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

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

Write the reaction that explains its formation.

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

Shravani was performing inorganic qualitative analysis of a salt. To an aqueous solution of that salt, she added silver nitrate. When a white precipitate was formed. On adding ammonium hydroxide to this, she obtained a clear solution. Comment on her observations and write the chemical reactions involved.

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

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

Shravani was performing inorganic qualitative analysis of a salt. To an aqueous solution of that salt, she added silver nitrate. When a white precipitate was formed. On adding ammonium hydroxide to this, she obtained a clear solution. Comment on her observations and write the chemical reactions involved.

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

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

Shravani was performing inorganic qualitative analysis of a salt. To an aqueous solution of that salt, she added silver nitrate. When a white precipitate was formed. On adding ammonium hydroxide to this, she obtained a clear solution. Comment on her observations and write the chemical reactions involved.

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

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

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

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

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

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

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

CH₂ = CH − CH₂ − CH₃

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

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

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

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

Shravani was performing inorganic qualitative analysis of a salt. To an aqueous solution of that salt, she added silver nitrate. When a white precipitate was formed. On adding ammonium hydroxide to this, she obtained a clear solution. Comment on her observations and write the chemical reactions involved.

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

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

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

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

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

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

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

CH₂ = CH - CH₂ - CH₃

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

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

Shravani was performing inorganic qualitative analysis of a salt. To an aqueous solution of that salt, she added silver nitrate. When a white precipitate was formed. On adding ammonium hydroxide to this, she obtained a clear solution. Comment on her observations and write the chemical reactions involved.