The correct representation involving heterolytic fission of among the following is:
1. | |
2. | |
3. | |
4. |
The addition of HCl to an alkene proceeds in two steps. The first step is the attack of H+ ion on the double bond portion. The same can be shown as-
1. | 2. | ||
3. | 4. | All of these are possible |
Match the type of mixture of compounds in Column I with the technique of separation/purification given in column II.
Column I | Column II |
A. Two solids which have different solubilities in a solvent and which do not undergo a reaction when dissolved in it | 1. Steam distillation |
B. Liquid that decomposes at its boiling point | 2. Fractional distillation |
C. Steam volatile liquid | 3. Crystallisation |
D. Two liquids that have boiling points close to each other | 4. Distillation under reduced pressure |
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 |
Match the terms mentioned in Column I with the terms in Column II.
Column I |
Column II |
A. Carbocation |
1. Species that can receive a pair of electrons |
B. Nucleophile |
2. Conjunction of electrons of bond with the empty p-orbital present in adjacent positively charged carbon |
C. Hyperconjugation |
3. hybridised carbon with empty p-orbital |
D. Electrophile |
4. Species that can donate a pair of electrons |
Codes:
Options: | A | B | C | D |
1. | 3 | 4 | 2 | 1 |
2. | 1 | 2 | 3 | 4 |
3. | 1 | 4 | 3 | 2 |
4. | 4 | 1 | 3 | 2 |
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 |
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 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 |
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. |