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JEE Main 8 April 2024 Shift 2 Question Paper with Answers

8 April 2024 · April session · 90 questions

The complete JEE Main 8 April 2024 Shift 2 paper — all 90 questions with the correct answer for each, tagged to the chapter it tests. Free to read, no account needed.

Physics
30
Chemistry
30
Mathematics
30

Physics — JEE Main 8 April 2024 Shift 2

Q1·PhysicsSingle correct
A block is simply released from the top of an inclined plane as shown in the figure above. The maximum compression in the spring when the block hits the spring is:
  1. (A)6\sqrt{6}6​ m
  2. (B)222 m
  3. (C)111 m
  4. (D)5\sqrt{5}5​ m

Correct answer: (B)

Step-by-step solution →
Q2·PhysicsSingle correct
In a hypothetical fission reaction 92X236→ 56Y141+ 36Z92+3R_{92}X^{236}\to\,_{56}Y^{141}+\,_{36}Z^{92}+3R92​X236→56​Y141+36​Z92+3R. The identity of emitted particles (R) is:
  1. (A)Proton
  2. (B)Electron
  3. (C)Neutron
  4. (D)γ\gammaγ-radiations

Correct answer: (C)

Step-by-step solution →
Q3·PhysicsSingle correct
If ε0\varepsilon_0ε0​ is the permittivity of free space and E is the electric field, then ε0E2\varepsilon_0 E^2ε0​E2 has the dimensions:
  1. (A)[M0L−2TA][M^0L^{-2}TA][M0L−2TA]
  2. (B)[ML−1T−2][ML^{-1}T^{-2}][ML−1T−2]
  3. (C)[M−1L−3T4A2][M^{-1}L^{-3}T^4A^2][M−1L−3T4A2]
  4. (D)[ML2T−2][ML^2T^{-2}][ML2T−2]

Correct answer: (B)

Step-by-step solution →
Q4·PhysicsSingle correct
The position of the image formed by the combination of lenses is:
  1. (A)30 cm (right of third lens)
  2. (B)15 cm (left of second lens)
  3. (C)30 cm (left of third lens)
  4. (D)15 cm (right of second lens)

Correct answer: (A)

Step-by-step solution →
Q5·PhysicsSingle correct
A plane progressive wave is given by y=2cos⁡2π(330 t−x)y=2\cos 2\pi(330\,t-x)y=2cos2π(330t−x) m. The frequency of the wave is:
  1. (A)165 Hz
  2. (B)330 Hz
  3. (C)660 Hz
  4. (D)340 Hz

Correct answer: (B)

Step-by-step solution →
Q6·PhysicsSingle correct
A thin circular disc of mass M and radius R is rotating in a horizontal plane about an axis passing through its centre and perpendicular to its plane with angular velocity ω\omegaω. If another disc of same dimensions but of mass M2\dfrac{M}{2}2M​ is placed gently on the first disc co-axially, then the new angular velocity of the system is:
  1. (A)4ω5\dfrac{4\omega}{5}54ω​
  2. (B)5ω4\dfrac{5\omega}{4}45ω​
  3. (C)2ω3\dfrac{2\omega}{3}32ω​
  4. (D)3ω2\dfrac{3\omega}{2}23ω​

Correct answer: (C)

Step-by-step solution →
Q7·PhysicsSingle correct
A cube of ice floats partly in water and partly in kerosene oil. The ratio of volume of ice immersed in water to that in kerosene oil (specific gravity of kerosene oil = 0.8, specific gravity of ice = 0.9) is:
  1. (A)8 : 9
  2. (B)5 : 4
  3. (C)9 : 10
  4. (D)1 : 1

Correct answer: (D)

Step-by-step solution →
Q8·PhysicsSingle correct
Given below are two statements: Statement (I): The mean free path of gas molecules is inversely proportional to square of molecular diameter. Statement (II): Average kinetic energy of gas molecules is directly proportional to absolute temperature of gas. In the light of the above statements, choose the correct answer from the option given below:
  1. (A)Statement I is false but Statement II is true.
  2. (B)Statement I is true but Statement II is false.
  3. (C)Both Statement I and Statement II are false
  4. (D)Both Statement I and Statement II are true.

Correct answer: (D)

Step-by-step solution →
Q9·PhysicsSingle correct
Two satellites A and B go round a planet in circular orbits having radii 4R and R respectively. If the speed of A is 3v, the speed of B will be:
  1. (A)43v\dfrac{4}{3}v34​v
  2. (B)3v3v3v
  3. (C)6v6v6v
  4. (D)12v12v12v

Correct answer: (C)

Step-by-step solution →
Q10·PhysicsSingle correct
A long straight wire of radius aaa carries a steady current I. The current is uniformly distributed across its cross section. The ratio of the magnetic field at a2\dfrac{a}{2}2a​ and 2a2a2a from axis of the wire is:
  1. (A)1 : 4
  2. (B)4 : 1
  3. (C)1 : 1
  4. (D)3 : 4

Correct answer: (C)

Step-by-step solution →
Q11·PhysicsSingle correct
The angle of projection for a projectile to have same horizontal range and maximum height is:
  1. (A)tan⁡−1(2)\tan^{-1}(2)tan−1(2)
  2. (B)tan⁡−1(4)\tan^{-1}(4)tan−1(4)
  3. (C)tan⁡−1(14)\tan^{-1}\left(\dfrac{1}{4}\right)tan−1(41​)
  4. (D)tan⁡−1(12)\tan^{-1}\left(\dfrac{1}{2}\right)tan−1(21​)

Correct answer: (B)

Step-by-step solution →
Q12·PhysicsSingle correct
Water boils in an electric kettle in 20 minutes after being switched on. Using the same main supply, the length of the heating element should be ________ to ________ times of its initial length if the water is to be boiled in 15 minutes.
  1. (A)increased, 34\dfrac{3}{4}43​
  2. (B)increased, 43\dfrac{4}{3}34​
  3. (C)decreased, 34\dfrac{3}{4}43​
  4. (D)decreased, 43\dfrac{4}{3}34​

Correct answer: (C)

Step-by-step solution →
Q13·PhysicsSingle correct
A capacitor has air as dielectric medium and two conducting plates of area 12 cm2^22 and they are 0.6 cm apart. When a slab of dielectric having area 12 cm2^22 and 0.6 cm thickness is inserted between the plates, one of the conducting plates has to be moved by 0.2 cm to keep the capacitance same as in previous case. The dielectric constant of the slab is: (Given ε=8.834×10−12\varepsilon=8.834\times10^{-12}ε=8.834×10−12 F/m)
  1. (A)1.50
  2. (B)1.33
  3. (C)0.66
  4. (D)1

Correct answer: (A)

