Which of the following reaction is not a disproportionation reaction?
1.
\(2 \mathrm{~F}_{2(g)}+2 \mathrm{OH}_{(a q)}^{-} \rightarrow 2 \mathrm{~F}_{(a q)}^{-}+\mathrm{OF}_{2(g)}+\mathrm{H}_2 \mathrm{O}_{(l)}\)
2.
\(\mathrm{Cl}_{2(g)}+2 \mathrm{OH}^{-}_{(a q)} \rightarrow \mathrm{ClO}_{(a q)}^{-}+\mathrm{Cl}_{(a q)}^{-}+\mathrm{H}_2 \mathrm{O}_{(l)}\)
3.
\(2 \mathrm{NO}_{2(g)}+2 \mathrm{OH}^{-}_{(\mathrm{aq})} \rightarrow \mathrm{NO}_{2(\mathrm{aq})}^{-}+\mathrm{NO}_{3(\mathrm{aq})}^{-}+\mathrm{H}_2 \mathrm{O}_{(l)}\)
4.
\(2 \mathrm{H}_2 \mathrm{O}_{2(aq)} \rightarrow 2 \mathrm{H}_2 \mathrm{O}_{(l)}+\mathrm{O}_{2(g)}\)
Subtopic: Redox Titration & Type of Redox |
57%
Level 3: 35%-60%
NEET - 2024
Hints
Consider a thin circular ring \((A),\) a circular disc \((B),\) a hollow cylinder \((C)\) and a solid cylinder \((D)\) of the same radii \(R\) and of the same masses.
If \(I_A, I_B, I_C \) and \(I_D\) are their moments of inertia about the axis shown, then choose the correct answer from the options given below:
 |
 |
| \((A)\) | \((B)\) |
 |
 |
| \((C)\) | \((D)\) |
| 1. | \({I}_A={I}_C~ \text{and} ~2{I}_B={I}_D\) |
| 2. | \(I_A=2 I_B~ \text{and} ~2 I_C=I_D \) |
| 3. | \(2 I_A=I_C~ \text{and} ~I_B=2 I_D\) |
| 4. | \({I}_{{A}}={I}_B={I}_C=2 {I}_{{D}}\) |
Subtopic: Moment of Inertia |
66%
Level 2: 60%+
NEET - 2024
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MTP (Medical Termination of Pregnancy) with oral pills is considered relatively safe up to:
| 1. | 7-9 weeks of pregnancy | 2. | 15-18 weeks of pregnancy |
| 3. | 20-24 weeks of pregnancy | 4. | 28-30 weeks of pregnancy |
Subtopic: Medical Termination of Pregnancy |
61%
Level 2: 60%+
NEET - 2024
Hints
Zener diode works:
| 1. | in forward bias only. |
| 2. | in reverse bias only. |
| 3. | as a voltage regulator in forward bias and as a simple pn junction diode in reverse bias. |
| 4. | as a voltage regulator in reverse bias and as a simple pn junction diode in forward bias. |
Subtopic: Applications of PN junction |
56%
Level 3: 35%-60%
NEET - 2024
Hints
Match List-I with List-II:
Choose the correct answer from the options given below:
| List-I (Amine) |
List-II \(\textbf{(pK}_{b} ~\textbf{value}) \) |
||
| A. | Benzenamine | I. | 3.38 |
| B. | Phenylmethanamine | II. | 9.38 |
| C. | Methenamine | III. | 4.70 |
| D. | N-Ethylethanamine | IV. | 3.0 |
| 1. | A-II, B-III, C-I, D-IV | 2. | A-III, B-II, C-I, D-IV |
| 3. | A-II, B-I, C-III, D-IV | 4. | A-I, B-III, C-II, D-IV |
Subtopic: Identification of Primary, Secondary & Tertiary Amines |
69%
Level 2: 60%+
NEET - 2024
Hints
Use of hyper immune horse serum raised against a specific pathogen, given to a recipient is an example of:
1. Natural active immunity
2. Artificial active immunity
3. Natural passive immunity
4. Artificial passive immunity
1. Natural active immunity
2. Artificial active immunity
3. Natural passive immunity
4. Artificial passive immunity
Subtopic: Active & Passive Immunity |
68%
Level 2: 60%+
NEET - 2024
Hints
Match List-I with List-II
Choose the correct answer from the options given below:
| List-I (Material) | List-II (Example) | ||
| (A) | Diamagnet | (I) | Alnico |
| (B) | Paramagnet | (II) | Copper |
| (C) | Soft ferromagnet | (III) | Aluminium |
| (D) | Hard ferromagnet | (IV) | Gadolinium |
| 1. | A-I, B-II, C-III, D-IV | 2. | A-IV, B-III, C-II, D-I |
| 3. | A-III, B-II, C-I, D-IV | 4. | A-II, B-III, C-IV, D-I |
Subtopic: Magnetic Materials |
59%
Level 3: 35%-60%
NEET - 2024
Hints
Isotope of an element contains \(19.23 \%\) more neutrons as compared to protons. The correct element along with its mass number is: (Given Atomic number \(\mathrm{Fe: 26, Co: 27}\) )
| 1. | \(\mathrm {^{56}Fe }\) | 2. | \({ }^{57} \mathrm{Fe}\) |
| 3. | \({ }^{57} \mathrm{Co}\) | 4. | \({ }^{60} \mathrm{Co}\) |
Subtopic: Number of Electron, Proton & Neutron |
57%
Level 3: 35%-60%
NEET - 2024
Hints
Given below are two statements :
In light of the above statements, choose the correct answer from the options given below :
1. Both Statement I and Statement II are True
2. Both Statement I and Statement II are False
3. Statement I is True but Statement II is False
4. Statement I is False but Statement II is True
| Statement I: | When the fitness of one species is significantly lower in the presence of another species, the process is defined as competition. |
| Statement II: | When fungi remain in association with living plants or animals, they are called saprophytes. |
1. Both Statement I and Statement II are True
2. Both Statement I and Statement II are False
3. Statement I is True but Statement II is False
4. Statement I is False but Statement II is True
Subtopic: Population Interactions: Competition | Population Interactions: Commensalism, Protocooperation & Mutualism |
65%
Level 2: 60%+
NEET - 2024
Hints
The ratio of nuclear densities and nuclear volumes of \(^{56}_{26}Fe\) and \(^{4}_{2}He\) are, respectively:
| 1. | \(13:1\) and \(14:1\) | 2. | \(14:1\) and \(1:1\) |
| 3. | \(1:1\) and \(14:1\) | 4. | \(1:1\) and \(13:1\) |
Subtopic: Nucleus |
79%
Level 2: 60%+
NEET - 2024
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