NEET (UG) 2023 question paper

1. A.
   $669^\circ C$
2. B.
   $3295^\circ C$
3. C.
   $3097\,K$
4. D.
   $223\,K$

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1. A.
   Capacitive reactance decreases
2. B.
   Displacement current increases
3. C.
   Displacement current decreases
4. D.
   Capacitive reactance remains constant

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1. A.
   Both Statement I and Statement II are correct
2. B.
   Both Statement I and Statement II are incorrect
3. C.
   Statement I is correct but Statement II is incorrect
4. D.
   Statement I is incorrect but Statement II is correct

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1. A.
   Red
2. B.
   Green
3. C.
   Orange
4. D.
   Yellow

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1. A.
   $200\,\Omega$
2. B.
   $50\,\Omega$
3. C.
   $100\,\Omega$
4. D.
   $400\,\Omega$

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1. A.
   $8\,mC$
2. B.
   $6\,mC$
3. C.
   $4\,mC$
4. D.
   $2\,mC$

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1. A.
   $\frac{v}{3}$
2. B.
   $\frac{2v}{3}$
3. C.
   $\frac{4v}{3}$
4. D.
   $\frac{3v}{4}$

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1. A.
   $0.2\,A$ from $B$ to $A$ through $E$
2. B.
   $0.5\,A$ from $A$ to $B$ through $E$
3. C.
   $\frac{5}{9}\,A$ from $A$ to $B$ through $E$
4. D.
   $1.5\,A$ from $B$ to $A$ through $E$

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1. A.
   $15.9\,rad/s$
2. B.
   $15.9\,kHz$
3. C.
   $1.59\,rad/s$
4. D.
   $1.59\,kHz$

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1. A.
   $\sin^{-1}\left(\frac{t_2}{t_1}\right)$
2. B.
   $\sin^{-1}\left(\frac{10t_2}{t_1}\right)$
3. C.
   $\sin^{-1}\left(\frac{t_1}{10t_2}\right)$
4. D.
   $\sin^{-1}\left(\frac{10t_1}{t_2}\right)$

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1. A.
   $\sqrt{V}$
2. B.
   $\frac{1}{V}$
3. C.
   $\frac{1}{\sqrt{V}}$
4. D.
   $V^2$

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1. A.
   $2800\,m$
2. B.
   $2000\,m$
3. C.
   $1000\,m$
4. D.
   $3000\,m$

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1. A.
   A centre-tapped transformer
2. B.
   p-n junction diodes
3. C.
   Capacitor
4. D.
   Load resistance

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1. A.
   $30.16 \times 10^{-4}\,J$
2. B.
   $5.06 \times 10^{-4}\,J$
3. C.
   $3.01 \times 10^{-4}\,J$
4. D.
   $50.1 \times 10^{-4}\,J$

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1. A.
   $1:2$
2. B.
   $2:1$
3. C.
   $1:3$
4. D.
   $3:1$

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1. A.
   $2W/A$
2. B.
   $W/A$
3. C.
   $W/2A$
4. D.
   Zero

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1. A.
   $1.2\%$
2. B.
   $1.3\%$
3. C.
   $1.6\%$
4. D.
   $1.4\%$

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1. A.
   Both Statement I and Statement II are true.
2. B.
   Both Statement I and Statement II are false.
3. C.
   Statement I is true but Statement II is false.
4. D.
   Statement I is false but Statement II is true.

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1. A.
   Along the radius, away from centre
2. B.
   Along the radius towards the centre
3. C.
   Along the tangent to its position
4. D.
   Along the axis of rotation

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1. A.
   $1.6 \times 10^{-9}\,T$
2. B.
   $1.6 \times 10^{-8}\,T$
3. C.
   $1.6 \times 10^{-7}\,T$
4. D.
   $1.6 \times 10^{-6}\,T$

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1. A.
   $2\,\mu F$
2. B.
   $3\,\mu F$
3. C.
   $6\,\mu F$
4. D.
   $9\,\mu F$

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1. A.
   Along eastward
2. B.
   Along northward
3. C.
   Along north-east
4. D.
   Along south-west

