- 1(current)
Q. No.Among the following, the compound which contains the fewest tertiary carbons is:
| 1. | \((CH_3)_3C(CH_2)_2CH_3~~~~~~~~~~~~~\) |
| 2. | 4-isobutyl heptane |
| 3. |  |
| 4. |  |
Subtopic: Aliphatic Hydrocarbon- Physical Properties |
From NCERT
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The correct statement(s) among the following is/are:
1. (B) only
2. (C) only
3. (B) and (C) only
4. (A), (B), and (C)
| (A) | The boiling point of 2-methylbutane is greater than n-pentane. |
| (B) | Petrol and lower fractions of petroleum are used for dry cleaning of clothes to remove grease stains. |
| (C) | The melting point of 2,2-Dimethylpropane is greater than n-pentane. |
1. (B) only
2. (C) only
3. (B) and (C) only
4. (A), (B), and (C)
Subtopic: Aliphatic Hydrocarbon- Physical Properties |
From NCERT
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Find out the correct statement:
1. Only B is correct.
2. A and C.
3. B and C.
4. Only A is correct.
| A. | The number of possible theoretical conformations of ethane is 6. |
| B. | In the conformations of ethane, the staggered form has the least torsional strain, and the eclipsed form has the maximum torsional strain. |
| C. | Hückel Rule: The presence of (4n + 2) π electrons in the ring where n is an integer (n = 1, 2, ......). |
2. A and C.
3. B and C.
4. Only A is correct.
Subtopic: Aliphatic Hydrocarbon- Physical Properties | Aromatic Hydrocarbons - Nomenclature, Isomerism & Huckel's Rule |
From NCERT
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The correct order of melting point is:
1. n-Pentane > Neopentane > Isopentane
2. Neopentane > n-Pentane > isopentane
3. Neopentane > Isopentane > n-Pentane
4. Isopentane > Neopentane > n-Pentane
Subtopic: Aliphatic Hydrocarbon- Physical Properties |
From NCERT
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- 1(current)
Q. No.
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