Read The Following Sentences Carefully, And Choose The Incorrect One:...
It is the characteristic of a “Homologous Series” is that all the members of a homologous series can be represented by the same general formula. For example, all the members of the alkane series can be represented by the general formula CnH2n + 2.
View all questions of this test
Read The Following Sentences Carefully, And Choose The Incorrect One:...
Explanation:
The incorrect sentence is option B: "All the members of a homologous series can be represented by the different formula."
Homologous Series:
- A homologous series is a group of organic compounds that have the same functional group and similar chemical properties.
- The members of a homologous series have the same general formula and a similar structure.
- Each member of the series differs from the previous one by a CH2 unit.
Correct Statements:
a) Normal-butane has a straight-chain structure whereas iso-butane has a branched-chain structure.
- Normal-butane (also known as n-butane) and iso-butane are both hydrocarbons, but they have different structures.
- Normal-butane has a straight-chain structure, where all four carbon atoms are in a continuous line.
- Iso-butane has a branched-chain structure, where three carbon atoms form a branch off the main chain.
c) Isomerism is possible only with hydrocarbons having 4 or more carbon atoms.
- Isomerism is the phenomenon where two or more compounds have the same molecular formula but different structural arrangements.
- Isomerism can occur in hydrocarbons with any number of carbon atoms, not just 4 or more.
- For example, ethane (C2H6) and methylpropane (C4H10) are isomers.
d) The organic compounds having the same molecular formula but different structures are known as isomers.
- This statement correctly defines isomers.
- Isomers are compounds that have the same molecular formula but different structural arrangements.
- They may differ in the arrangement of atoms, bonding patterns, or spatial orientation.
Incorrect Statement:
b) All the members of a homologous series can be represented by the different formula.
- This statement is incorrect.
- The members of a homologous series have the same general formula, not different formulas.
- For example, the general formula of alkanes (a homologous series) is CnH2n+2, where n represents the number of carbon atoms.
- The specific formula for each member of the series can be obtained by substituting the value of n in the general formula.
In conclusion, the incorrect sentence is option B because all the members of a homologous series have the same general formula, not different formulas.
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.