CBSE Class 12 Office Communication Question Paper 2019 with Answer Key (February 16)

CBSE Class 12 Office Communication Question Paper 2019 with Answer Key Set 4 is available for download. The exam was conducted by the Central Board of Secondary Education on February 16, 2019 in the Morning Session 10:30 AM to 1:30 PM. The medium of paper was English & Hindi.The question paper comprised a total of 20 questions divided among 5 sections.

CBSE Class 12 Office Communication Question Paper 2019 with Answer Key (February 16)

CBSE Class 12 Office Communication Question Paper 2019 PDF	CBSE Class 12 Office Communication Answer Key 2019 PDF
Download PDF	Available Soon

CBSE Class 12 Previous Year Question Papers

CBSE Question Paper 2020	CBSE Question Paper 2019	CBSE Question Paper 2018
CBSE Question Paper 2017	CBSE Question Paper 2016	CBSE Question Paper 2015

CBSE CLASS XII Questions

1.
Give structures of A, B and C: Aniline $\xrightarrow{Br_2/H_2O}$ A $\xrightarrow{NaNO_2+HCl, 0-5^\circ C}$ B $\xrightarrow{H_3PO_2+H_2O}$ C

View Solution

2.
Write mechanism of acid dehydration of ethanol to ethene.

View Solution

3.
Why are magnesium blocks attached to iron water pipelines?

View Solution

4.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

View Solution

5.
For decomposition of $H_2O_2$ by $I^-$: Step I: $H_2O_2 + I^- \rightarrow H_2O + IO^-$ (slow). Step II: $H_2O_2 + IO^- \rightarrow H_2O + I^- + O_2$ (fast). (a) Write rate law. (b) Determine order w.r.t. $H_2O_2$ and $I^-$ and overall order. (c) Molecularity of Step II.

View Solution

6.
Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?

View Solution

CBSE Class 12 Office Communication Question Paper 2019 with Answer Key (February 16)

CBSE Class 12 Office Communication Question Paper 2019 with Answer Key (February 16)

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.
Give structures of A, B and C: Aniline $\xrightarrow{Br_2/H_2O}$ A $\xrightarrow{NaNO_2+HCl, 0-5^\circ C}$ B $\xrightarrow{H_3PO_2+H_2O}$ C

2.
Write mechanism of acid dehydration of ethanol to ethene.

3.
Why are magnesium blocks attached to iron water pipelines?

4.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

5.
For decomposition of $H_2O_2$ by $I^-$: Step I: $H_2O_2 + I^- \rightarrow H_2O + IO^-$ (slow). Step II: $H_2O_2 + IO^- \rightarrow H_2O + I^- + O_2$ (fast). (a) Write rate law. (b) Determine order w.r.t. $H_2O_2$ and $I^-$ and overall order. (c) Molecularity of Step II.

6.
Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?

Comments

SUBSCRIBE TO OUR NEWS LETTER

CBSE Class 12 Office Communication Question Paper 2019 with Answer Key (February 16)

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.Give structures of A, B and C: Aniline $\xrightarrow{Br_2/H_2O}$ A $\xrightarrow{NaNO_2+HCl, 0-5^\circ C}$ B $\xrightarrow{H_3PO_2+H_2O}$ C

2.Write mechanism of acid dehydration of ethanol to ethene.

3.Why are magnesium blocks attached to iron water pipelines?

4.Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

5.For decomposition of $H_2O_2$ by $I^-$: Step I: $H_2O_2 + I^- \rightarrow H_2O + IO^-$ (slow). Step II: $H_2O_2 + IO^- \rightarrow H_2O + I^- + O_2$ (fast). (a) Write rate law. (b) Determine order w.r.t. $H_2O_2$ and $I^-$ and overall order. (c) Molecularity of Step II.

6.Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Give structures of A, B and C: Aniline $\xrightarrow{Br_2/H_2O}$ A $\xrightarrow{NaNO_2+HCl, 0-5^\circ C}$ B $\xrightarrow{H_3PO_2+H_2O}$ C

2.
Write mechanism of acid dehydration of ethanol to ethene.

3.
Why are magnesium blocks attached to iron water pipelines?

4.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

5.
For decomposition of $H_2O_2$ by $I^-$: Step I: $H_2O_2 + I^- \rightarrow H_2O + IO^-$ (slow). Step II: $H_2O_2 + IO^- \rightarrow H_2O + I^- + O_2$ (fast). (a) Write rate law. (b) Determine order w.r.t. $H_2O_2$ and $I^-$ and overall order. (c) Molecularity of Step II.

6.
Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?