HSC Science (Electronics) इयत्ता ११ वी - Maharashtra State Board Question Bank Solutions for Chemistry

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.

Answer the following question.

The electronic configuration of some element is given below:

1s² 2s² 2p⁶

In which group and period of the periodic table the element is placed?

Answer the following question.

The electronic configuration of some element is given below:

1s²

In which group and period of the periodic table the element is placed?

What is meant by homologous series?

Write the first four members of the homologous series that begins with CH₃CHO. Also, write down their general molecular formula.

Write the first four members of the homologous series that begins with H-C≡C-H. Also, write down their general molecular formula.

Answer the following question.

For s-block and p-block elements show that the number of valence electrons is equal to its group number.

Consider the oxides Li₂O, CO₂, B₂O₃.

Which oxide would you expect to be the most basic?

Consider the oxides Li₂O, CO₂, B₂O₃.

Which oxide would be the most acidic?

Consider the oxides Li₂O, CO₂, B₂O₃.

Give the formula of an amphoteric oxide.

Choose the correct option.

Thallium shows different oxidation state because __________

Identify the group 14 element that best fits the following description.

Nonmetallic element

Identify the group 14 element that best fits the following description.

Form the most acidic oxide

Identify the group 14 element that best fits the following description.

They prefer the +2 oxidation state.

Identify the group 14 element that best fits the following description.

Forms strong π bonds.

Give reason.

Ga³⁺ salts are better reducing agents while Tl³⁺ salts are the better oxidizing agent.

Give reason.

PbCl₄ is less stable than PbCl₂.

Give the formula of a compound in which carbon exhibit an oxidation state of +4

Give the formula of a compound in which carbon exhibit an oxidation state of +2