Science (English Medium) इयत्ता ११ - CBSE Question Bank Solutions for Chemistry

List gases which are responsible for greenhouse effect.

Statues and monuments in India are affected by acid rain. How?

What would have happened if the greenhouse gases were totally missing in the earth’s atmosphere? Discuss.

Write IUPAC name of the following compound: 

CH₂ = CH - C ≡ C - CH₃

Write IUPAC name of the following compound:

Write IUPAC name of the following compound:

Write IUPAC name of the following compound:

Write IUPAC name of the following compound:

\[\begin{array}{cc}
\ce{CH3(CH2)4 CH(CH2)3 CH3}\\
|\phantom{..}\\
\phantom{..............}\ce{CH2 - CH(CH3)2}
\end{array}\]

Write IUPAC name of the following compound:

\[\begin{array}{cc}
\ce{CH3 - CH = CH - CH2 - CH = CH - CH - CH2 - CH = CH2}\\
\phantom{.................}|\\\phantom{.....................}\ce{C2H5}\end{array}\]

How can you explain higher stability of BCl₃ as compared to TlCl₃?

Suggest reasons why the B–F bond lengths in BF₃ (130 pm) and `"BF"_4^(-)` (143 pm) differ.

Aluminium trifluoride is insoluble in anhydrous HF but dissolves on the addition of NaF. Aluminium trifluoride precipitates out of the resulting solution when gaseous BF₃ is bubbled through. Give reasons.

What happens when BF₃ is reacted with ammonia?

How would you explain the lower atomic radius of Ga as compared to Al?

In some of the reactions thallium resembles aluminium, whereas in others it resembles with group I metals. Support this statement by giving some evidences.

What do you understand by inert pair effect?

Write a balanced equation for Al + NaOH → ?

Write a balanced equation for B₂H₆ + NH₃ → ?

Explain why is sodium less reactive than potassium?