Q.

A statement of Assertion is given by the corresponding statement of Reason. Of these statements, mark the correct answer.


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a

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

b

Both Assertion and Reason are true and Reason is not the correct explanation of Assertion

c

Assertion is true but Reason is false

d

Assertion is false but Reason is trueAssertion – n-butane and iso-butane are examples of structural isomers. Reason – Isomerism is possible only with hydrocarbons having 4 or more carbon atoms. 

answer is B.

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Detailed Solution

The organic compounds with the same molecular formula but different chemical and physical properties are called isomers and the phenomenon is termed isomerism. Some compounds have the same molecular formula but different structures. Such compounds are called structural isomers and the phenomenon is called structural isomerism. For a hydrocarbon to form a branched compound, a minimum of four carbon atoms are required. For example; in the case of a compound with three carbon atoms, the structure will be CH3-CH2-CH3 removing one of the carbon atoms and placing it on the second carbon, the parent chain will be the same. An example of isomers is,
Question Image     Question Imagen-butane  iso-butane
 
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