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Q. No.
Statement I:
Sulphuric acid not used during the reaction of alcohols with KI.
Statement II:
H2SO4 is an oxidizing agent, it oxidizes HI produced in the reaction to I2 .
1. Both Statement I and II are true.
2. Statement I is true and statement II is false.
3. Both Statement I and II are false.
4. Statement I is false, Statement II is true.
1. Both Statement I and II are true.
Subtopic: Chemical Properties |
83%
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Consider the following statements,
a.
is more reactive than 
towards SN2 mechanism.
b
is less reactive than 
towards SN2 mechanism.
c.
is less reactive than 
towards SN2 mechanism.
The correct option is-
1. Only statements a and b are true.
2. Only statements c and b are true.
3. Only statement a is true.
4. Only statement b is true.
a.
is more reactive than towards SN2 mechanism.b
is less reactive than towards SN2 mechanism.c.
is less reactive than towards SN2 mechanism.The correct option is-
1. Only statements a and b are true.
2. Only statements c and b are true.
3. Only statement a is true.
4. Only statement b is true.
Subtopic: Mechanism of Reactions |
82%
From NCERT
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| Assertion (A): | CCl4 does not give a white precipitate with AgNO3. |
| Reason (R): | CCl4 is a covalent compound. |
| 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 a True statement but (R) is False. |
| 4. | Both (A) and (R) are False statements. |
Subtopic: Chemical Properties |
73%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | Vinyl chloride doesn't give a substitution reaction. |
| Reason (R): | Carbon chloride bond has double bond character due to resonance. |
| 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. | Both (A) and (R) are false. |
Subtopic: Chemical Properties |
77%
From NCERT
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Given below are two statements:
| Assertion (A): | chlorine is an electron-withdrawing group, yet it is ortho-, para- directing in electrophilic aromatic substitution reactions. |
| Reason (R): | Halogen atom is a ring deactivator. |
| 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: Haloarenes: Directive Influence of Halogen |
54%
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Hints
Match the items in column I with the column II.
| Column I: Structures | Column II: IUPAC name |
a.  |
i. 4-Bromo- 3-methylpent-2-ene |
b.  |
ii. 3-Bromo-2-methylpropene |
c.  |
iii. 1-Bromo-2-methylbut-2-ene |
d.  |
iv. 4-Bromopent-2-ene |
1. a=iii; b=iv; c=i; d=ii
2. a=ii; b=iv; c=i; d=iii
3. a=iv; b=i; c=ii; d=iii
4. a=iv; b=ii, c=iv; d=iii
Subtopic: Introduction and Physical Properties |
81%
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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 p-electrons, the cleavage is difficult because of strong bonding. |
Choose the correct answer from the options given below:
| 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. | Both (A) and (R) are false. |
Subtopic: Chemical Properties |
From NCERT
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Ethylene chloride and ethylidene chloride are isomers. Identify the correct statements.
| a. | Both the compounds form same product on treatment with alcoholic KOH |
| b. | Both the compounds form same product on treatment with aq. NaOH |
| c. | Both the compounds form same product on reduction |
| d. | Both the compounds are optically active |
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Subtopic: Mechanism of Reactions | Chemical Properties |
55%
From NCERT
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Which of the following statements is correct about the kinetics of the above-given reaction?
| (i). | The rate of reaction depends on the concentration of only (b). |
| (ii). | The rate of reaction depends on the concentration of both (a) and (b). |
| (iii). | Molecularity of reaction is one. |
| (iv). | Molecularity of reaction is two. |
Choose the correct option
1. (i, ii)
2. (ii, iii)
3. (iii, iv)
4. (i, iii)
Subtopic: Mechanism of Reactions | Chemical Properties |
71%
From NCERT
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Which of the following statements are correct about the mechanism of this reaction?
(i) A carbocation will be formed as an intermediate in the reaction.
(ii) OH– will attach the substrate (b) from one side and Cl– will leave it simultaneously from other side.
(iii) An unstable intermediate will be formed in which OH– and Cl– will be attached by weak bonds.
(iv) Reaction proceeds through SN1 mechanism
Choose the correct option
1. (i, ii)
2. (ii, iii)
3. (iii, iv)
4. (i, iv)
Subtopic: Mechanism of Reactions | Chemical Properties |
69%
From NCERT
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