Subtopic: Chemical Properties |
68%
Level 2: 60%+
NEET - 2024
Hints
The pair of lanthanoid ions, consisting of elements which are diamagnetic, is:
| 1. | Ce3+ and Eu2+ | 2. | Gd3+ and Eu3+ |
| 3. | Pm3+ and Sm3+ | 4. | Ce4+ and Yb2+ |
Subtopic: f-Block Elements- Properties & Uses |
66%
Level 2: 60%+
NEET - 2024
Hints
Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from I to VI.
Choose the correct answer from the options given below
| A. | Al3+ | B. | Cu2+ |
| C. | Ba2+ | D. | Co2+ |
| E. | Mg2+ | ||
| 1. | B, C, A, D, E | 2. | E, C, D, B, A |
| 3. | E, A, B, C, D | 4. | B, A, D, C, E |
Subtopic: Detection of Cations |
Level 3: 35%-60%
NEET - 2024
Hints
The rate of a reaction quadruples when temperature changes from 27°C to 57°C. Calculate the energy of activation.
Given R = 8.314 J K–1 mol–1, log 4 = 0.6021
Given R = 8.314 J K–1 mol–1, log 4 = 0.6021
| 1. | 380.4 kJ/mol | 2. | 3.80 kJ/mol |
| 3. | 3804 kJ/mol | 4. | 38.04 kJ/mol |
Subtopic: Arrhenius Equation |
57%
Level 3: 35%-60%
NEET - 2024
Hints
During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of Fe2+ ion?
1. Concentrated sulphuric acid
2. Dilute nitric acid
3. Dilute sulphuric acid
4. Dilute hydrochloric acid
1. Concentrated sulphuric acid
2. Dilute nitric acid
3. Dilute sulphuric acid
4. Dilute hydrochloric acid
Subtopic: Preparation of the Organic and Inorganic compounds |
53%
Level 3: 35%-60%
NEET - 2024
Hints
Identify the major product C formed in the following reaction sequence:
| 1. | Butylamine | 2. | Butanamide |
| 3. | \(\alpha-\) Bromobutanoic acid | 4. | Propylamine |
Subtopic: Amines - Preparation & Properties |
62%
Level 2: 60%+
NEET - 2024
Hints
Mass in grams of copper deposited by passing 9.6487 A current through a voltmeter containing copper sulphate for 100 seconds is:
(Given : Molar mass of Cu: \(63~ g mol^{-1}\); 1F = 96487 C)
(Given : Molar mass of Cu: \(63~ g mol^{-1}\); 1F = 96487 C)
| 1. | 0.315 g | 2. | 31.5 g |
| 3. | 0.0315 g | 4. | 3.15 g |
Subtopic: Faraday’s Law of Electrolysis |
68%
Level 2: 60%+
NEET - 2024
Hints
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
Level 3: 35%-60%
NEET - 2024
Hints
The plot of osmotic pressure \((\pi)\) vs concentration \((mol L^{-1})\) for a solution gives a straight line with slope 25.73 L bar mol-1. The temperature at which osmotic pressure measurement is done is: \((\text {Use} \left.\mathrm{R}=0.083 \mathrm{~L} \mathrm{bar} \mathrm{mol}^{-1} \mathrm{~K}^{-1}\right)\)
| 1. | 310°C | 2. | 25.73°C |
| 3. | 12.05 °C | 4. | 37°C |
Subtopic: Osmosis & Osmotic Pressure |
51%
Level 3: 35%-60%
NEET - 2024
Hints
How many interhalogens among those given below have a square pyramidal structure?
\(\mathrm{ClF}_3, \mathrm{IF}_7, \mathrm{BrF}_5, \mathrm{BrF}_3, \mathrm{I}_2 \mathrm{Cl}_6, \mathrm{IF}_5, \mathrm{CIF}, \mathrm{ClF}_5\)
\(\mathrm{ClF}_3, \mathrm{IF}_7, \mathrm{BrF}_5, \mathrm{BrF}_3, \mathrm{I}_2 \mathrm{Cl}_6, \mathrm{IF}_5, \mathrm{CIF}, \mathrm{ClF}_5\)
| 1. | 3 | 2. | 5 |
| 3. | 2 | 4. | 4 |
Subtopic: Group 17 - Preparation, Properties & Uses |
61%
Level 2: 60%+
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