Step-by-step solution →
Q14·PhysicsSingle correct
A given object takes nnn times the time to slide down a 45° rough inclined plane as it takes to slide down an identical perfectly smooth 45° inclined plane. The coefficient of kinetic friction between the object and the surface of inclined plane is:
  1. (A)1−1n21-\dfrac{1}{n^2}1−n21​
  2. (B)1−n21-n^21−n2
  3. (C)1−1n2\sqrt{1-\dfrac{1}{n^2}}1−n21​​
  4. (D)11−n2\dfrac{1}{\sqrt{1-n^2}}1−n2​1​

Correct answer: (A)

Step-by-step solution →
Q15·PhysicsSingle correct
A coil of negligible resistance is connected in series with a 90 Ω\OmegaΩ resistor across a 120 V, 60 Hz supply. A voltmeter reads 36 V across the resistance. Inductance of the coil is:
  1. (A)0.76 H
  2. (B)2.86 H
  3. (C)0.286 H
  4. (D)0.91 H

Correct answer: (A)

Step-by-step solution →
Q16·PhysicsSingle correct
There are 100 divisions on the circular scale of a screw gauge of pitch 1 mm. With no measuring quantity in between the jaws, the zero of the circular scale lies 5 divisions below the reference line. The diameter of a wire is then measured using this screw gauge. It is found that 4 linear scale divisions are clearly visible while 60 divisions on circular scale coincide with the reference line. The diameter of the wire is:
  1. (A)4.65 mm
  2. (B)4.55 mm
  3. (C)4.60 mm
  4. (D)3.35 mm

Correct answer: (B)

Step-by-step solution →
Q17·PhysicsSingle correct
A proton and an electron have the same de Broglie wavelength. If KpK_pKp​ and KeK_eKe​ be the kinetic energies of proton and electron respectively, then choose the correct relation:
  1. (A)Kp>KeK_p>K_eKp​>Ke​
  2. (B)Kp=KeK_p=K_eKp​=Ke​
  3. (C)Kp=Ke2K_p=\dfrac{K_e}{2}Kp​=2Ke​​
  4. (D)Kp<KeK_p<K_eKp​<Ke​

Correct answer: (D)

Step-by-step solution →
Q18·PhysicsSingle correct
Least count of a vernier caliper is 120N\dfrac{1}{20N}20N1​ cm. The value of one division on the main scale is 1 mm. Then the number of divisions of main scale that coincide with N divisions of vernier scale is:
  1. (A)(2N−120N)\left(\dfrac{2N-1}{20N}\right)(20N2N−1​)
  2. (B)(2N−12)\left(\dfrac{2N-1}{2}\right)(22N−1​)
  3. (C)(2N−1)(2N-1)(2N−1)
  4. (D)(2N−12N)\left(\dfrac{2N-1}{2N}\right)(2N2N−1​)

Correct answer: (B)

Step-by-step solution →
Q19·PhysicsSingle correct
If MoM_oMo​ is the mass of isotope 512B_5^{12}B512​B, MpM_pMp​ and MnM_nMn​ are the masses of proton and neutron, then nuclear binding energy of the isotope is:
  1. (A)(5Mp+7Mn−Mo)C2(5M_p+7M_n-M_o)C^2(5Mp​+7Mn​−Mo​)C2
  2. (B)(Mo−5Mp)C2(M_o-5M_p)C^2(Mo​−5Mp​)C2
  3. (C)(Mo−12Mn)C2(M_o-12M_n)C^2(Mo​−12Mn​)C2
  4. (D)(Mo−5Mp−7Mn)C2(M_o-5M_p-7M_n)C^2(Mo​−5Mp​−7Mn​)C2

Correct answer: (A)

Step-by-step solution →
Q20·PhysicsSingle correct
A diatomic gas (γ=1.4\gamma=1.4γ=1.4) does 100 J of work in an isobaric expansion. The heat given to the gas is:
  1. (A)350 J
  2. (B)490 J
  3. (C)150 J
  4. (D)250 J

Correct answer: (A)

Step-by-step solution →
Q21·PhysicsNumerical
The coercivity of a magnet is 5×1035\times10^35×103 A/m. The amount of current required to be passed in a solenoid of length 30 cm and the number of turns 150, so that the magnet gets demagnetised when inside the solenoid is ________ A.

Correct answer: 10

Step-by-step solution →
Q22·PhysicsNumerical
Small water droplets of radius 0.01 mm are formed in the upper atmosphere and falling with a terminal velocity of 10 cm/s. Due to condensation, if 8 such droplets are coalesced and formed a larger drop, the new terminal velocity will be ________ cm/s.

Correct answer: 40

Step-by-step solution →
Q23·PhysicsNumerical
If the net electric field at point P along the Y axis is zero, then the ratio of q2q3\dfrac{q_2}{q_3}q3​q2​​ is 85x\dfrac{8}{5x}5x8​, where x = ________ .

Correct answer: 5

Step-by-step solution →
Q24·PhysicsNumerical
A heater is designed to operate with a power of 1000 W in a 100 V line. It is connected in combination with a resistance of 10 Ω\OmegaΩ and a resistance R, to a 100 V mains as shown in figure. For the heater to operate at 62.5 W, the value of R should be ________ Ω\OmegaΩ.

Correct answer: 5

Step-by-step solution →
Q25·PhysicsNumerical
An alternating emf E=1102sin⁡100tE=110\sqrt{2}\sin 100tE=1102​sin100t volt is applied to a capacitor of 2 μ\muμF, the rms value of current in the circuit is ________ mA.

Correct answer: 22

Step-by-step solution →
Q26·PhysicsNumerical
Two slits are 1 mm apart and the screen is located 1 m away from the slits. A light of wavelength 500 nm is used. The width of each slit to obtain 10 maxima of the double slit pattern within the central maximum of the single slit pattern is ________ ×10−4\times 10^{-4}×10−4 m.

Correct answer: 2

Step-by-step solution →
Q27·PhysicsNumerical
An object of mass 0.2 kg executes simple harmonic motion along the x axis with frequency of 25π\dfrac{25}{\pi}π25​ Hz. At the position x = 0.04 m the object has kinetic energy 0.5 J and potential energy 0.4 J. The amplitude of oscillation is ________ cm.

Correct answer: 6

Step-by-step solution →
Q28·PhysicsNumerical
A potential divider circuit is connected with a dc source of 20 V, a light emitting diode of glow in voltage 1.8 V and a zener diode of breakdown voltage of 3.2 V. The length (PR) of the resistive wire is 20 cm. The minimum length of PQ to just glow the LED is ________ cm.

Correct answer: 5

Step-by-step solution →
Q29·PhysicsNumerical
A body of mass M thrown horizontally with velocity v from the top of the tower of height H touches the ground at a distance of 100 m from the foot of the tower. A body of mass 2M thrown at a velocity v2\dfrac{v}{2}2v​ from the top of the tower of height 4H will touch the ground at a distance of ________ m.