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1. A.
   Huygen's principle
2. B.
   Bernoulli's principle
3. C.
   The principle of parallel axes
4. D.
   The principle of perpendicular axes

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1. A.
   $4\,\mu J$
2. B.
   $4\,mJ$
3. C.
   $8\,mJ$
4. D.
   $8\,\mu J$

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1. A.
   $-\frac{8Gm}{R}$
2. B.
   $-\frac{12Gm}{R}$
3. C.
   $-\frac{16Gm}{R}$
4. D.
   $-\frac{20Gm}{R}$

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1. A.
   Cs only
2. B.
   Both Na and K
3. C.
   K only
4. D.
   Na only

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1. A.
   $0.27\,A$
2. B.
   $2.7\,A$
3. C.
   $3.7\,A$
4. D.
   $0.37\,A$

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1. A.
   Zero
2. B.
   Positive
3. C.
   Infinity
4. D.
   Negative

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1. A.
   $2U$
2. B.
   $4U$
3. C.
   $8U$
4. D.
   $16U$

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1. A.
   $20$ minutes
2. B.
   $40$ minutes
3. C.
   $60$ minutes
4. D.
   $80$ minutes

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1. A.
   $27^\circ C$
2. B.
   $15^\circ C$
3. C.
   $100^\circ C$
4. D.
   $200^\circ C$

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1. A.
   The number of flux lines entering the surface must be equal to the number of flux lines leaving it
2. B.
   The magnitude of electric field on the surface is constant
3. C.
   All the charges must necessarily be inside the surface
4. D.
   The electric field inside the surface is necessarily uniform

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1. A.
   $2\lambda$
2. B.
   $4\lambda$
3. C.
   $9\lambda$
4. D.
   $16\lambda$

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1. A.
   Instrumental errors
2. B.
   Personal errors
3. C.
   Least count errors
4. D.
   Random errors

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1. A.
   $3:5$
2. B.
   $5:3$
3. C.
   $2:5$
4. D.
   $5:2$

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1. A.
   Zero
2. B.
   $\frac{f}{4}$
3. C.
   $\frac{f}{2}$
4. D.
   Infinite

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1. A.
   $40\,cm$
2. B.
   $-40\,cm$
3. C.
   $-100\,cm$
4. D.
   $-50\,cm$

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1. A.
   $0.53\,\text{\AA}$
2. B.
   $1.06\,\text{\AA}$
3. C.
   $1.59\,\text{\AA}$
4. D.
   $4.77\,\text{\AA}$

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1. A.
   $10$
2. B.
   $100$
3. C.
   $1$
4. D.
   $1000$

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1. A.
   $\left(\frac{3}{8}\right)qK$
2. B.
   $\left(\frac{5}{8}\right)qK$
3. C.
   $\left(\frac{8}{5}\right)qK$
4. D.
   $\left(\frac{8}{3}\right)qK$

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1. A.
   $1.2\,m\,s^{-2}$
2. B.
   $150\,m\,s^{-2}$
3. C.
   $1.5\,m\,s^{-2}$
4. D.
   $50\,m\,s^{-2}$

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1. A.
   | A | B | Y | |---|---|---| | 0 | 0 | 1 | | 0 | 1 | 1 | | 1 | 0 | 1 | | 1 | 1 | 0 |
2. B.
   | A | B | Y | |---|---|---| | 0 | 0 | 0 | | 0 | 1 | 1 | | 1 | 0 | 1 | | 1 | 1 | 1 |
3. C.
   | A | B | Y | |---|---|---| | 0 | 0 | 1 | | 0 | 1 | 0 | | 1 | 0 | 1 | | 1 | 1 | 0 |
4. D.
   | A | B | Y | |---|---|---| | 0 | 0 | 0 | | 0 | 1 | 0 | | 1 | 0 | 0 | | 1 | 1 | 1 |

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1. A.
   $\frac{\pi^2}{8}\,m\,s^{-2}$
2. B.
   $-\frac{\pi^2}{8}\,m\,s^{-2}$
3. C.
   $\frac{\pi^2}{16}\,m\,s^{-2}$
4. D.
   $-\frac{\pi^2}{16}\,m\,s^{-2}$

