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Subtopic: Chemical Properties |
From NCERT
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Synthesis of alkyl fluoride cannot be accomplished in good yield by heating alkyl chloride in the presence of:
1. \(Hg_2F_2\)
2. \(CoF_2\)
3. \(BF_3\)
4. \(SbF_3\)
1. \(Hg_2F_2\)
2. \(CoF_2\)
3. \(BF_3\)
4. \(SbF_3\)
Subtopic: Introduction and Physical Properties |
77%
From NCERT
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The incorrect statement regarding CFCs is:
| 1. | These compounds are flammable and highly reactive. |
| 2. | These are non-toxic organic molecules. |
| 3. | They are used in refrigerators and air conditioners. |
| 4. | They are the transporting agents for continuously generating chlorine radicals in stratosphere. |
Subtopic: Dichloromethane, Trichloromethane & Tetrachloromethane |
From NCERT
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What is the substrate (A) in the following reaction?
| 1. | Bromobenzene | 2. | Benzylbromide |
| 3. | Acetophenone | 4. | Phenol |
Subtopic: Chemical Properties |
From NCERT
JEE
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All of the following will increase the rate of the reaction shown below except:
I: Increasing the concentration of tertbutyl alcohol.
II: Increasing the concentration of hydrobromic acid.
III: Increasing the temperature.
I: Increasing the concentration of tertbutyl alcohol.
II: Increasing the concentration of hydrobromic acid.
III: Increasing the temperature.
| 1. | I only | 2. | II only |
| 3. | III only | 4. | II and III only |
Subtopic: Chemical Properties |
From NCERT
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Which of the following statements is true regarding the projections shown below?
| 1. | 'A' and 'B' both represent the same configuration. |
| 2. | Both 'A' and 'B' are optically active. |
| 3. | 'B' alone is optically active. |
| 4. | 'A' alone is optically active. |
Subtopic: Isomerism & Chirality |
From NCERT
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For the compound shown below, which of the following statements are correct?
a. The compound is optically active
b. The compound possesses center of symmetry
c. The compound possesses plane of symmetry
d. The compound possesses axis of symmetry
a. The compound is optically active
b. The compound possesses center of symmetry
c. The compound possesses plane of symmetry
d. The compound possesses axis of symmetry
| 1. | a and b | 2. | a and d |
| 3. | c and d | 4. | b and c |
Subtopic: Isomerism & Chirality |
From NCERT
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Given below are two statements:
| Assertion (A): | Vinyl halides do not undergo nucleophilic substitution easily. |
| Reason (R): |
Even though the intermediate carbocation is stabilized by loosely held \(\pi-\)electrons, the cleavage is difficult because of strong bonding.
|
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Chemical Properties |
From NCERT
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Subtopic: Chemical Properties |
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What is the correct order of reactivity for the following compounds in an \(S_N 1\) reaction?
| 1. | II > I > III | 2. | III > II > I |
| 3. | I > II > III | 4. | I > III > II |
Subtopic: Chemical Properties |
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