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प्रश्न
What is the difference between two consecutive homologues:
(1) in terms of molecular mass?
(2) in terms of number and kind of atoms per molecule?
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उत्तर
(1) 14 u is the difference between two consecutive homologues in terms of molecular mass.
(2) The two consecutive homologues differ by 1 carbon atom and 2 hydrogen atoms in their molecular formulae.
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संबंधित प्रश्न
Write the next homologue of the following: C2H4
Write the name and formula of the 2nd member of homologous series having general formula CnH2n + 2.
Write the molecular formula of first two members of homologous series having functional group −Br.
The following vegetables are kept in a basket :
Potato, Tomato, Radish, Brinjal, Carrot, Bottle-gourd
Which two of these vegetables correctly represent the homologous structures?
(A) Carrot and Tomato
(B) Potato and Brinjal
(C) Radish and Carrot
(D) Radish and Bottle-gourd
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.
Give the molecular formula of one homologue of the following:
C3H6
Write the names and formulae for the first three members of the homologous series for chloroalkanes.
Succeeding members of a homologous series differ by ______.
Give the dot diagram of the first member of the alcohol.
Give the structure of the second member of the alcohol group.
Give the names and the structural formula of the first three members of the homologous series of alkanes.
.
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
Distinguish between homologous organs and analogous organs. In which category would you place wings of a bird and wings of a bat? Justify your answer giving a suitable reason.
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?
As one ascends in any homologous series, physical properties change gradually.
Which of the following pairs can be the successive members of a homologous series?
A carbon compound ‘A’ having melting point 156K and boiling point 351K, with molecular formula C2H6O is soluble in water in all proportions.
- Identify ‘A’ and draw its electron dot structure.
- Give the molecular formulae of any two homologues of ‘A’.
Define Homologous series.
