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Q. No.Given below are two statements :
Statement I :
The boiling point of three isomeric pentanes follows the order
\(\text { n-pentane }>\text { isopentane }>\text { neopentane }\)
Statement II :
When branching increases, the molecule attains the shape of sphere. This results in smaller surface area for contact, due to which the intermolecular forces between the spherical molecules are weak, thereby lowering the boiling point.
In the light of the above statements, choose the most appropriate answer from the option given below:
1. Both Statement I and Statement II are incorrect.
2. Statement I is correct but Statement II is incorrect.
3. Statement I is incorrect but Statement II is correct.
4. Both Statement I and Statement II are correct.
\(\text { n-pentane }>\text { isopentane }>\text { neopentane }\)
Subtopic: Aliphatic Hydrocarbon- Physical Properties |
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Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
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Match List -I with List -II:
| List-I (Reactions) |
List-II (Products) |
||
| A. |  |
I. | \(\left(\mathrm{CH}_3\right)_2 \mathrm{C}=\mathrm{O}+\mathrm{CO}_2+\mathrm{H}_2 \mathrm{O}\) |
| B. |  |
II. |  |
| C. |  |
III. |  |
| D. |  |
IV. | \(\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{OH}\) |
1. A-II, B-IV, C-III, D-I
2. A-II, B-III, C-IV, D-I
3. A-II, B-III, C-I, D-IV
4. A-IV, B-I, C-III, D-II
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
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Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
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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:
1. Statement I is correct but Statement II is incorrect
2. Statement I is incorrect but statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
| Statement I : | Propene on treatment with diborane gives an addition product with the formula \(((CH_3)_2-CH)_3 -B\) |
| Statement II : | Oxidation of \(((CH_3)_2-CH)_3 -B\) with hydrogen peroxide in presence of \(NaOH\) gives propan-2-ol. |
1. Statement I is correct but Statement II is incorrect
2. Statement I is incorrect but statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
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Baeyer's reagent is:
1. acidic potassium permanganate solution
2. acidic potassium dichromate solution
3. cold, dilute, aqueous solution of potassium permanganate
4. hot, concentrated solution of potassium permanganate
1. acidic potassium permanganate solution
2. acidic potassium dichromate solution
3. cold, dilute, aqueous solution of potassium permanganate
4. hot, concentrated solution of potassium permanganate
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
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Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
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Arrange the following compounds in increasing order of their solubilities in chloroform:
\(\mathrm{NaCl, CH_3 OH, cyclohexane, CH_3CN}\)
1. \(\mathrm{NaCl< CH_3CN<CH_3 OH<Cyclohexane}\)
2. \(\mathrm{CH_3 OH<CH_3CN<NaCl<Cyclohexane}\)
3. \(\mathrm{NaCl< CH_3 OH<CH_3CN<Cyclohexane}\)
4. \(\mathrm{Cyclohexane< CH_3CN<CH_3 OH<NaCl}\)
\(\mathrm{NaCl, CH_3 OH, cyclohexane, CH_3CN}\)
1. \(\mathrm{NaCl< CH_3CN<CH_3 OH<Cyclohexane}\)
2. \(\mathrm{CH_3 OH<CH_3CN<NaCl<Cyclohexane}\)
3. \(\mathrm{NaCl< CH_3 OH<CH_3CN<Cyclohexane}\)
4. \(\mathrm{Cyclohexane< CH_3CN<CH_3 OH<NaCl}\)
Subtopic: Aliphatic Hydrocarbon- Physical Properties |
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The following reaction method
is not suitable for the preparation of the corresponding haloarene products, due to high reactivity of halogen, when X is:
1. F
2. I
3. Cl
4. Br
is not suitable for the preparation of the corresponding haloarene products, due to high reactivity of halogen, when X is:
1. F
2. I
3. Cl
4. Br
Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
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The alkane that can be oxidized to the corresponding alcohol by \(\mathrm{KMnO}_4\) as per the equation
is, when:
1. \( \mathrm{R}_1=\mathrm{H} ; \mathrm{R}_2=\mathrm{H} ; \mathrm{R}_3=\mathrm{H} \)
2. \( \mathrm{R}_1=\mathrm{CH}_3 ; \mathrm{R}_2=\mathrm{CH}_3 ; \mathrm{R}_3=\mathrm{CH}_3 \)
3. \( \mathrm{R}_1=\mathrm{CH}_3 ; \mathrm{R}_2=\mathrm{H} ; \mathrm{R}_3=\mathrm{H}\)
4. \(\mathrm{R}_1=\mathrm{CH}_3 ; \mathrm{R}_2=\mathrm{CH}_3 ; \mathrm{R}_3=\mathrm{H}\)
is, when:
1. \( \mathrm{R}_1=\mathrm{H} ; \mathrm{R}_2=\mathrm{H} ; \mathrm{R}_3=\mathrm{H} \)
2. \( \mathrm{R}_1=\mathrm{CH}_3 ; \mathrm{R}_2=\mathrm{CH}_3 ; \mathrm{R}_3=\mathrm{CH}_3 \)
3. \( \mathrm{R}_1=\mathrm{CH}_3 ; \mathrm{R}_2=\mathrm{H} ; \mathrm{R}_3=\mathrm{H}\)
4. \(\mathrm{R}_1=\mathrm{CH}_3 ; \mathrm{R}_2=\mathrm{CH}_3 ; \mathrm{R}_3=\mathrm{H}\)
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
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