Correct answer: 100

Step-by-step solution →
Q30·PhysicsNumerical
A circular table is rotating with an angular velocity of ω\omegaω rad/s about its axis. There is a smooth groove along a radial direction on the table. A steel ball is gently placed at a distance of 1 m on the groove. All the surfaces are smooth. If the radius of the table is 3 m, the radial velocity of the ball w.r.t. the table at the time the ball leaves the table is x2x\sqrt{2}x2​ m/s, where the value of x is ________ .

Correct answer: 2

Step-by-step solution →

Chemistry — JEE Main 8 April 2024 Shift 2

Q31·ChemistrySingle correct
In qualitative test for identification of presence of phosphorous, the compound is heated with an oxidising agent, which is further treated with nitric acid and ammonium molybdate respectively. The yellow coloured precipitate obtained is:
  1. (A)Na3PO4⋅12MoO3\text{Na}_3\text{PO}_4\cdot 12\text{MoO}_3Na3​PO4​⋅12MoO3​
  2. (B)(NH4)3PO4⋅12(NH4)2MoO4(\text{NH}_4)_3\text{PO}_4\cdot 12(\text{NH}_4)_2\text{MoO}_4(NH4​)3​PO4​⋅12(NH4​)2​MoO4​
  3. (C)(NH4)3PO4⋅12MoO3(\text{NH}_4)_3\text{PO}_4\cdot 12\text{MoO}_3(NH4​)3​PO4​⋅12MoO3​
  4. (D)MoPO4⋅21NH4NO3\text{MoPO}_4\cdot 21\text{NH}_4\text{NO}_3MoPO4​⋅21NH4​NO3​

Correct answer: (C)

Step-by-step solution →
Q32·ChemistrySingle correct
For a reaction A→K1B→K2CA\xrightarrow{K_1}B\xrightarrow{K_2}CAK1​​BK2​​C, if the rate of formation of B is set to be zero then the concentration of B is given by:
  1. (A)K1K2[A]K_1K_2[A]K1​K2​[A]
  2. (B)(K1−K2)[A](K_1-K_2)[A](K1​−K2​)[A]
  3. (C)(K1+K2)[A](K_1+K_2)[A](K1​+K2​)[A]
  4. (D)(K1K2)[A]\left(\dfrac{K_1}{K_2}\right)[A](K2​K1​​)[A]

Correct answer: (D)

Step-by-step solution →
Q33·ChemistrySingle correct
When ψA\psi_AψA​ and ψB\psi_BψB​ are the wave functions of atomic orbitals, then ψ∗\psi^*ψ∗ is represented by:
  1. (A)ψA−2ψB\psi_A-2\psi_BψA​−2ψB​
  2. (B)ψA−ψB\psi_A-\psi_BψA​−ψB​
  3. (C)ψA+2ψB\psi_A+2\psi_BψA​+2ψB​
  4. (D)ψA+ψB\psi_A+\psi_BψA​+ψB​

Correct answer: (B)

Step-by-step solution →
Q34·ChemistrySingle correct
Which one of the following compounds will readily react with dilute NaOH?
  1. (A)C6H5CH2OH\text{C}_6\text{H}_5\text{CH}_2\text{OH}C6​H5​CH2​OH
  2. (B)C2H5OH\text{C}_2\text{H}_5\text{OH}C2​H5​OH
  3. (C)(CH3)3COH(\text{CH}_3)_3\text{COH}(CH3​)3​COH
  4. (D)C6H5OH\text{C}_6\text{H}_5\text{OH}C6​H5​OH

Correct answer: (D)

Step-by-step solution →
Q35·Chemistry·Electronic Effects and StabilitySingle correct
The shape of carbocation is:
  1. (A)trigonal planar
  2. (B)diagonal pyramidal
  3. (C)tetrahedral
  4. (D)diagonal

Correct answer: (A)

Step-by-step solution →
Q36·ChemistrySingle correct
Given below are two statements: Statement (I): SN2 reactions are "stereospecific", indicating that they result in the formation of only one stereo-isomer as the product. Statement (II): SN1 reactions generally result in formation of product as racemic mixtures. In the light of the above statements, choose the correct answer from the options given below:
  1. (A)Statement I is true but Statement II is false
  2. (B)Statement I is false but Statement II is true
  3. (C)Both Statement I and Statement II is true
  4. (D)Both Statement I and Statement II is false

Correct answer: (C)

Step-by-step solution →
Q37·ChemistrySingle correct
Match List-I (Reactions) with List-II (Products). Choose the correct answer from the options given below:
List-I (Reactions)List-II (Products)
A.see figureI.see figure
B.see figureII.see figure
C.see figureIII.see figure
D.see figureIV.see figure
  1. (A)(A)-(III), (B)-(II), (C)-(I), (D)-(IV)
  2. (B)(A)-(IV), (B)-(II), (C)-(III), (D)-(I)
  3. (C)(A)-(I), (B)-(IV), (C)-(II), (D)-(III)
  4. (D)(A)-(II), (B)-(IV), (C)-(I), (D)-(III)

Correct answer: (D)

Step-by-step solution →
Q38·ChemistrySingle correct
Match List-I (Test) with List-II (Identification). Choose the correct answer from the options given below:
List-I (Test)List-II (Identification)
A.Bayer's testI.Phenol
B.Ceric ammonium nitrate testII.Aldehyde
C.Phthalein dye testIII.Alcoholic-OH group
D.Schiff's testIV.Unsaturation
  1. (A)(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
  2. (B)(A)-(II), (B)-(III), (C)-(IV), (D)-(I)
  3. (C)(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
  4. (D)(A)-(IV), (B)-(III), (C)-(I), (D)-(II)

Correct answer: (D)

Step-by-step solution →
Q39·ChemistrySingle correct
Identify the incorrect statements about group 15 elements: (A) Dinitrogen is a diatomic gas which acts like an inert gas at room temperature. (B) The common oxidation states of these elements are −3-3−3, +3+3+3 and +5+5+5. (C) Nitrogen has unique ability to form pπ−pπp\pi-p\pipπ−pπ multiple bonds. (D) The stability of +5+5+5 oxidation states increases down the group. (E) Nitrogen shows a maximum covalency of 6. Choose the correct answer from the options given below.
  1. (A)(A), (B), (D) only
  2. (B)(A), (C), (E) only
  3. (C)(B), (D), (E) only
  4. (D)(D) and (E) only

Correct answer: (D)

Step-by-step solution →
Q40·Chemistry·IUPAC NomenclatureSingle correct
IUPAC name of the following hydrocarbon (X) is: CH3-CH(CH3)-CH2-CH2-CH(CH3)-CH(CH3)-CH2-CH3\text{CH}_3\text{-CH(CH}_3)\text{-CH}_2\text{-CH}_2\text{-CH(CH}_3)\text{-CH(CH}_3)\text{-CH}_2\text{-CH}_3CH3​-CH(CH3​)-CH2​-CH2​-CH(CH3​)-CH(CH3​)-CH2​-CH3​
  1. (A)2-Ethyl-3,6-dimethylheptane
  2. (B)2-Ethyl-2,6-diethylheptane
  3. (C)2,5,6-Trimethyloctane
  4. (D)3,4,7-Trimethyloctane

