Subtopic: PN junction |
Level 3: 35%-60%
NEET - 2024
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A dielectric slab of dielectric constant \(3\) having the same area of cross-section as that of a parallel plate capacitor but of thickness \({\frac{3}{4}}^{\text{th}}\) of the separation of the plates is inserted into the capacitor. The ratio of potential difference across the plates without dielectric to that with dielectric is:
| 1. | \(1:2\) | 2. | \(2:3\) |
| 3. | \(3:2\) | 4. | \(2:1\) |
Subtopic: Dielectrics in Capacitors |
57%
Level 3: 35%-60%
NEET - 2024
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A dipole is placed in an electric field as shown. In which direction will it move?
| 1. | towards the left as its potential energy will decrease. |
| 2. | towards the right as its potential energy will increase. |
| 3. | towards the left as its potential energy will increase. |
| 4. | towards the right as its potential energy will decrease. |
Subtopic: Electric Dipole |
Level 3: 35%-60%
NEET - 2021
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Which of the following meta-directing substituents is the most deactivating in aromatic substitution?
| 1. | –SO3H | 2. | –COOH |
| 3. | –NO2 | 4. | –C≡N |
Subtopic: Directive Effect of functional grp |
68%
Level 2: 60%+
AIPMT - 2013
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Among the following compounds the one that is most reactive towards electrophilic nitration is:
1. Benzoic acid
2. Nitrobenzene
3. Toluene
4. Benzene
Subtopic: Reagents |
69%
Level 2: 60%+
AIPMT - 2012
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Subtopic: Pollination & Outbreeding Devices |
Level 3: 35%-60%
NEET - 2013
Sorry!! currently, the explanation for the question is not provided. If you need further help, please email at support@neetprep.com with subject: Explanation Missing for Question Id: 358441
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Male gametophyte with least number of cells is present in:
1. Pteris
2. Funaria
3. Lilium
4. Pinus
1. Pteris
2. Funaria
3. Lilium
4. Pinus
Subtopic: Stamen: Male Gametophyte |
Level 3: 35%-60%
AIPMT - 2014
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One of the legal methods of birth control is:
| 1. | by abstaining from coitus from day 10 to 17 of the menstrual cycle |
| 2. | by having coitus at the time of daybreak |
| 3. | by premature ejaculation during coitus |
| 4. | abortion by taking an appropriate medicine |
Subtopic: Contraception: Natural Methods |
Level 3: 35%-60%
AIPMT - 2013
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Which of the following statements are true for spermatogenesis but do not hold true for Oogenesis?
Choose the most appropriate answer from the option given below:
| (a) | It results in the formation of haploid gametes. |
| (b) | Differentiation of gamete occurs after the completion of meiosis. |
| (c) | Meiosis occurs continuously in a mitotically dividing stem cell population. |
| (d) | It is controlled by the Luteinising hormone (LH) and Follicle Stimulating Hormone (FSH) secreted by the anterior pituitary. |
| (e) | It is initiated at puberty. |
| 1. | (b), (c), and (e) only | 2. | (c) and (e) only |
| 3. | (b) and (c) only | 4. | (b), (d) and (e) only |
Subtopic: Seminiferous Tubules & Spermatogenesis | oogenesis |
Level 3: 35%-60%
NEET - 2022
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The amnion of mammalian embryo is derived from?
| 1. | ectoderm and mesoderm | 2. | endoderm and mesoderm |
| 3. | mesoderm and trophoblast | 4. | ectoderm and endoderm |
Subtopic: Embryonic Development till Gastrulation |
Level 3: 35%-60%
NEET - 2018
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