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1. A.
   $27\,cm$
2. B.
   $24\,cm$
3. C.
   $28\,cm$
4. D.
   $30\,cm$

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1. A.
   $\frac{\mu_0 i}{4R}$ pointed into the page
2. B.
   $\frac{\mu_0 i}{4R}$ pointed away from the page
3. C.
   $\frac{\mu_0 i}{4R}\left[1 - \frac{2}{\pi}\right]$ pointed away from page
4. D.
   $\frac{\mu_0 i}{4R}\left[1 - \frac{2}{\pi}\right]$ pointed into the page

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1. A.
   $10\sqrt{2}\ \Omega$
2. B.
   $15\ \Omega$
3. C.
   $5\sqrt{5}\ \Omega$
4. D.
   $25\ \Omega$

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1. A.
   $T$
2. B.
   $T^2$
3. C.
   $T^3$
4. D.
   $\sqrt{T}$

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1. A.
   $3\,IL$
2. B.
   $\sqrt{5}\,IL$
3. C.
   $5\,IL$
4. D.
   $\sqrt{3}\,IL$

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1. A.
   $3 \times 10^{-4}\ ^\circ\text{C}^{-1}$
2. B.
   $3 \times 10^{-3}\ ^\circ\text{C}^{-1}$
3. C.
   $3 \times 10^{-2}\ ^\circ\text{C}^{-1}$
4. D.
   $3 \times 10^{-1}\ ^\circ\text{C}^{-1}$

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1. A.
   $56\ \text{m}$
2. B.
   $60\ \text{m}$
3. C.
   $64\ \text{m}$
4. D.
   $68\ \text{m}$

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1. A.
   Benzylic halide
2. B.
   Aryl halide
3. C.
   Allylic halide
4. D.
   Vinylic halide

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1. A.
   B, C, D, E are correct
2. B.
   A, B, C, D are correct
3. C.
   A, B, C, E are correct
4. D.
   A, C, D, E are correct

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1. A.
   $H_2C=CH-CH=CH_2$
2. B.
   $H_2C=C(Cl)-CH=CH_2$
3. C.
   $H_2C=CH-C\equiv CH$
4. D.
   $H_2C=C(CH_3)-CH=CH_2$

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1. A.
   (structure 1)
2. B.
   (structure 2)
3. C.
   (structure 3)
4. D.
   (structure 4)

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1. A.
   $\sigma 1s < \sigma^*1s < \sigma 2s < \sigma^*2s < (\pi 2p_x = \pi 2p_y) < \sigma 2p_z < (\pi^*2p_x = \pi^*2p_y) < \sigma^*2p_z$
2. B.
   $\sigma 1s < \sigma^*1s < \sigma 2s < \sigma^*2s < \sigma 2p_z < (\pi 2p_x = \pi 2p_y) < (\pi^*2p_x = \pi^*2p_y) < \sigma^*2p_z$
3. C.
   $\sigma 1s < \sigma^*1s < \sigma 2s < \sigma^*2s < \sigma 2p_z < \sigma^*2p_z < (\pi 2p_x = \pi 2p_y) < (\pi^*2p_x = \pi^*2p_y)$
4. D.
   $\sigma 1s < \sigma^*1s < \sigma 2s < \sigma^*2s < (\pi 2p_x = \pi 2p_y) < (\pi^*2p_x = \pi^*2p_y) < \sigma 2p_z < \sigma^*2p_z$

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1. A.
   Both A and R are true and R is the correct explanation of A
2. B.
   Both A and R are true but R is NOT the correct explanation of A
3. C.
   A is true but R is false
4. D.
   A is false but R is true

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1. A.
   Potassium trioxalatoaluminate (III)
2. B.
   Diamminechloridonitrito-N-platinum (II)
3. C.
   Pentaamminecarbonatocobalt (III) chloride
4. D.
   Triamminetriaquachromium (III) chloride

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1. A.
   Both A and R are true and R is the correct explanation of A
2. B.
   Both A and R are true and R is NOT the correct explanation of A
3. C.
   A is true but R is false
4. D.
   A is false but R is true

