Alkynes
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CHXI13:HYDROCARBONS

318148 Assertion :
Acetylene is acidic in nature.
Reason :
Acetylene is \({\text{sp}}\) hybridised.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI13:HYDROCARBONS

318149 \({\text{Propyne }}\xrightarrow[\Delta ]{{{\text{Na(l)}}}}{\text{X + 1/2}}{{\text{H}}_{\text{2}}}{\text{,}}\,{\text{X}}\xrightarrow[\Delta ]{{{\text{C}}{{\text{H}}_{\text{3}}}{\text{I}}}}{\text{Y}}\). Which of the following reagents can be used to distinguish \(\mathrm{Y}\) from propyne?

1 \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{AgNO}_{3}\) (or) cold alk \(\mathrm{KMnO}_{4}\)
2 \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{Cu}_{2} \mathrm{Cl}\) (or) \(\mathrm{Br}_{2} / \mathrm{CCl}_{4}\)
3 Cold alk. \(\mathrm{KMnO}_{4}\) (or) \(\mathrm{Br}_{2} / \mathrm{CCl}_{4}\)
4 \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{AgNO}_{3}\) (or) \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{Cu}_{2} \mathrm{Cl}_{2}\)
CHXI13:HYDROCARBONS

318150 Which one of the following compounds will react with methylmagnesium iodide?

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}_{2}\)
3 \(\mathrm{CH}_{3} \mathrm{C} \equiv \mathrm{CCH}_{2} \mathrm{CH}_{3}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{C} \equiv \mathrm{CH}\)
CHXI13:HYDROCARBONS

318151 Arrange the following in order of decreasing
basicity.
A. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{MgBr}\)
B. \(\mathrm{HC} \equiv \mathrm{CMgBr}\)
C. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OMgBr}\)

1 \(\mathrm{A}>\mathrm{C}>\mathrm{B}\)
2 A \(>\) B \(>\) C
3 \(\mathrm{C}>\mathrm{B}>\mathrm{A}\)
4 \(\mathrm{B}>\mathrm{A}>\mathrm{C}\)
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CHXI13:HYDROCARBONS

318148 Assertion :
Acetylene is acidic in nature.
Reason :
Acetylene is \({\text{sp}}\) hybridised.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI13:HYDROCARBONS

318149 \({\text{Propyne }}\xrightarrow[\Delta ]{{{\text{Na(l)}}}}{\text{X + 1/2}}{{\text{H}}_{\text{2}}}{\text{,}}\,{\text{X}}\xrightarrow[\Delta ]{{{\text{C}}{{\text{H}}_{\text{3}}}{\text{I}}}}{\text{Y}}\). Which of the following reagents can be used to distinguish \(\mathrm{Y}\) from propyne?

1 \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{AgNO}_{3}\) (or) cold alk \(\mathrm{KMnO}_{4}\)
2 \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{Cu}_{2} \mathrm{Cl}\) (or) \(\mathrm{Br}_{2} / \mathrm{CCl}_{4}\)
3 Cold alk. \(\mathrm{KMnO}_{4}\) (or) \(\mathrm{Br}_{2} / \mathrm{CCl}_{4}\)
4 \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{AgNO}_{3}\) (or) \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{Cu}_{2} \mathrm{Cl}_{2}\)
CHXI13:HYDROCARBONS

318150 Which one of the following compounds will react with methylmagnesium iodide?

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}_{2}\)
3 \(\mathrm{CH}_{3} \mathrm{C} \equiv \mathrm{CCH}_{2} \mathrm{CH}_{3}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{C} \equiv \mathrm{CH}\)
CHXI13:HYDROCARBONS

318151 Arrange the following in order of decreasing
basicity.
A. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{MgBr}\)
B. \(\mathrm{HC} \equiv \mathrm{CMgBr}\)
C. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OMgBr}\)

1 \(\mathrm{A}>\mathrm{C}>\mathrm{B}\)
2 A \(>\) B \(>\) C
3 \(\mathrm{C}>\mathrm{B}>\mathrm{A}\)
4 \(\mathrm{B}>\mathrm{A}>\mathrm{C}\)
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CHXI13:HYDROCARBONS

318148 Assertion :
Acetylene is acidic in nature.
Reason :
Acetylene is \({\text{sp}}\) hybridised.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI13:HYDROCARBONS

318149 \({\text{Propyne }}\xrightarrow[\Delta ]{{{\text{Na(l)}}}}{\text{X + 1/2}}{{\text{H}}_{\text{2}}}{\text{,}}\,{\text{X}}\xrightarrow[\Delta ]{{{\text{C}}{{\text{H}}_{\text{3}}}{\text{I}}}}{\text{Y}}\). Which of the following reagents can be used to distinguish \(\mathrm{Y}\) from propyne?

