Subtopic: Aldehydes & Ketones: Preparation & Properties | Carboxylic Acids: Preparation & Properties |
65%
Level 2: 60%+
NEET - 2023
Hints
Select the correct statements from the following:
Choose the correct answer from the options given below:
| A: | Atoms of all elements are composed of two fundamental particles. |
| B: | The mass of the electron is \(9.10939 \times 10^{-31} \mathrm{~kg} \text {. }\) |
| C: | All the isotopes of a given element show the same chemical properties. |
| D: | Protons and electrons are collectively known as nucleons. |
| E: | Dalton's atomic theory regarded the atom as an ultimate particle of matter. |
| 1. | B, C and E only | 2. | A, B and C only |
| 3. | C, D and E only | 4. | A and E only |
Subtopic: Introduction |
76%
Level 2: 60%+
NEET - 2023
Hints
The stability of Cu2+ is greater than that of Cu+ salts in an aqueous solution due to:
1. Second ionisation enthalpy
2. First ionisation enthalpy
3. Enthalpy of atomization
4. Hydration energy
1. Second ionisation enthalpy
2. First ionisation enthalpy
3. Enthalpy of atomization
4. Hydration energy
Subtopic: d-Block Elements- Properties & Uses |
73%
Level 2: 60%+
NEET - 2023
Hints
The relation between \(n_m \) (\(n_m \) = number of permissible values of magnetic quantum number (ml) for a given value of azimuthal quantum number (l) is:
| 1. | \(n_m = l+2\) | 2. | \(l = {\dfrac{n_m -1} 2}\) |
| 3. | \(l= 2n_m +1\) | 4. | \(n_m = 2l^2 + 1 \) |
Subtopic: Shell & Subshell |
68%
Level 2: 60%+
NEET - 2023
Hints
Homoleptic complex from the following complexes is:
1. Triamminetriaquachromium (III)
2. Potassium trioxalatoaluminate (III)
3. Diamminechloridonitrito-N-platinum (II)
4. Pentaamminecarbonatocobalt (III) chloride
1. Triamminetriaquachromium (III)
2. Potassium trioxalatoaluminate (III)
3. Diamminechloridonitrito-N-platinum (II)
4. Pentaamminecarbonatocobalt (III) chloride
Subtopic: Introduction, Classification and Nomenclature |
82%
Level 1: 80%+
NEET - 2023
Hints
Among the given reactions, which one does not result in the formation of a primary amine as the product?
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
Subtopic: Amines - Preparation & Properties |
77%
Level 2: 60%+
NEET - 2023
Hints
On heating, some solid substances change from solid to vapour state without passing through liquid state. The technique used for the purification of such solid substances based on the above principle is known as:
| 1. | Sublimation | 2. | Distillation |
| 3. | Chromatography | 4. | Crystallization |
Subtopic: Qualitative Analysis of Organic Compounds |
82%
Level 1: 80%+
NEET - 2024
Hints
Amongst the given option which of the following molecules/ion acts as a Lewis acid?
1. \(\text{OH}^- \)
2. \(\text{NH}_3 \)
3. \(\text H_2 \text O \)
4. \(\text{BF}_3 \)
1. \(\text{OH}^- \)
2. \(\text{NH}_3 \)
3. \(\text H_2 \text O \)
4. \(\text{BF}_3 \)
Subtopic: Acids & Bases - Definitions & Classification |
77%
Level 2: 60%+
NEET - 2023
Hints
Match the allotropes of carbon given in List I with the respective characteristics given in List II:
| List-I | List-II | ||
| A. | Coke | I. | Carbon atoms are sp3 hybridised. |
| B. | Diamond | II. | Used as a dry lubricant |
| C. | Fullerene | III. | Used as a reducing agent |
| D. | Graphite | IV. | Cage like molecules |
Choose the correct answer from the options given below:
| Options: | (A) | (B) | (C) | (D) |
| 1. | III | IV | I | II |
| 2. | II | IV | I | III |
| 3. | IV | I | II | III |
| 4. | III | I | IV | II |
Subtopic: Compounds of Carbon, Preparations, Properties & Uses |
75%
Level 2: 60%+
NEET - 2023
Hints
The element expected to form the largest ion to achieve the nearest noble gas configuration is:
| 1. | Sodium(Na) | 2. | Oxygen(O) |
| 3. | Fluorine(F) | 4. | Nitrogen(N) |
Subtopic: Atomic Size |
56%
Level 3: 35%-60%
NEET - 2023
Hints
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