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1. A.
   (structure 1)
2. B.
   (structure 2)
3. C.
   (structure 3)
4. D.
   (structure 4)

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1. A.
   O
2. B.
   F
3. C.
   N
4. D.
   Na

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1. A.
   16
2. B.
   32
3. C.
   30
4. D.
   18

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1. A.
   $TlCl_3 > TlCl$
2. B.
   $InI_3 > InI$
3. C.
   $AlCl > AlCl_3$
4. D.
   $TlI > TlI_3$

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1. A.
   $CH_3CONH_2 \xrightarrow{Br_2/KOH}$ Product
2. B.
   $CH_3CN \xrightarrow[(ii) H_3O^+]{(i) LiAlH_4}$ Product
3. C.
   $CH_3NC \xrightarrow[(ii) H_3O^+]{(i) LiAlH_4}$ Product
4. D.
   $CH_3CONH_2 \xrightarrow[(ii) H_3O^+]{(i) LiAlH_4}$ Product

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1. A.
   $NH_3$
2. B.
   $H_2O$
3. C.
   $BF_3$
4. D.
   $OH^-$

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1. A.
   (structure 1)
2. B.
   (structure 2)
3. C.
   (structure 3)
4. D.
   (structure 4)

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1. A.
   (structure 1)
2. B.
   (structure 2)
3. C.
   (structure 3)
4. D.
   (structure 4)

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1. A.
   11, 2, 0
2. B.
   12, 3, 0
3. C.
   11, 3, 1
4. D.
   12, 2, 1

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1. A.
   Oxidation of sulphur dioxide into sulphur trioxide in the presence of oxides of nitrogen
2. B.
   Hydrolysis of sugar catalysed by $H^+$ ions
3. C.
   Decomposition of ozone in presence of nitrogen monoxide
4. D.
   Combination between dinitrogen and dihydrogen to form ammonia in the presence of finely divided iron

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1. A.
   Decrease by a factor of nine
2. B.
   Increase by a factor of six
3. C.
   Increase by a factor of nine
4. D.
   Increase by a factor of three

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1. A.
   (graph 1)
2. B.
   (graph 2)
3. C.
   (graph 3)
4. D.
   (graph 4)

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1. A.
   1.12 g
2. B.
   1.76 g
3. C.
   2.64 g
4. D.
   1.32 g

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1. A.
   $n_m = 2l + 1$
2. B.
   $n_m = 2(l + 1)$
3. C.
   $n_m = 2l^2 + 1$
4. D.
   $n_m = l + 2$

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1. A.
   $1.34\ cm^{-1}$
2. B.
   $3.28\ cm^{-1}$
3. C.
   $1.26\ cm^{-1}$
4. D.
   $3.34\ cm^{-1}$

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1. A.
   Both Statement I and Statement II are true
2. B.
   Both Statement I and Statement II are false
3. C.
   Statement I is true but Statement II is false
4. D.
   Statement I is false but Statement II is true

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1. A.
   Both A and R are true and R is the correct explanation of A
2. B.
   Both A and R are true and R is NOT the correct explanation of A
3. C.
   A is true but R is false
4. D.
   A is false but R is true

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1. A.
   First ionisation enthalpy
2. B.
   Enthalpy of atomization
3. C.
   Hydration energy
4. D.
   Second ionisation enthalpy

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1. A.
   A-II, B-IV, C-I, D-III
2. B.
   A-IV, B-I, C-II, D-III
3. C.
   A-III, B-I, C-IV, D-II
4. D.
   A-III, B-IV, C-I, D-II

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1. A.
   5
2. B.
   4
3. C.
   3
4. D.
   2

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1. A.
   3
2. B.
   2
3. C.
   4
4. D.
   1

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1. A.
   B, C, D, E only
2. B.
   B, D only
3. C.
   D, E only
4. D.
   A, B, C only

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1. A.
   Both A and R are true and R is the correct explanation of A
2. B.
   Both A and R are true and R is NOT the correct explanation of A
3. C.
   A is true but R is false
4. D.
   A is false but R is true