How many 2^o Hydrogen atoms are present in th | vedclass

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(C) $2^o$ Hydrogen atom is a hydrogen atom attached to a $2^o$ carbon atom (a carbon atom bonded to two other carbon atoms).In the given structure of

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$7$

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(C) $2^o$ Hydrogen atom is a hydrogen atom attached to a $2^o$ carbon atom (a carbon atom bonded to two other carbon atoms).In the given structure of $1$-chloronaphthalene,there are $10$ carbon atoms in total.The two bridgehead carbons are $3^o$ carbons (bonded to three other carbons) and have no hydrogen atoms attached.The carbon atom attached to the chlorine atom is a $2^o$ carbon but it has no hydrogen attached.The remaining $7$ carbon atoms are all $2^o$ carbons,and each of these is bonded to one hydrogen atom.Therefore,there are $7$ hydrogen atoms attached to $2^o$ carbon atoms.Thus,the total number of $2^o$ hydrogen atoms is $7$.

Column $-I$	Column $-II$
$(i)$ Aromatic	$(a)$ Tropolone
$(ii)$ Branched acyclic	$(b)$ Neopentane
$(iii)$ Alicyclic	$(c)$ Cyclohexene
$(iv)$ Non-benzenoid	$(d)$ Aniline

How many $2^o$ Hydrogen atoms are present in the given following compound?

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The study of organic compounds is done separately from other compounds even at present because:

Match column $-I$ and column $-II$ with the correct relation:

Column $-I$ Column $-II$

$(i)$ Aromatic $(a)$ Tropolone

$(ii)$ Branched acyclic $(b)$ Neopentane

$(iii)$ Alicyclic $(c)$ Cyclohexene

$(iv)$ Non-benzenoid $(d)$ Aniline

Alicyclic compounds are

The number of alicyclic compounds from the following is: Cyclohexene,Anisole,Pyridine,Tetrahydrofuran,Biphenyl.

The compound which contains all the four $1^o, 2^o, 3^o$ and $4^o$ carbon atoms is

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