Correct answer: (C)

Step-by-step solution →
Q41·ChemistrySingle correct
The equilibrium Cr2O72−⇌2CrO42−\text{Cr}_2\text{O}_7^{2-}\rightleftharpoons 2\text{CrO}_4^{2-}Cr2​O72−​⇌2CrO42−​ is shifted to the right in:
  1. (A)an acidic medium
  2. (B)a basic medium
  3. (C)a weakly acidic medium
  4. (D)a neutral medium

Correct answer: (B)

Step-by-step solution →
Q42·ChemistrySingle correct
Given below are two statements: Statement (I): A buffer solution is the mixture of a salt and an acid or a base mixed in any particular quantities. Statement (II): Blood is naturally occurring buffer solution whose pH is maintained by H2CO3/HCO3−\text{H}_2\text{CO}_3/\text{HCO}_3^-H2​CO3​/HCO3−​ concentrations. In the light of the above statements, choose the correct answer from the options given below.
  1. (A)Statement I is false but Statement II is true
  2. (B)Both Statement I and Statement II is true
  3. (C)Both Statement I and Statement II is false
  4. (D)Statement I is true but Statement II is false

Correct answer: (A)

Step-by-step solution →
Q43·ChemistrySingle correct
The correct sequence of acidic strength of the following aliphatic acids in their decreasing order is: CH3CH2COOH\text{CH}_3\text{CH}_2\text{COOH}CH3​CH2​COOH, CH3COOH\text{CH}_3\text{COOH}CH3​COOH, CH3CH2CH2COOH\text{CH}_3\text{CH}_2\text{CH}_2\text{COOH}CH3​CH2​CH2​COOH, HCOOH\text{HCOOH}HCOOH
  1. (A)HCOOH>CH3COOH>CH3CH2COOH>CH3CH2CH2COOH\text{HCOOH}>\text{CH}_3\text{COOH}>\text{CH}_3\text{CH}_2\text{COOH}>\text{CH}_3\text{CH}_2\text{CH}_2\text{COOH}HCOOH>CH3​COOH>CH3​CH2​COOH>CH3​CH2​CH2​COOH
  2. (B)HCOOH>CH3CH2CH2COOH>CH3CH2COOH>CH3COOH\text{HCOOH}>\text{CH}_3\text{CH}_2\text{CH}_2\text{COOH}>\text{CH}_3\text{CH}_2\text{COOH}>\text{CH}_3\text{COOH}HCOOH>CH3​CH2​CH2​COOH>CH3​CH2​COOH>CH3​COOH
  3. (C)CH3CH2CH2COOH>CH3CH2COOH>CH3COOH>HCOOH\text{CH}_3\text{CH}_2\text{CH}_2\text{COOH}>\text{CH}_3\text{CH}_2\text{COOH}>\text{CH}_3\text{COOH}>\text{HCOOH}CH3​CH2​CH2​COOH>CH3​CH2​COOH>CH3​COOH>HCOOH
  4. (D)CH3COOH>CH3CH2COOH>CH3CH2CH2COOH>HCOOH\text{CH}_3\text{COOH}>\text{CH}_3\text{CH}_2\text{COOH}>\text{CH}_3\text{CH}_2\text{CH}_2\text{COOH}>\text{HCOOH}CH3​COOH>CH3​CH2​COOH>CH3​CH2​CH2​COOH>HCOOH

Correct answer: (A)

Step-by-step solution →
Q44·ChemistrySingle correct
Given below are two statements: Statement (I): All the following compounds react with p-toluenesulfonyl chloride. C6H5NH2\text{C}_6\text{H}_5\text{NH}_2C6​H5​NH2​, (C6H5)2NH(\text{C}_6\text{H}_5)_2\text{NH}(C6​H5​)2​NH, (C6H5)3N(\text{C}_6\text{H}_5)_3\text{N}(C6​H5​)3​N. Statement (II): Their products in the above reaction are soluble in aqueous NaOH. In the light of the above statements, choose the correct answer from the options given below.
  1. (A)Both Statement I and Statement II is false
  2. (B)Statement I is true but Statement II is false
  3. (C)Statement I is false but Statement II is true
  4. (D)Both Statement I and Statement II is true

Correct answer: (A)

Step-by-step solution →
Q45·ChemistrySingle correct
The emf of the cell Tl ∣ Tl+(0.001 M) ∣∣ Cu2+(0.01 M) ∣ Cu\text{Tl}\,|\,\text{Tl}^+(0.001\,\text{M})\,||\,\text{Cu}^{2+}(0.01\,\text{M})\,|\,\text{Cu}Tl∣Tl+(0.001M)∣∣Cu2+(0.01M)∣Cu is 0.83 V at 298 K. It could be increased by:
  1. (A)increasing concentration of Tl+\text{Tl}^+Tl+ ions
  2. (B)increasing concentration of both Tl+\text{Tl}^+Tl+ and Cu2+\text{Cu}^{2+}Cu2+ ions
  3. (C)decreasing concentration of both Tl+\text{Tl}^+Tl+ and Cu2+\text{Cu}^{2+}Cu2+ ions
  4. (D)increasing concentration of Cu2+\text{Cu}^{2+}Cu2+ ions

Correct answer: (D)

Step-by-step solution →
Q46·ChemistrySingle correct
Identify the correct statements about p-block elements and their compounds. (A) Non metals have higher electronegativity than metals. (B) Non metals have lower ionisation enthalpy than metals. (C) Compounds formed between highly reactive nonmetals and highly reactive metals are generally ionic. (D) The non-metal oxides are generally basic in nature. (E) The metal oxides are generally acidic or neutral in nature.
  1. (A)(D) and (E) only
  2. (B)(A) and (C) only
  3. (C)(B) and (E) only
  4. (D)(B) and (D) only

Correct answer: (B)

Step-by-step solution →
Q47·ChemistrySingle correct
Given below are two statements: Statement (I): Kjeldahl method is applicable to estimate nitrogen in pyridine. Statement (II): The nitrogen present in pyridine can easily be converted into ammonium sulphate in Kjeldahl method. In the light of the above statements, choose the correct answer from the options given below.
  1. (A)Both Statement I and Statement II is false
  2. (B)Statement I is false but Statement II is true
  3. (C)Both Statement I and Statement II is true
  4. (D)Statement I is true but Statement II is false

Correct answer: (A)

