GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Same general formula
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Similar chemical properties, i.e. undergo the same reactions
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Varying physical properties, i.e. change in a predictable way
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Same ratio of atoms
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Detailed explanation-1: -A. All members are represented by the same genral formula. B. All members have same chemical properties. C. All members have same physical properties. All members have same functional group. Answer. C is wrong because all members of a homologous series show gradation in physical properties. 27-Jun-2022
Detailed explanation-2: -The members of a homologous series show a similarity in chemical properties. The physical properties in the series of compounds have a regular gradation.
Detailed explanation-3: -However, as the molecular mass increases in a homologous series, a gradation in physical properties is observed. So, they do not have identical physical properties.
Detailed explanation-4: -(a) Change in chemical properties-This is not observed in a homologous series. The chemical properties of all compounds in a homologous series remain the same.
Detailed explanation-5: -A homologous series is a series of compounds with the same general formula, usually varying by a CH2 group. In the given list of compounds methane, ethane and propane belong to the same homologous series of compounds and butene does not.