JEE Main DPP 23 November 2024: Daily practice problems for 2025 aspirants

JEE Main DPP 23 November 2024

JEE Main DPP 23 November 2024: JEE Main Session 1 2025 will take place from January 22 to 31. Applicants preparing for the exam must focus on practising the JEE Main sample papers. Hence, here are some daily practice questions with answers for JEE Main DPP 23 November 2024, including five questions from each subject: Mathematics, Physics, and Chemistry.

Also Read | NEET Daily Practice Questions 23 November 2024: DPP for 2025 aspirants

JEE Main DPP 23 November 2024: Physics

Candidates can check out the JEE Main DPP 23 November 2024 daily practice problems for 2025 aspirants from the Physics section:

Question 1: Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : Two metallic spheres are charged to the same potential. One of them is hollow and another is solid, and both have the same radii. Solid sphere will have lower charge than the hollow one.

Reason R: Capacitance of metallic spheres depend on the radii of spheres.

In the light of the above statements, choose the correct answer from the options given below:

(1) Both A and R are true but R is not the correct explanation of A

(2) A is false but R is true

(3) Both A and R are true but R is the correct explanation of A

(4) A is true but R is false

Answer (2)

Question 2: A coil is placed in a magnetic field such that the plane of the coil is perpendicular to the direction of the magnetic field. The magnetic flux through a coil can be changed:

A.  By changing the magnitude of the magnetic field within the coil.

B.  By changing the area of coil within the magnetic field.

C. By changing the angle between the direction of the magnetic field and the plane of the coil.

D. By reversing the magnetic field direction abruptly without changing its magnitude.

Choose the most appropriate answer from the options given below:

(1)  A and B only

(2) A, B and D only

(3) A and C only

(4) A, B and C only

Answer (4)

Question 3: Choose the correct statement about Zener diode

(1) It works as a voltage regulator only in forward bias

(2) It works as a voltage regulator in forward bias and behaves like a simple pn junction diode in reverse bias.

(3) It works as a voltage regulator in both forward and reverse bias.

(4) It works as a voltage regulator in reverse bias and behaves like a simple pn junction diode in forward bias.

Answer (4)

Question 4: An electron of a hydrogen like atom, having Z = 4, jumps from 4th energy state to 2nd energy state. The energy released in this process, will be:

(Given Rch = 13.6 eV)

Where R = Rydberg constant, c = Speed of light in vacuum, h = Planck’s constant)

(1) 3.4 eV

(2) 10.5 eV

(3) 40.8 eV

(4) 13.6 eV

Answer (3)

Question 5: A Carnot engine operating between two reservoirs has efficiency 1/3 . When the temperature of a cold reservoir is raised by x, its efficiency decreases to ⅙. The value of x, if the temperature of hot reservoir is 99°C, will be

(1) 66 K

(2) 33 K

(3) 62 K

(4) 16.5 K

Answer (3)

JEE Main DPP 23 November 2024: Chemistry

Candidates can check out the JEE Main DPP  23 November 2024 daily practice problems for 2025 aspirants from the Chemistry section:

Question 1: Which element is not present in Nessler’s reagent?

(1) Potassium

(2) Oxygen

(3) Mercury

(4) Iodine

Answer (2)

Question 2: The industrial activity held least responsible for global warming is

(1)  industrial production of urea

(2)  manufacturing of cement

(3)  steel manufacturing

(4)  electricity generation in thermal power plants

Answer (1)

Question 3: The starting material for convenient preparation of deuterated hydrogen peroxide (D2O2) in laboratory is

(1)  2-ethylanthraquinol

(2) BaO

(3) BaO2

(4) K2S2O8

Answer (4)

Question 4: Given below are two statements :

Statement I : Sulphanilic acid gives an esterification test for carboxyl group.

Statement II : Sulphanilic acid gives red colour in Lassigne's test for extra element detection.

In the light of the above statements, choose the most appropriate answer from the options given below :

(1)  Statement I is incorrect but Statement II is correct

(2)  Both Statement I and Statement II are incorrect

(3)  Statement I is correct but Statement II is incorrect

(4) Both Statement I and Statement II are correct

Answer (1)

Question 5: The complex cation which has two isomers is:

(1) [Co(NH3)5Cl]+

(2) [Co(H2O)6]3+

(3) [Co(NH3)5NO2]2+

(4) [Co(NH3)5Cl]2+

Answer (3)

JEE Main DPP 23 November 2024: Mathematics

Candidates can check out the JEE Main DPP 23 November 2024 daily practice problems for 2025 aspirants from Maths section:

Problem 1: The tangents at the points A(1,3) and B(1,-1) on the parabola y^2-2x-2y=1 meet at the point A. Then the area of the triangle PAB is

(1) 4

(2)  6

(3)  7

(4)  8

Solution (4)

Problem 2 : A Plane E is perpendicular to the two planes 2x-2y+z=0 and x-y+2z=4, and passes through the point P(1,-1,1). If the distance of the plane E from the point Q(a,a,2) is 3(2)^½ then (PQ)^2 is equal to

(1) 9

(2) 12

(3) 21

(4) 33

Solution (3)

Problem 3: If the mean deviation about median for the number 3, 5, 7, 2k, 12, 16, 21, 24 arranged in the ascending order, is 6 then the median is

(1) 11.5

(2) 10.5

(3) 12

(4) 11

Solution (4)

Problem 4: The sum of the maximum and minimum values of the function f(x)=|5x-7|+|x^2+2x| in the interval [5/2,4], where [t] is the greatest integer value of t<= ___ is

(1) 14

(2) 15

(3) 16

(4) 17

Solution (2)

Problem 5: 8 persons have to travel from A to B in 3 allotted cars. If a car can carry a maximum of 3 persons. Then find the number of ways they can travel.

(1) 1880

(2) 1800

(3) 1680

(4) 1600

Solution (3)