Incorrect set of quantum numbers from the following is:
1. n=4, l=3, m1 =-3, -2, -1, 0, +1, +2, +3, ms=-1/2
2. n=5, l=2, m1 =-2, -1, +1, +2, ms=+1/2
3. n=4, l=2, m1 = -2, -1, 0, +1, +2, ms=-1/2
4. n=5, l=3, m1 =-3, -2, -1, 0, +1, +2, +3, ms=+1/2
1. n=4, l=3, m1 =-3, -2, -1, 0, +1, +2, +3, ms=-1/2
2. n=5, l=2, m1 =-2, -1, +1, +2, ms=+1/2
3. n=4, l=2, m1 = -2, -1, 0, +1, +2, ms=-1/2
4. n=5, l=3, m1 =-3, -2, -1, 0, +1, +2, +3, ms=+1/2
Subtopic: Quantum Numbers & Schrodinger Wave Equation |
83%
Level 1: 80%+
NEET - 2023
Hints
| Assertion (A): | Ionization enthalpy increases along each series of transition elements from left to right. However, small variations occur. |
| Reason (R): | There is a corresponding increase in nuclear charge which accompanies the filling of electrons in the inner d-orbitals. |
| 1. | (A) is True but (R) is False |
| 2. | (A) is False but (R) is True |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
Subtopic: d-Block Elements- Properties & Uses |
75%
Level 2: 60%+
NEET - 2023
Hints
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the most appropriate answer from the options given below:
| Assertion (A): | Lithium and beryllium unlike their other respective group members form compounds with pronounced ionic character |
| Reason (R): | Lithium and Magnesium have similar properties due to a diagonal relationship |
| 1. | (A)is True but (R) is False |
| 2. | (A) is False but (R) is True |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
Subtopic: Preparations, Properties & Uses of S Block Elements |
Level 3: 35%-60%
NEET - 2023
Hints
For a weak acid HA, the percentage of dissociation is nearly 1% at equilibrium.
If the concentration of acid is 0.1 mol L-1, then the correct option for its Ka at the same temperature will be:
If the concentration of acid is 0.1 mol L-1, then the correct option for its Ka at the same temperature will be:
| 1. | \(1 \times 10^{-4}\) | 2. | \(1 \times 10^{-6} \) |
| 3. | \(1 \times 10^{-5} \) | 4. | \(1 \times 10^{-3} \) |
Subtopic: Ionisation Constant of Acid, Base & Salt |
69%
Level 2: 60%+
NEET - 2023
Hints
What is the molality of a 1 M solution of compound X having density 1.25 g mL⁻¹ and molar mass 85 g mol⁻¹?
1. 0.705 m2. 1.208 m
3. 1.165 m
4. 0.858 m
Subtopic: Concentration Based Problem |
69%
Level 2: 60%+
NEET - 2023
Hints
Consider the given reaction:
\(\mathrm{CH}_3 \mathrm{COCH}_3 \stackrel{\mathrm{dil.~Ba}\left(\mathrm{OH)}_2\right.}{\longrightarrow} \text { " } \mathrm{X} "\)
The functional groups present in the compound "X" are:
1. Ketone and double bond
2. Double bond and aldehyde
3. Alcohol and aldehyde
4. Alcohol and ketone
\(\mathrm{CH}_3 \mathrm{COCH}_3 \stackrel{\mathrm{dil.~Ba}\left(\mathrm{OH)}_2\right.}{\longrightarrow} \text { " } \mathrm{X} "\)
The functional groups present in the compound "X" are:
1. Ketone and double bond
2. Double bond and aldehyde
3. Alcohol and aldehyde
4. Alcohol and ketone
Subtopic: Name Reaction |
Level 3: 35%-60%
NEET - 2023
Hints
The \(E^{\ominus}\) values for
\(\begin{aligned} & \mathrm{Al}^+ / \mathrm{Al}=+0.55 \mathrm{~V} \text { and } \mathrm{Tl}^{+} / \mathrm{Tl}=-0.34 \mathrm{~V} \\ & \mathrm{Al}^{3+} / \mathrm{Al}=-1.66 \mathrm{~V} \text { and } \mathrm{Tl}^{3+} / \mathrm{Tl}=+1.26 \mathrm{~V} \end{aligned} \)
The incorrect statement among the following is:
1. Al is more electropositive than TI.
2. Tl3+ is a good reducing agent than Tl1+.
3. Al+ is unstable in solution.
4. Tl can be easily oxidized to Tl+ as compared to Tl3+.
\(\begin{aligned} & \mathrm{Al}^+ / \mathrm{Al}=+0.55 \mathrm{~V} \text { and } \mathrm{Tl}^{+} / \mathrm{Tl}=-0.34 \mathrm{~V} \\ & \mathrm{Al}^{3+} / \mathrm{Al}=-1.66 \mathrm{~V} \text { and } \mathrm{Tl}^{3+} / \mathrm{Tl}=+1.26 \mathrm{~V} \end{aligned} \)
The incorrect statement among the following is:
1. Al is more electropositive than TI.
2. Tl3+ is a good reducing agent than Tl1+.
3. Al+ is unstable in solution.
4. Tl can be easily oxidized to Tl+ as compared to Tl3+.
Subtopic: Boron Family- Preparations, Properties & Uses |
65%
Level 2: 60%+
NEET - 2023
Hints
The correct order of dipole moments for molecules \(NH_3, H_2S , CH_4 \) and \(HF\) is :
| 1. | \(CH_4>H_2S>NH_3>HF \) |
| 2. | \(H_2S>NH_3>HF>CH_4 \) |
| 3. | \(NH_3>HF>CH_4>H_2~S \) |
| 4. | \(HF>NH_3>H_2S>CH_4\) |
Subtopic: Polarity |
67%
Level 2: 60%+
NEET - 2023
Hints
The molar conductance of an electrolyte increases with dilution according to the equation:
\(\Lambda_{\mathrm{m}}=\Lambda_{\mathrm{m}}^{\circ}-\mathrm{A} \sqrt{\mathrm{c}} \)
Consider the following four statements:
Which of the above statements are correct?
\(\Lambda_{\mathrm{m}}=\Lambda_{\mathrm{m}}^{\circ}-\mathrm{A} \sqrt{\mathrm{c}} \)
Consider the following four statements:
| A: | This equation applies to both strong and weak electrolytes |
| B: | The value of the constant A depends upon the nature of the solvent |
| C: | The value of constant A is the same for both \(BaCl_2\) and \(MgSO_4\) |
| D: | The value of constant A is the same for both \(BaCl_2\) and \(Mg(OH)_2\) |
Which of the above statements are correct?
| 1. | (A) and (B) only | 2. | (A), (B), and (C) only |
| 3. | (B) and (C) only | 4. | (B) and (D) only |
Subtopic: Conductance & Conductivity |
58%
Level 3: 35%-60%
NEET - 2023
Hints
Cheilosis occurs due to the deficiency of:
| 1. | Thiamine | 2. | Nicotinamide |
| 3. | Pyridoxamine | 4. | Riboflavin |
Subtopic: Vitamins, Hormones & Enzymes |
70%
Level 2: 60%+
NEET - 2023
Hints
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