A series \(LCR\) circuit with inductance \(10~\text{H}\), capacitance \(10~\mu \text{F}\), resistance \(50~\Omega\) is connected to an AC source of voltage, \(V=200 \sin (100 t) \text { volt }\). If the resonant frequency of the \(LCR\) circuit is \(\nu_0\) and the frequency of the AC source is \(\nu\), then:
1.
\(\nu=100 ~\text{Hz} ; ~\nu_0=\dfrac{100}{\pi} ~\text{Hz}\)
2.
\(\nu_0=\nu=50~\text{Hz}\)
3.
\(\nu_0=\nu=\dfrac{50}{\pi} ~\text{Hz}\)
4.
\(\nu_{0}=\dfrac{50}{\pi}~ \text{Hz}, \nu=50 ~\text{Hz}\)
Subtopic: Different Types of AC Circuits |
72%
From NCERT
NEET - 2022
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A ball is projected with a velocity of \(10\) ms–1 at an angle of \(60^\circ\) with the vertical direction. Its speed at the highest point of its trajectory will be:
1. \(10\) ms–1
2. zero
3. \(5\sqrt3\) ms–1
4. \(5\) ms–1
1. \(10\) ms–1
2. zero
3. \(5\sqrt3\) ms–1
4. \(5\) ms–1
Subtopic: Projectile Motion |
59%
From NCERT
NEET - 2022
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The pH of the solution containing 50 mL each of 0.10 M sodium acetate and 0.01 M acetic acid is:
[Given pKa of CH3COOH = 4.57]
1. 2.57
2. 5.57
3. 3.57
4. 4.57
[Given pKa of CH3COOH = 4.57]
1. 2.57
2. 5.57
3. 3.57
4. 4.57
Subtopic: pH calculation |
64%
From NCERT
NEET - 2022
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Which one is not the correct mathematical equation for Dalton's Law of partial pressure?
(Here p = total pressure of a gaseous mixture)
(Here p = total pressure of a gaseous mixture)
| 1. | \(p_i=\chi_ip^o_i,\) where \(\chi_i=\) mole fraction of \(i^\text{th}\) gas in a gaseous mixture \(p_{i}^{o}=\) pressure of \(i^\text{th}\) gas in a pure state |
| 2. | \(\mathrm{p}=\mathrm{p}_{1}+\mathrm{p}_{2}+\mathrm{p}_{3} \) |
| 3. | \(\mathrm{p}=\mathrm{n}_{1} \frac{\mathrm{RT}}{\mathrm{V}}+\mathrm{n}_{2} \frac{\mathrm{RT}}{\mathrm{V}}+\mathrm{n}_{3} \frac{\mathrm{RT}}{\mathrm{V}}\) |
| 4. | \(\mathrm{p}_{i}=\chi_{i} \mathrm{p} \), where \(\mathrm{p}_{i}=\) partial pressure of \(i^\text{th}\) gas \(\chi_i=\) mole fraction of \(i^\text{th}\) gas in a gaseous mixture |
Subtopic: Dalton's Law |
58%
From NCERT
NEET - 2022
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The incorrect statement regarding enzymes is:
| 1. | Enzymes are very specific for a particle reaction and substrate. |
| 2. | Enzymes are biocatalysts. |
| 3. | Like chemical catalysts, enzymes reduce the activation energy of bio processes. |
| 4. | Enzymes are polysaccharides. |
Subtopic: Catalyst |
79%
From NCERT
NEET - 2022
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Match List-I with List-II.
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (a) | Li | (i) | absorbent for carbon dioxide |
| (b) | Na | (ii) | electrochemical cells |
| (c) | KOH | (iii) | coolant in fast breeder reactors |
| (d) | Cs | (iv) | photoelectric cell |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iii) | (i) | (iv) |
| 2. | (iv) | (i) | (iii) | (ii) |
| 3. | (iii) | (iv) | (ii) | (i) |
| 4. | (i) | (iii) | (iv) | (ii) |
Subtopic: Preparations, Properties & Uses of S Block Elements |
78%
From NCERT
NEET - 2022
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Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
| I | Primary aliphatic amines react with HNO2 to give unstable diazonium salts. |
| II | Primary aromatic amines react with HNO2 to form diazonium salts which are stable even above 300 K. |
| 1. | I is incorrect but II is correct |
| 2. | Both I and II are correct |
| 3. | Both I and II are incorrect |
| 4. | I is correct but II is incorrect |
Subtopic: Diazonium Salts: Preparation, Properties & Uses |
From NCERT
NEET - 2022
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Which of the following is suitable to synthesize chlorobenzene?
| 1. |  |
| 2. | Benzene, Cl2, anhydrous FeCl3 |
| 3. | Phenol, NaNO2, HCl, CuCl |
| 4. |  |
Subtopic: Haloarenes: Directive Influence of Halogen |
69%
From NCERT
NEET - 2022
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Identify the incorrect statement from the following:
| 1. | Lithium is the strongest reducing agent among the alkali metals. |
| 2. | Alkali metals react with water to form their hydroxides. |
| 3. | The oxidation number of K in KO2 is +4. |
| 4. | Ionisation enthalpy of alkali metals decreases from top to bottom in the group. |
Subtopic: Introduction to Redox and Oxidation Number |
67%
From NCERT
NEET - 2022
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Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
73%
From NCERT
NEET - 2022
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