1 \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{AgNO}_{3}\) (or) cold alk \(\mathrm{KMnO}_{4}\)
2 \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{Cu}_{2} \mathrm{Cl}\) (or) \(\mathrm{Br}_{2} / \mathrm{CCl}_{4}\)
3 Cold alk. \(\mathrm{KMnO}_{4}\) (or) \(\mathrm{Br}_{2} / \mathrm{CCl}_{4}\)
4 \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{AgNO}_{3}\) (or) \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{Cu}_{2} \mathrm{Cl}_{2}\)
CHXI13:HYDROCARBONS

318150 Which one of the following compounds will react with methylmagnesium iodide?

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}_{2}\)
3 \(\mathrm{CH}_{3} \mathrm{C} \equiv \mathrm{CCH}_{2} \mathrm{CH}_{3}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{C} \equiv \mathrm{CH}\)
CHXI13:HYDROCARBONS

318151 Arrange the following in order of decreasing
basicity.
A. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{MgBr}\)
B. \(\mathrm{HC} \equiv \mathrm{CMgBr}\)
C. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OMgBr}\)

1 \(\mathrm{A}>\mathrm{C}>\mathrm{B}\)
2 A \(>\) B \(>\) C
3 \(\mathrm{C}>\mathrm{B}>\mathrm{A}\)
4 \(\mathrm{B}>\mathrm{A}>\mathrm{C}\)
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CHXI13:HYDROCARBONS

318148 Assertion :
Acetylene is acidic in nature.
Reason :
Acetylene is \({\text{sp}}\) hybridised.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI13:HYDROCARBONS

318149 \({\text{Propyne }}\xrightarrow[\Delta ]{{{\text{Na(l)}}}}{\text{X + 1/2}}{{\text{H}}_{\text{2}}}{\text{,}}\,{\text{X}}\xrightarrow[\Delta ]{{{\text{C}}{{\text{H}}_{\text{3}}}{\text{I}}}}{\text{Y}}\). Which of the following reagents can be used to distinguish \(\mathrm{Y}\) from propyne?

1 \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{AgNO}_{3}\) (or) cold alk \(\mathrm{KMnO}_{4}\)
2 \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{Cu}_{2} \mathrm{Cl}\) (or) \(\mathrm{Br}_{2} / \mathrm{CCl}_{4}\)
3 Cold alk. \(\mathrm{KMnO}_{4}\) (or) \(\mathrm{Br}_{2} / \mathrm{CCl}_{4}\)
4 \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{AgNO}_{3}\) (or) \(\mathrm{NH}_{4} \mathrm{OH}+\mathrm{Cu}_{2} \mathrm{Cl}_{2}\)
CHXI13:HYDROCARBONS

318150 Which one of the following compounds will react with methylmagnesium iodide?

1 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}\)
2 \(\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}_{2}\)
3 \(\mathrm{CH}_{3} \mathrm{C} \equiv \mathrm{CCH}_{2} \mathrm{CH}_{3}\)
4 \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{C} \equiv \mathrm{CH}\)
CHXI13:HYDROCARBONS

318151 Arrange the following in order of decreasing
basicity.
A. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{MgBr}\)
B. \(\mathrm{HC} \equiv \mathrm{CMgBr}\)
C. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OMgBr}\)

1 \(\mathrm{A}>\mathrm{C}>\mathrm{B}\)
2 A \(>\) B \(>\) C
3 \(\mathrm{C}>\mathrm{B}>\mathrm{A}\)
4 \(\mathrm{B}>\mathrm{A}>\mathrm{C}\)
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