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: PN junction |
52%
From NCERT
NEET - 2024
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Match List-I with List-II
Choose the correct answer from the options given below:
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
| List-I (Amine) |
List-II \(\textbf{(pK}_{\beta} ~\textbf{value}) \) |
||
| 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 |
64%
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NEET - 2024
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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 |
65%
NEET - 2024
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Match List-I with List-II
Choose the correct answer from the options given below:
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
| List-I (Material) | List-II (Example) | ||
| A. | Diamagnet | I. | Alnico |
| B. | Paramagnet | II. | Copper |
| C. | Soft ferromagnet | III. | Aluminium |
| D. | Hard ferromagnet | IV. | Gadolinium |
Choose the correct answer from the options given below:
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 |
53%
From NCERT
NEET - 2024
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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. \({ }^{60} \mathrm{Co}\)
(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 |
54%
From NCERT
NEET - 2024
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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 |
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NEET - 2024
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The ratio of nuclear densities and nuclear volumes of \(^{56}_{26}\mathrm{Fe}\) and \(^{4}_{2}\mathrm{He}\) are, respectively:
1. \(13:1\) and \(14:1\)
2. \(14:1\) and \(1:1\)
3. \(1:1\) and \(14:1\)
4. \(1:1\) and \(13:1\)
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 |
75%
From NCERT
NEET - 2024
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For an adiabatic process, the factor which remains constant is: (all the notations have their usual meaning)
1. \(P^{\gamma-1} {~T}^\gamma \)
2. \(T V^{1-\gamma} \)
3. \(V^{\gamma-1} {~T}^ \gamma \)
4. \(P^{1-\gamma} ~{T}^\gamma\)
1. \(P^{\gamma-1} {~T}^\gamma \)
2. \(T V^{1-\gamma} \)
3. \(V^{\gamma-1} {~T}^ \gamma \)
4. \(P^{1-\gamma} ~{T}^\gamma\)
Subtopic: Cyclic Process |
68%
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NEET - 2024
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For a smoothly running analog clock, the ratio of the number of rotations made in a day by the hour hand to the second hand, respectively, is:
1. \(24 :1\)
2. \(1:720\)
3. \(1:60\)
4. \(2:5\)
1. \(24 :1\)
2. \(1:720\)
3. \(1:60\)
4. \(2:5\)
Subtopic: Circular Motion |
62%
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NEET - 2024
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Which of the following is not a complex polysaccharide?
1. Inulin
2. Chitin
3. Glucosamine
4. N-acetyl galactosamine
1. Inulin
2. Chitin
3. Glucosamine
4. N-acetyl galactosamine
Subtopic: Carbohydrates: Cellulose, Chitin, Inulin & Agar |
57%
From NCERT
NEET - 2024
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