Step-by-step solution →
Q48·ChemistrySingle correct
The reaction 12H2(g)+AgCl(s)→H+(aq)+Cl−(aq)+Ag(s)\tfrac{1}{2}\text{H}_2(g)+\text{AgCl}(s)\to \text{H}^+(aq)+\text{Cl}^-(aq)+\text{Ag}(s)21​H2​(g)+AgCl(s)→H+(aq)+Cl−(aq)+Ag(s) occurs in which of the following galvanic cell:
  1. (A)Pt ∣ H2(g) ∣ HCl(soln.) ∣ AgCl(s) ∣ Ag\text{Pt}\,|\,\text{H}_2(g)\,|\,\text{HCl(soln.)}\,|\,\text{AgCl}(s)\,|\,\text{Ag}Pt∣H2​(g)∣HCl(soln.)∣AgCl(s)∣Ag
  2. (B)Pt ∣ H2(g) ∣ HCl(soln.) ∣ AgNO3(aq) ∣ Ag\text{Pt}\,|\,\text{H}_2(g)\,|\,\text{HCl(soln.)}\,|\,\text{AgNO}_3(aq)\,|\,\text{Ag}Pt∣H2​(g)∣HCl(soln.)∣AgNO3​(aq)∣Ag
  3. (C)Pt ∣ H2(g) ∣ KCl(soln.) ∣ AgCl(s) ∣ Ag\text{Pt}\,|\,\text{H}_2(g)\,|\,\text{KCl(soln.)}\,|\,\text{AgCl}(s)\,|\,\text{Ag}Pt∣H2​(g)∣KCl(soln.)∣AgCl(s)∣Ag
  4. (D)Ag ∣ AgCl(s) ∣ KCl(soln.) ∣ AgNO3(aq.) ∣ Ag\text{Ag}\,|\,\text{AgCl}(s)\,|\,\text{KCl(soln.)}\,|\,\text{AgNO}_3(aq.)\,|\,\text{Ag}Ag∣AgCl(s)∣KCl(soln.)∣AgNO3​(aq.)∣Ag

Correct answer: (C)

Step-by-step solution →
Q49·ChemistrySingle correct
Given below are two statements: Statement (I): Fusion of MnO2\text{MnO}_2MnO2​ with KOH and an oxidising agent gives dark green K2MnO4\text{K}_2\text{MnO}_4K2​MnO4​. Statement (II): Manganate ion on electrolytic oxidation in alkaline medium gives permanganate ion. In the light of the above statements, choose the correct answer from the options given below.
  1. (A)Both Statement I and Statement II is true
  2. (B)Both Statement I and Statement II is false
  3. (C)Statement I is true but Statement II is false
  4. (D)Statement I is false but Statement II is true

Correct answer: (A)

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Q50·ChemistrySingle correct
Match List-I (Complex ion) with List-II (Spin only magnetic moment in B.M.). Choose the correct answer from the options given below:
List-I (Complex ion)List-II (Spin only magnetic moment in B.M.)
A.[Cr(NH3)6]3+[\text{Cr(NH}_3)_6]^{3+}[Cr(NH3​)6​]3+I.4.90
B.[NiCl4]2−[\text{NiCl}_4]^{2-}[NiCl4​]2−II.3.87
C.[CoF6]3−[\text{CoF}_6]^{3-}[CoF6​]3−III.0.0
D.[Ni(CN)4]2−[\text{Ni(CN)}_4]^{2-}[Ni(CN)4​]2−IV.2.83
  1. (A)(A)-(I), (B)-(IV), (C)-(II), (D)-(III)
  2. (B)(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
  3. (C)(A)-(II), (B)-(IV), (C)-(I), (D)-(III)
  4. (D)(A)-(II), (B)-(III), (C)-(I), (D)-(IV)

Correct answer: (C)

Step-by-step solution →
Q51·ChemistryNumerical
ΔvapH⊖\Delta_{vap}H^{\ominus}Δvap​H⊖ for water is +40.79+40.79+40.79 kJ mol−1^{-1}−1 at 1 bar and 100°C. Change in internal energy for this vapourisation under same condition is _______ kJ mol−1^{-1}−1. (Integer answer) (Given R =8.3=8.3=8.3 JK−1^{-1}−1 mol−1^{-1}−1)

Correct answer: 38

Step-by-step solution →
Q52·ChemistryNumerical
Number of molecules having bond order 2 from the following molecules is _______. C2\text{C}_2C2​, O2\text{O}_2O2​, Be2\text{Be}_2Be2​, Li2\text{Li}_2Li2​, Ne2\text{Ne}_2Ne2​, N2\text{N}_2N2​, He2\text{He}_2He2​

Correct answer: 2

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Q53·Chemistry·IsomerismNumerical
Total number of optically active compounds from the following is _______ .

Correct answer: 1

Step-by-step solution →
Q54·ChemistryNumerical
The total number of carbon atoms present in tyrosine, an amino acid, is _______ .

Correct answer: 9

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Q55·ChemistryNumerical
Two moles of benzaldehyde and one mole of acetone under alkaline conditions using aqueous NaOH after heating gives x as the major product. The number of π\piπ bonds in the product x is _______ .

Correct answer: 9

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Q56·Chemistry·AromaticityNumerical
Total number of aromatic compounds among the following compounds is _______ .

Correct answer: 1

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Q57·ChemistryNumerical
Molality of an aqueous solution of urea is 4.44 m. Mole fraction of urea in solution is x×10−3x\times10^{-3}x×10−3. Value of x is _______ . (integer answer)

Correct answer: 74

Step-by-step solution →
Q58·ChemistryNumerical
Total number of unpaired electrons in the complex ions [Co(NH3)6]3+[\text{Co(NH}_3)_6]^{3+}[Co(NH3​)6​]3+ and [NiCl4]2−[\text{NiCl}_4]^{2-}[NiCl4​]2− is _______ .

Correct answer: 2

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Q59·ChemistryNumerical
Wavenumber for a radiation having 5800 Å wavelength is x×10x\times10x×10 cm−1^{-1}−1. The value of x is _______ .

