HSC Science (Computer Science) 11th Standard - Maharashtra State Board Question Bank Solutions for Chemistry

Define : Least count

Read the following reaction and answer the questions given below.

\[\begin{array}{cc}
\phantom{..............................}\ce{CH3}\\
\phantom{...........................}|\\
\ce{CH3 - C = CH2 + HBr ->[benzoyl][peroxide] CH3 - CH - CH2Br}\\
|\phantom{.....................................}\\
\ce{CH3}\phantom{..................................}
\end{array}\]

1. Write IUPAC name of the product.
2. State the rule that governs formation of this product.

Identify the α - carbons in the following species and give the total number of

\[\ce{CH3 -CH2 -\overset{⊕}{C}H -CH2 -CH3}\]

Identify primary, secondary, tertiary and quaternary carbon in the following compounds.

\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\ce{CH3}\phantom{..............}
\end{array}\]

Identify primary, secondary, tertiary and quaternary carbon in the following compound.

\[\begin{array}{cc}
\ce{CH3}\phantom{..................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\phantom{..}\ce{CH3}\phantom{..............}\\
\end{array}\]

Define Least count.

Define: Least count

Identify primary, secondary, tertiary, and quaternary carbons in the following compound.

\[\begin{array}{cc}
\ce{CH3\phantom{.................}}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3 CH3\phantom{.............}}
\end{array}\]

Define: Least count

Define : Least count

Define: Least count

Identify primary, secondary, tertiary and quaternary carbon in the following compound.

\[\begin{array}{cc}
\ce{CH3}\phantom{..................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\ce{CH3}\phantom{..............}
\end{array}\]

Identify primary, secondary, tertiary and quaternary carbon in the following compound.

\[\begin{array}{cc}
\ce{CH3}\phantom{..................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\phantom{.}\ce{CH3}\phantom{..............}
\end{array}\]

Identify primary, secondary, tertiary and quaternary carbon in the following compound.

\begin{array}{cc}
\ce{CH3}\phantom{..................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\ce{CH3}\phantom{..............}
\end{array}

Define Least count

Define Least count. 

Identify the α - carbons in the following species and give the total number of α-hydrogen in each.

\[\ce{CH3 - CH2 - \overset{\oplus}{C}H - CH2 - CH3}\]

Identify the α-carbons in the following species and give the total number of α-hydrogen.

\[\ce{CH2 = CH - CH2 - CH3}\]

Identify primary, secondary, tertiary and quaternary carbon in the following compound:

\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\phantom{.}\ce{CH3}\phantom{..............}\\
\end{array}\]

Which of the following will exhibit geometical isomerism?