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प्रश्न
Write names of first four homologous series of alcohols.
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उत्तर
Name of first four homologous series of alcohols.
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.
What is the next higher homologue of methanol (CH3OH)?
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 of chloroalkanes.
The molecular formula of an organic compound is C18H36. Name its homologous series.
The molecular formula of a homologue of butane is ______.
Propane and ethane are ______.
Succeeding members of a homologous series differ by ______.
Give the abbreviated formula of the third member of the alcohol.
Give the structure of the second member of the alcohol group.
.
Cyclohexane : Cyclic hydrocarbon : : Isobutylene : _______
Right or wrong sentence.
As one ascends in any homogeneous category, physical properties change in one direction.
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 |
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 |
Which of the following pairs can be the successive members of a homologous series?
Consider the carbon compounds having following molecular formula:
(i) C3H6 (ii) C3H8 (iii) C4H6 (iv) C6H6 (v) C6H12
- State the number of double covalent bonds present in C3H8.
- Write the formula of first member of the homologous series to which the carbon compound C4H6 belongs.
- Which one of the above compounds forms a ring structure of carbon atoms?
- Identify, which of the above compounds, is a member of alkane series.
Name the third homologue of aldehydes.
