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Question
The unsaturated hydrocarbons containing a carbon-carbon double bond are called _______.
Options
Alkenes
Alkanes
Alkynes
Alcohol
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Solution
The unsaturated hydrocarbons containing a carbon-carbon double bond are called Alkenes.
RELATED QUESTIONS
What is a homologous series?
Write the molecular formula of the 2nd and 3rd member of the homologous series where the first member is ethyne.
Give the structural formula for 1, 2-dichloroethane
Fill in the following blank with suitable word:
Carbon compounds have usually ... melting points and boiling points because they are ...... in nature.
By how many carbon atoms and hydrogen atoms do any two adjacent homologues differ?
Define a homologous series. Give the name and structural formula of one homologue of the following:
CH3OH
An organic compound having the molecular formula C3H6O can exist in the form of two isomers A and B having different functional groups. The isomer A is a liquid which is used as a solvent for nail polish. The isomer B is also a liquid. An aqueous solution of one of the lower homologues of B is used for preserving biological specimens in the laboratory
(a) What is compound A?
(b) Write the electron-dot structure of A.
(c) What is compound B?
(d) Write the electron-dot structure of B.
(e) Name the lower homologue of compound B which is used in preserving biological specimens.
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.
Give the names of the first four members of the homologous series of
alkynes.
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?
The general formula of Alkane is _________________
The general molecular formula for the homologous series of alkynes is _______.
Which of the following pairs can be the successive members of a homologous series?
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. ______ |
Define 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 C3H6.
- 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.