Correct answer: 1724

Step-by-step solution →
Q60·ChemistryNumerical
A solution is prepared by adding 1 mole ethyl alcohol in 9 mole water. The mass percent of solute in the solution is _______ . (Integer Answer) (Given: Molar mass in g mol−1^{-1}−1 — Ethyl alcohol: 46, water: 18)

Correct answer: 22

Step-by-step solution →

Mathematics — JEE Main 8 April 2024 Shift 2

Q61·MathematicsSingle correct
If the image of the point (−4,5)(-4,5)(−4,5) in the line x+2y=2x+2y=2x+2y=2 lies on the circle (x+4)2+(y−3)2=r2(x+4)^2+(y-3)^2=r^2(x+4)2+(y−3)2=r2, then rrr is equal to
  1. (A)111
  2. (B)222
  3. (C)5\sqrt{5}5​
  4. (D)333

Correct answer: (B)

Step-by-step solution →
Q62·MathematicsSingle correct
Let a⃗=i^+2j^+3k^\vec{a}=\hat{i}+2\hat{j}+3\hat{k}a=i^+2j^​+3k^, b⃗=2i^+3j^−5k^\vec{b}=2\hat{i}+3\hat{j}-5\hat{k}b=2i^+3j^​−5k^ and c⃗=3i^−j^+λk^\vec{c}=3\hat{i}-\hat{j}+\lambda\hat{k}c=3i^−j^​+λk^ be three vectors. Let r⃗\vec{r}r be a unit vector along b⃗+c⃗\vec{b}+\vec{c}b+c. If r⃗⋅a⃗=3\vec{r}\cdot\vec{a}=3r⋅a=3, then 3λ3\lambda3λ is equal to
  1. (A)272727
  2. (B)252525
  3. (C)232323
  4. (D)212121

Correct answer: (B)

Step-by-step solution →
Q63·MathematicsSingle correct
If α≠a\alpha\ne aα=a, β≠b\beta\ne bβ=b, γ≠c\gamma\ne cγ=c and ∣αbcaβcabγ∣=0\begin{vmatrix}\alpha&b&c\\a&\beta&c\\a&b&\gamma\end{vmatrix}=0​αaa​bβb​ccγ​​=0, then aα−a+bβ−b+γγ−c\dfrac{a}{\alpha-a}+\dfrac{b}{\beta-b}+\dfrac{\gamma}{\gamma-c}α−aa​+β−bb​+γ−cγ​ is equal to
  1. (A)222
  2. (B)333
  3. (C)000
  4. (D)111

Correct answer: (C)

Step-by-step solution →
Q64·MathematicsSingle correct
In an increasing geometric progression of positive terms, the sum of the second and sixth terms is 703\dfrac{70}{3}370​ and the product of the third and fifth terms is 494949. Then the sum of the 444th, 666th and 888th terms is
  1. (A)969696
  2. (B)787878
  3. (C)919191
  4. (D)848484

Correct answer: (C)

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Q65·MathematicsSingle correct
The number of ways five alphabets can be chosen from the alphabets of the word MATHEMATICS, where the chosen alphabets are not necessarily distinct, is equal to
  1. (A)175175175
  2. (B)181181181
  3. (C)177177177
  4. (D)179179179

Correct answer: (D)

Step-by-step solution →
Q66·MathematicsSingle correct
The sum of all possible values of θ∈[−π,2π]\theta\in[-\pi,2\pi]θ∈[−π,2π], for which 1+icos⁡θ1−2icos⁡θ\dfrac{1+i\cos\theta}{1-2i\cos\theta}1−2icosθ1+icosθ​ is purely imaginary, is equal to
  1. (A)2π2\pi2π
  2. (B)3π3\pi3π
  3. (C)5π5\pi5π
  4. (D)4π4\pi4π

Correct answer: (B)

Step-by-step solution →
Q67·MathematicsSingle correct
If the system of equations x+4y−z=λx+4y-z=\lambdax+4y−z=λ, 7x+9y+μz=−37x+9y+\mu z=-37x+9y+μz=−3, 5x+y+2z=−15x+y+2z=-15x+y+2z=−1 has infinitely many solutions, then (2μ+3λ)(2\mu+3\lambda)(2μ+3λ) is equal to
  1. (A)222
  2. (B)−3-3−3
  3. (C)333
  4. (D)−2-2−2

Correct answer: (B)

Step-by-step solution →
Q68·MathematicsSingle correct
If the shortest distance between the lines x−λ2=y−43=z−34\dfrac{x-\lambda}{2}=\dfrac{y-4}{3}=\dfrac{z-3}{4}2x−λ​=3y−4​=4z−3​ and x−24=y−46=z−78\dfrac{x-2}{4}=\dfrac{y-4}{6}=\dfrac{z-7}{8}4x−2​=6y−4​=8z−7​ is 1329\dfrac{13}{\sqrt{29}}29​13​, then a value of λ\lambdaλ is
  1. (A)−1325-\tfrac{13}{25}−2513​
  2. (B)1325\tfrac{13}{25}2513​
  3. (C)111
  4. (D)−1-1−1

Correct answer: (C)

Step-by-step solution →
Q69·MathematicsSingle correct
If the value of 3cos⁡36∘+5sin⁡18∘5cos⁡36∘−3sin⁡18∘\dfrac{3\cos 36^\circ+5\sin 18^\circ}{5\cos 36^\circ-3\sin 18^\circ}5cos36∘−3sin18∘3cos36∘+5sin18∘​ is a5−bc\dfrac{a\sqrt{5}-b}{c}ca5​−b​, where aaa, bbb, ccc are natural numbers and gcd⁡(a,c)=1\gcd(a,c)=1gcd(a,c)=1, then a+b+ca+b+ca+b+c is equal to
  1. (A)505050
  2. (B)404040
  3. (C)525252
  4. (D)545454

Correct answer: (C)

Step-by-step solution →
Q70·MathematicsSingle correct
Let y=y(x)y=y(x)y=y(x) be the solution curve of the differential equation sec⁡y dydx+2xsin⁡y=x3cos⁡y\sec y\,\dfrac{dy}{dx}+2x\sin y=x^3\cos ysecydxdy​+2xsiny=x3cosy, y(1)=0y(1)=0y(1)=0. Then y(3)y(\sqrt{3})y(3​) is equal to
  1. (A)π3\tfrac{\pi}{3}3π​
  2. (B)π6\tfrac{\pi}{6}6π​
  3. (C)π4\tfrac{\pi}{4}4π​
  4. (D)π12\tfrac{\pi}{12}12π​

Correct answer: (C)

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Q71·MathematicsSingle correct
The area of the region in the first quadrant inside the circle x2+y2=8x^2+y^2=8x2+y2=8 and outside the parabola y2=2xy^2=2xy2=2x is equal to
  1. (A)π2−13\tfrac{\pi}{2}-\tfrac{1}{3}2π​−31​
  2. (B)π−23\pi-\tfrac{2}{3}π−32​
  3. (C)π2−23\tfrac{\pi}{2}-\tfrac{2}{3}2π​−32​
  4. (D)π−13\pi-\tfrac{1}{3}π−31​

Correct answer: (B)

Step-by-step solution →
Q72·MathematicsSingle correct
If the line segment joining the points (5,2)(5,2)(5,2) and (2,a)(2,a)(2,a) subtends an angle π4\dfrac{\pi}{4}4π​ at the origin, then the absolute value of the product of all possible values of aaa is
  1. (A)666
  2. (B)888
  3. (C)222
  4. (D)444

Correct answer: (D)

