Assertion (A): | Simple distillation can help in separating a mixture of propan-1-ol (boiling point 97 ° C ) and propanone (boiling point 56 ° C ). |
Reason (R): | Liquids with a difference of more than 20 ° C in their boiling points can be separated by simple distillation. |
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. |
Assertion (A): | Energy of resonance hybrid is equal to the average of energies of all canonical forms. |
Reason (R): | Resonance hybrid cannot be presented by a single structure. |
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. |
Assertion (A): | Pent-1-ene and pent-2-ene are position isomers. |
Reason (R): | Position isomers differ in the position of a functional group or a substituent. |
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. |
Given below are two statements:
Assertion (A): | All the carbon atoms in H2C = C = CH2 are sp2-hybridised. |
Reason (R): | In this molecule, all the carbon atoms are attached to each other by double bonds. |
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. |
Assertion (A): | Sulphur present in an organic compound can be estimated quantitatively by the Carius method. |
Reason (R): | Sulphur is separated easily from other atoms in the molecule and gets precipitated as a light yellow solid. |
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. |
Given below are two statements:
Assertion (A): | Components of a mixture of red and blue inks can be separated by distributing the components between stationary and mobile phases in paper chromatography. |
Reason (R): | The colored components of inks migrate at different rates because paper selectively retains different components according to the difference in their partition between the two phases. |
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. |
Arrange the following carbanions in order of their decreasing stability:
A. \(\mathrm{H}_3 \mathrm{C}-\mathrm{C} \equiv \mathrm{C}^{-}\)
B. \(\mathrm{H}-\mathrm{C} \equiv \mathrm{C}^{-}\)
C. \(\mathrm{H}_3 \mathrm{C}-\mathrm{{C}H_2^-}\)
1. | A > B > C | 2. | B > A > C |
3. | C > B > A | 4. | C > A > B |
Match the ions given in Column I with their nature-given in Column II.
Column I |
Column II |
A. |
1. Stable due to resonance |
B. |
2. Destabilised due to inductive effect |
C. |
3. Stabilised by hyperconjugation. |
D. |
4. A secondary carbocation |
Codes:
Options: | A | B | C | D |
1. | 1,2 | 2 | 2 | 3,4 |
2. | 1 | 2,4 | 3 | 4 |
3. | 1 | 4 | 3 | 2 |
4. | 4 | 1 | 3 | 2 |
Match the intermediates given in Column I with their probable structure in Column II.
Column I |
Column II |
A. Free radical |
1. Trigonal planar |
B. Carbocation |
2. Pyramidal |
C. Carbanion |
3. Linear |
Codes:
Options: | A | B | C |
1. | 1 | 1 | 2 |
2. | 1 | 2 | 3 |
3. | 3 | 1 | 2 |
4. | 2 | 1 | 3 |
Match Column I with Column II.
Column I | Column II |
A. Dumas method | 1. AgNO3 |
B. Kjeldahl’s method | 2. Silica gel |
C. Carius method | 3. Nitrogen gel |
D. Chromatography | 4. Ammonium sulphate |
Codes:
A | B | C | D | |
1. | 3 | 4 | 1 | 2 |
2. | 1 | 2 | 3 | 4 |
3. | 1 | 4 | 3 | 2 |
4. | 4 | 1 | 3 | 2 |