Q. No.Which are the correct IUPAC names of the following compound?
a. 5-Butyl-4-isoporpyldecane
b. 5-Ethyl-4-propyldecane
c. 5-sec-Butyl -4- iso-propyldecane
d. 4-(1-Methylethyl) - 5 - (1-methylpropyl)decane
Choose the correct option
1.
(a, b)
2.
(b, c)
3.
(c, d)
4.
(a, c)
Which are the IUPAC names of the following compounds?
a. 5-(2',2'-Dimethylpropyl)decane
b. 4-Butyl-2,2-dimethylnonane
c. 2,2-Dimethyl -4- pentyloctane
d. 5-Neopentyldecane
Choose the correct option
| 1. | (a, b) | 2. | (b, c) |
| 3. | (c, d) | 4. | (a, d) |
For an electrophilic substitution reaction, the presence of a halogen atom in the benzene ring:
| A | Deactivates the ring by inductive effect |
| B | Deactivates the ring by resonance |
| C | Increases the charge density at the ortho and the para positions relative to the meta position by resonance |
| D | Directs the incoming electrophile to the meta position by increasing the charge density relative to the ortho and the para positions |
Choose the correct option:
| 1. | A and B | 2. | B and C |
| 3. | C and D | 4. | A and C |
What is the impact of the nitro substituent on the reactivity and orientation of electrophilic substitution in nitrobenzene?
| (a) | Deactivates the ring by inductive effect. |
| (b) | Activates the ring by inductive effect. |
| (c) | Decreases the charge density at the ortho and para positions of the ring relative to the meta position by resonance. |
| (d) | Increases the charge density at the meta position relative to the ortho and the para positions of the ring by resonance. |
Choose the correct option:
1. a and b
2. b and c
3. c and d
4. a and c
Correct statement among the following is:
| a. | CH3-O-CH2⊕ is more stable than CH3-CH2⊕ |
| b. | (CH3)2CH⊕ is less stable than CH3-CH2-CH2⊕ |
| c. | CH2=CH-CH2⊕ is more stable than CH3-CH2-CH2⊕ |
| d. | CH2 = CH⊕ is more stable than CH3-CH2⊕ |
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Which of the following is/are aromatic structure(s)?
| a. |  |
b. |  |
| c. |  |
d. |  |
| 1. | a and b | 2. | b and c |
| 3. | c and d | 4. | a and c |
Which molecules among the following have a dipole moment?
a. 2,2-Dimethylpropane
b. trans-Pent-2-ene
c. cis-Hex-3-ene
d. 2,2,3,3 - Tetramethylbutane
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Which of the following alkenes undergo ozonolysis to produce a mixture of ketones only?
| a. |  |
b. |  |
| c. |  |
d. |  |
Choose the correct option:
| 1. | (a, b) | 2. | (b, c) |
| 3. | (c, d) | 4. | (a, c) |
Some oxidation reactions of methane are given below. Which of them is/are controlled oxidation reactions?
| a. | CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) |
| b. | CH4(g) + O2(g) → C(s) + 2H2O(l) |
| c. | CH4(g) + O2(g) \(\xrightarrow[]{Mo_{2}O_{3}}\) HCHO + H2O |
| d. | 2CH4(g) + O2(g) \(\xrightarrow[]{Cu/523 \ K/ 100 \ atm}\)2CH3OH |
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Given below are two statements:
| Assertion (A): | Among isomeric pentanes, 2,2-dimethylpropane has the highest boiling point. |
| Reason (R): | Branching does not affect the boiling point. |
| 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. | Both (A) and (R) are False. |
| 4. | (A) is True but (R) is False. |
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