C4H8
(b) C3H6
(c) C4H6
(d) C3H8
The number of carbon atoms present in the molecule of fifth member of the homologous series of alkynes is:
(a) four
(b) five
(c) six
(d) seven
Write the name and molecular formula of the first member of the homologous series of alkynes.
Complete the correlation:
Alkene : C = C :: Alkyne: _______.
The unsaturated hydrocarbons containing a carbon-carbon double bond are called _______.
The phenomenon in which compounds having different structural formulae have the same molecular formula is called _______.
As one ascends in any homologous series, physical properties change gradually.
Write a short note.
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 |
Observe the structural formula and answer the following questions.
- Write the name of the given hydrocarbon.
- The given hydrocarbon is included in which type of hydrocarbon?
- What is the kind of compounds with the above characteristic structure called?
The first member of alkyne homologous series is
Name the third homologue of alcohols.
Name the following:
Group of organic compounds where the successive members follow a regular structural pattern, successive compounds differ by a 'CH2' group.
