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Q. No.
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
Level 4: Below 35%
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An Alkene P (\(C_4 H_8\) ) gives optically active product Q which further react with ammonia and gives R. R react with\(NaNO_2 + HCl\) followed by hydrolysis gives S. P, Q, R, S are respectively :
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Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
Level 4: Below 35%
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Hints
Consider the reaction scheme given and choose the correct option:
Find % of N in the final product (P).
1. 38.72
2. 17.34
3. 46.21
4. 20.29
Find % of N in the final product (P).
1. 38.72
2. 17.34
3. 46.21
4. 20.29
Subtopic: Aromatic Hydrocarbons - Reactions & Mechanism |
64%
Level 2: 60%+
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Consider the given compounds:
| Statement I | Compound \(II\) is more stable than Compound \(I\) |
| Statement II | As dihedral angle increases stability decreases |
| 1. | Statement I is incorrect but Statement II is correct |
| 2. | Statement I is correct but Statement II is incorrect |
| 3. | Both statements are correct |
| 4. | Both statements are incorrect |
Subtopic: Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
Level 4: Below 35%
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Hints
What is the correct stability order of alkenes?
(A)
(B)
(C)
(D)
1. A>D>C>B
2. D>A>B>C
3. A>D>B>C
4. B>C>D>A
(A)
(B)
(C)
(D)
1. A>D>C>B
2. D>A>B>C
3. A>D>B>C
4. B>C>D>A
Level 4: Below 35%
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Hints
An alkene on reductive ozonolysis gives methanal as one of the products, it's structure is:
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Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
96%
Level 1: 80%+
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Hints
Given below are two statements :
In the light of the above statements, choose the correct answer from the options given below :
1. Both Statement I and Statement II are false
2. Statement I is false but Statement II is true
3. Both Statement I and Statement II are true
4. Statement I is true but Statement II is false
| Statement I: | On nitration of m-xylene with HNO3, H2SO4 followed by oxidation, 4-nitrobenzene-1, 3-dicarboxylic acid is obtained as the major product. |
| Statement II: | CH3 group is o/p-directing while NO2 group is m-directing group. |
In the light of the above statements, choose the correct answer from the options given below :
1. Both Statement I and Statement II are false
2. Statement I is false but Statement II is true
3. Both Statement I and Statement II are true
4. Statement I is true but Statement II is false
Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
72%
Level 2: 60%+
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Given below are two statements :
In the light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | One mole of propyne reacts with excess of sodium to liberate half a mole of H2 gas. |
| Statement II: | 4g of propyne reacts with NaNH2 to liberate NH3 gas which occupies 224 mL at STP. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 1. | Statement I is correct but Statement II is incorrect. |
| 2. | Both Statement I and Statement II are incorrect. |
| 3. | Statement I is incorrect but Statement II is correct. |
| 4. | Both Statement I and Statement II are correct. |
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
69%
Level 2: 60%+
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Aman has been asked to synthesise the molecule 
. He thought of preparing the molecule using an aldol condensation reaction. He found a few cyclic alkenes in his laboratory. He thought of performing ozonolysis reaction on alkene to produce a dicarbonyl compound followed by aldol reaction to prepare “x”. Predict the suitable alkene that can lead to the formation of “x”.
. He thought of preparing the molecule using an aldol condensation reaction. He found a few cyclic alkenes in his laboratory. He thought of performing ozonolysis reaction on alkene to produce a dicarbonyl compound followed by aldol reaction to prepare “x”. Predict the suitable alkene that can lead to the formation of “x”.
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Subtopic: Aliphatic Hydrocarbon - Methods of Preparation | Alkanes, Alkenes and Alkynes - Chemical Properties |
88%
Level 1: 80%+
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Subtopic: Aliphatic Hydrocarbon - Methods of Preparation | Alkanes, Alkenes and Alkynes - Chemical Properties |
78%
Level 2: 60%+
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