Please answer fast and also give explanation

1.	Please answer fast and also give explanation
Answer» A) 2,2dimethylpropane b)2,2dimethylbutane c)Propene d)2,2dimethylpentane e)Pent-2-ene f)3,3dimethylpropene g)2,3chloropentane h)1,2dimethylheptane I)2methylbutane j)Hept-2-ene k)5,5dimethylhexanaldehyde l)pentan-2-ol

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