Step-by-step solution →
Q73·MathematicsSingle correct
Let a⃗=4i^−j^+k^\vec{a}=4\hat{i}-\hat{j}+\hat{k}a=4i^−j^​+k^, b⃗=11i^−j^+k^\vec{b}=11\hat{i}-\hat{j}+\hat{k}b=11i^−j^​+k^ and c⃗\vec{c}c be a vector such that (a⃗+b⃗)×c⃗=c⃗×(−2a⃗+3b⃗)(\vec{a}+\vec{b})\times\vec{c}=\vec{c}\times(-2\vec{a}+3\vec{b})(a+b)×c=c×(−2a+3b). If (2a⃗+3b⃗)⋅c⃗=1670(2\vec{a}+3\vec{b})\cdot\vec{c}=1670(2a+3b)⋅c=1670, then ∣c⃗∣2|\vec{c}|^2∣c∣2 is equal to
  1. (A)162716271627
  2. (B)161816181618
  3. (C)160016001600
  4. (D)160916091609

Correct answer: (B)

Step-by-step solution →
Q74·MathematicsSingle correct
If the function f(x)=2x3−9ax2+12a2x+1f(x)=2x^3-9ax^2+12a^2x+1f(x)=2x3−9ax2+12a2x+1, a>0a>0a>0 has a local maximum at x=αx=\alphax=α and a local minimum at x=α2x=\alpha^2x=α2, then α\alphaα and α2\alpha^2α2 are the roots of the equation
  1. (A)x2−6x+8=0x^2-6x+8=0x2−6x+8=0
  2. (B)8x2−6x+8=08x^2-6x+8=08x2−6x+8=0
  3. (C)8x2−6x+1=08x^2-6x+1=08x2−6x+1=0
  4. (D)x2+6x+8=0x^2+6x+8=0x2+6x+8=0

Correct answer: (A)

Step-by-step solution →
Q75·MathematicsSingle correct
There are three bags X, Y and Z. Bag X contains 5 one-rupee coins and 4 five-rupee coins; Bag Y contains 4 one-rupee coins and 5 five-rupee coins and Bag Z contains 3 one-rupee coins and 6 five-rupee coins. A bag is selected at random and a coin drawn from it at random is found to be a one-rupee coin. Then the probability, that it came from bag Y, is
  1. (A)13\tfrac{1}{3}31​
  2. (B)12\tfrac{1}{2}21​
  3. (C)14\tfrac{1}{4}41​
  4. (D)512\tfrac{5}{12}125​

Correct answer: (A)

Step-by-step solution →
Q76·MathematicsSingle correct
Let ∫alog⁡e4dxex−1=π6\displaystyle\int_{a}^{\log_e 4}\dfrac{dx}{\sqrt{e^x-1}}=\dfrac{\pi}{6}∫aloge​4​ex−1​dx​=6π​. Then eae^aea and e−ae^{-a}e−a are the roots of the equation
  1. (A)2x2−5x+2=02x^2-5x+2=02x2−5x+2=0
  2. (B)x2−2x−8=0x^2-2x-8=0x2−2x−8=0
  3. (C)2x2−5x−2=02x^2-5x-2=02x2−5x−2=0
  4. (D)x2+2x−8=0x^2+2x-8=0x2+2x−8=0

Correct answer: (A)

Step-by-step solution →
Q77·MathematicsSingle correct
Let f(x)={−aif −a≤x≤0x+aif 0<x≤af(x)=\begin{cases}-a & \text{if } -a\le x\le 0\\ x+a & \text{if } 0<x\le a\end{cases}f(x)={−ax+a​if −a≤x≤0if 0<x≤a​ where a>0a>0a>0 and g(x)=f(∣x∣)−∣f(x)∣2g(x)=\dfrac{f(|x|)-|f(x)|}{2}g(x)=2f(∣x∣)−∣f(x)∣​. Then the function g:[−a,a]→[−a,a]g:[-a,a]\to[-a,a]g:[−a,a]→[−a,a] is
  1. (A)neither one-one nor onto.
  2. (B)both one-one and onto.
  3. (C)one-one.
  4. (D)onto

Correct answer: (A)

Step-by-step solution →
Q78·MathematicsSingle correct
Let A={2,3,6,8,9,11}A=\{2,3,6,8,9,11\}A={2,3,6,8,9,11} and B={1,4,5,10,15}B=\{1,4,5,10,15\}B={1,4,5,10,15}. Let R be a relation on A×BA\times BA×B defined by (a,b) R (c,d)(a,b)\,R\,(c,d)(a,b)R(c,d) if and only if 3ad−7bc3ad-7bc3ad−7bc is an even integer. Then the relation R is
  1. (A)reflexive but not symmetric.
  2. (B)transitive but not symmetric.
  3. (C)reflexive and symmetric but not transitive.
  4. (D)an equivalence relation.

Correct answer: (C)

Step-by-step solution →
Q79·MathematicsSingle correct
For a,b>0a,b>0a,b>0, let f(x)={tan⁡((a+1)x)+btan⁡xx, x<03, x=0ax+b2x2−axba xx, x>0f(x)=\begin{cases}\dfrac{\tan((a+1)x)+b\tan x}{x} & ,\ x<0\\[2pt] 3 & ,\ x=0\\[2pt] \dfrac{\sqrt{ax+b^2x^2}-\sqrt{ax}}{b\sqrt{a}\,x\sqrt{x}} & ,\ x>0\end{cases}f(x)=⎩⎨⎧​xtan((a+1)x)+btanx​3ba​xx​ax+b2x2​−ax​​​, x<0, x=0, x>0​ be a continuous function at x=0x=0x=0. Then ba\dfrac{b}{a}ab​ is equal to
  1. (A)555
  2. (B)444
  3. (C)888
  4. (D)666

Correct answer: (D)

Step-by-step solution →
Q80·MathematicsSingle correct
If the term independent of xxx in the expansion of (a x2+12x3)10\left(\sqrt{a}\,x^2+\dfrac{1}{2x^3}\right)^{10}(a​x2+2x31​)10 is 105105105, then a2a^2a2 is equal to
  1. (A)444
  2. (B)999
  3. (C)666
  4. (D)222

Correct answer: (A)

Step-by-step solution →
Q81·MathematicsNumerical
Let A be the region enclosed by the parabola y2=2xy^2=2xy2=2x and the line x=24x=24x=24. Then the maximum area of the rectangle inscribed in the region A is _______ .

Correct answer: 128

Step-by-step solution →
Q82·MathematicsNumerical
If α=lim⁡x→0+(etan⁡x−extan⁡x−x)\alpha=\displaystyle\lim_{x\to 0^+}\left(\dfrac{e^{\sqrt{\tan x}}-e^{\sqrt{x}}}{\sqrt{\tan x}-\sqrt{x}}\right)α=x→0+lim​(tanx​−x​etanx​−ex​​) and β=lim⁡x→0(1+sin⁡x)12cot⁡x\beta=\displaystyle\lim_{x\to 0}(1+\sin x)^{\frac{1}{2}\cot x}β=x→0lim​(1+sinx)21​cotx are the roots of the quadratic equation ax2+bx−e=0ax^2+bx-\sqrt{e}=0ax2+bx−e​=0, then 12log⁡e(a+b)12\log_e(a+b)12loge​(a+b) is equal to _______ .

