The length of a magnetized iron bar is \(L\) and its magnetic moment is \(M.\) When this bar is bent to form a semicircle its magnetic moment is:
1. \(M\)
2. \(\large\frac{M\pi}{2}\)
3. \(\large\frac{M}{2\pi}\)
4. \(\large\frac{2M}{\pi}\)
Subtopic: Bar Magnet |
71%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
Name the hormone(s) not secreted by placenta.
A. Estrogens
B. Progestogens
C. Relaxin and Inhibin
D. hCG
E. hPL
Choose the correct answer from the options given below:
1. D and E only
2. C only
3. B only
4. A and C only
A. Estrogens
B. Progestogens
C. Relaxin and Inhibin
D. hCG
E. hPL
Choose the correct answer from the options given below:
1. D and E only
2. C only
3. B only
4. A and C only
Subtopic: Embryonic Development till Gastrulation |
67%
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
A rod of length \(L\) rotates with a small uniform angular velocity \(\omega\) about its perpendicular bisector. A uniform magnetic field \(\mathrm B\) exists parallel to the axis of rotation. The potential difference between the centre of the rod and an end is:
1. \(\large\frac{B\omega L^2}{8}\)
2. \(\large\frac{B\omega L^2}{2}\)
3. \(\large\frac{B\omega L^2}{4}\)
4. zero
1. \(\large\frac{B\omega L^2}{8}\)
2. \(\large\frac{B\omega L^2}{2}\)
3. \(\large\frac{B\omega L^2}{4}\)
4. zero
Subtopic: Motional emf |
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
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. \(2 \mathrm{H}_2 \mathrm{O}_{2(aq)} \rightarrow 2 \mathrm{H}_2 \mathrm{O}_{(l)}+\mathrm{O}_{2(g)}\)
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 |
61%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
Consider a thin circular ring (A), a circular disc (B), a hollow Cylinder (C) and a solid cylinder (D) of the same radius R and of same mass:
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:
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. \({I}_{{A}}={I}_B={I}_C=2 {I}_{{D}}\)
 |
 |
| (A) | (B) |
 |
 |
| (C) | (D) |
Choose the correct answer from the options given below:
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 |
56%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
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
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 |
55%
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
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
Please attempt this question first.
Hints
Please attempt this question first.
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 |
67%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
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
Please attempt this question first.
Hints
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 |
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 |
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
© 2024 GoodEd Technologies Pvt. Ltd.