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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 next homologue of the following: C4H6
Write the molecular formula of the 2nd and 3rd member of the homologous series where the first member is ethyne.
Fill in the following blank with suitable word:
Ethene and ethyne are examples of ..... hydrocarbons.
Define a homologous series. Give the name and structural formula of one homologue of the following:
CH3OH
Study the different conclusions drawn by students of a class on the basis of observations of preserved/available specimens of plants and animals.
I. Potato and sweet potato are analogous organs in plants.
II. Wings of insects and wings of birds are homologous organs in animals.
III. Wings of insects and wings of bats are analogous organs in animals.
IV. Thorns of citrus and tendrils of cucurbita are analogous organs in plants.
The correct conclusions are:
(A) I, and II
(B) II and IV
(C) I and III
(D) III and IV
Write names of first four homologous series of alcohols.
Write the name and formula of the fourth member of the following homologous series:
Alkyne
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 |
Name the following organic compound:
The first homologue whose general formula is CnH2n.
Study and complete the following table:
| Homologous series | Alkane | Alkyne |
| General formula | CnH2n+2 | 1. ______ |
| IUPAC name | 2. ______ | Ethyne |
| Common name | Marsh gas | 3. ______ |