Correct answer: 6

Step-by-step solution →
Q83·MathematicsNumerical
Let S be the focus of the hyperbola x23−y25=1\dfrac{x^2}{3}-\dfrac{y^2}{5}=13x2​−5y2​=1, on the positive x-axis. Let C be the circle with its centre at A(6,5)A(\sqrt{6},\sqrt{5})A(6​,5​) and passing through the point S. If O is the origin and SAB is a diameter of C, then the square of the area of the triangle OSB is equal to _______ .

Correct answer: 40

Step-by-step solution →
Q84·MathematicsNumerical
Let P(α,β,γ)P(\alpha,\beta,\gamma)P(α,β,γ) be the image of the point Q(1,6,4)Q(1,6,4)Q(1,6,4) in the line x1=y−12=z−23\dfrac{x}{1}=\dfrac{y-1}{2}=\dfrac{z-2}{3}1x​=2y−1​=3z−2​. Then 2α+β+γ2\alpha+\beta+\gamma2α+β+γ is equal to _______ .

Correct answer: 11

Step-by-step solution →
Q85·MathematicsNumerical
An arithmetic progression is written in the following way: row 1 is 222; row 2 is 5, 85,\ 85, 8; row 3 is 11, 14, 1711,\ 14,\ 1711, 14, 17; row 4 is 20, 23, 26, 2920,\ 23,\ 26,\ 2920, 23, 26, 29; and so on. The sum of all the terms of the 101010th row is _______ .

Correct answer: 1505

Step-by-step solution →
Q86·MathematicsNumerical
The number of distinct real roots of the equation ∣x+1∣ ∣x+3∣−4 ∣x+2∣+5=0|x+1|\,|x+3|-4\,|x+2|+5=0∣x+1∣∣x+3∣−4∣x+2∣+5=0, is _______ .

Correct answer: 2

Step-by-step solution →
Q87·MathematicsNumerical
Let a ray of light passing through the point (3,10)(3,10)(3,10) reflect on the line 2x+y=62x+y=62x+y=6 and the reflected ray pass through the point (7,2)(7,2)(7,2). If the equation of the incident ray is ax+by+1=0ax+by+1=0ax+by+1=0, then a2+b2+3aba^2+b^2+3aba2+b2+3ab is equal to _______ .

Correct answer: 1

Step-by-step solution →
Q88·MathematicsNumerical
Let aaa, bbb, c∈Nc\in\mathbb{N}c∈N and a<b<ca<b<ca<b<c. Let the mean, the mean deviation about the mean and the variance of the 5 observations 999, 252525, aaa, bbb, ccc be 181818, 444 and 1365\dfrac{136}{5}5136​, respectively. Then 2a+b−c2a+b-c2a+b−c is equal to _______ .

Correct answer: 33

Step-by-step solution →
Q89·MathematicsNumerical
Let α∣x∣=∣y∣exy−β\alpha|x|=|y|e^{xy-\beta}α∣x∣=∣y∣exy−β, α,β∈N\alpha,\beta\in\mathbb{N}α,β∈N be the solution of the differential equation x dy−y dx+xy(x dy+y dx)=0x\,dy-y\,dx+xy(x\,dy+y\,dx)=0xdy−ydx+xy(xdy+ydx)=0, y(1)=2y(1)=2y(1)=2. Then α+β\alpha+\betaα+β is equal to _______ .

Correct answer: 4

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Q90·MathematicsNumerical
If ∫1(x−1)4(x+3)65 dx=A(αx−1βx+3)B+C\displaystyle\int\dfrac{1}{\sqrt[5]{(x-1)^4(x+3)^6}}\,dx=A\left(\dfrac{\alpha x-1}{\beta x+3}\right)^B+C∫5(x−1)4(x+3)6​1​dx=A(βx+3αx−1​)B+C, where C is the constant of integration, then the value of α+β+20AB\alpha+\beta+20ABα+β+20AB is _______ .

Correct answer: 7

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Chapters tested in this paper

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  • Properties of Solids and Liquids 172/186
  • Three Dimensional Geometry 176/186
  • Matrices and Determinants 180/186
  • Coordination Compounds 176/186
  • Sets, Relations and Functions 165/186
  • Current Electricity 160/186
  • Sequence and Series 164/186
  • p-Block Elements 164/186
  • Definite Integration 168/186
  • Rotational Motion 172/186
  • Redox Reactions and Electrochemistry 177/186
  • Geometrical Optics 172/186
  • Kinematics 156/186
  • Vector Algebra 173/186
  • Differential Equations 167/186
  • Probability 176/186
  • Permutations and Combinations 162/186
  • Magnetic Field of Current 147/186
  • Binomial Theorem and Its Simple Applications 158/186
  • Chemical Bonding and Molecular Structure 151/186
  • Application of Derivatives 139/186
  • Limits and Continuity 149/186
  • d- and f-Block Elements 126/186
  • Thermodynamics 154/186
  • Aldehydes and Ketones 135/186
  • Equilibrium 163/186
  • Solutions 158/186
  • Laws of Motion 130/186
  • Chemical Thermodynamics 165/186
  • Units and Measurements 149/186
  • Complex Numbers 165/186
  • Trigonometric Functions 144/186
  • Biomolecules 162/186
  • Chemical Kinetics 169/186
  • Gravitation 152/186
  • Electric Field and Coulomb's Law 133/186
  • Atomic Structure 161/186
  • Electronic Devices 145/186
  • Dual Nature of Matter and Radiation 155/186
  • Amines 133/186
  • Quadratic Equations 148/186
  • Work, Energy and Power 132/186
  • Wave Optics 130/186
  • Area Under Curves 139/186
  • Kinetic Theory of Gases 135/186
  • Alcohols and Ethers 106/186
  • Purification and Characterisation of Organic Compounds 116/186
  • Oscillations 117/186
  • Alternating Currents 108/186
  • Nuclei 116/186
  • Organic Compounds Containing Halogens 109/186
  • Straight Lines 114/186
  • Waves 109/186
  • Capacitors and Dielectrics 115/186
  • Statistics 118/186
  • Electronic Effects and Stability 74/186
  • Hyperbola 77/186
  • Indefinite Integration 66/186
  • Carboxylic Acids and Derivatives 54/186
  • Principles of Qualitative Analysis 58/186
  • Isomerism 51/186
  • Magnetism and Matter 50/186
  • IUPAC Nomenclature 37/186
  • Aromaticity 22/186
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