HSC Science (Electronics) 11th Standard - Maharashtra State Board Question Bank Solutions

List the characteristic physical properties of the gases.

Give the reactions supporting the basic nature of ammonia.

Write the balanced chemical reaction for the preparation of ethane from Ethyl magnesium iodide.

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

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

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

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

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

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

A compound is prepared from the mineral colemanite by boiling it with a solution of sodium carbonate. It is a white crystalline solid and is used for inorganic qualitative analysis.

Write the reaction that explains its formation.

Give the test that is used to detect borate radicals is qualitative analysis.

Ammonia is a good complexing agent. Explain.

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

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

Define: Least count

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