JEE Main DPP 24 November 2024: Daily practice problems for 2025 aspirants

JEE Main DPP 24 November 2024

JEE Main DPP 24 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 24 November 2024, including five questions from each subject: Mathematics, Physics, and Chemistry.

JEE Main DPP 24 November 2024: Physics

Candidates can check out the JEE Main DPP 24 November 2024 daily practice problems for 2025 aspirants from the Physics section:

Question 1: Considering a group of positive charges, which of the following statements is correct?

(1)  Net potential of the system cannot be zero at a point but net electric field can be zero at that point.

(2)  Both the net potential and the net field can be zero at a point.

(3)  Net potential of the system at a point can be zero but net electric field can’t be zero at that point.

(4) Both the net potential and the net electric field cannot be zero at a point.

Answer (1)

Question 2: A stone of mass 1 kg is tied to the end of a massless string of length 1m. If the breaking tension of the string is 400 N, then maximum linear velocity, the stone can have without breaking the string, while rotating in horizontal plane, is:

(1) 40 ms–1

(2) 10 ms–1

(3) 20 ms–1

(4) 400 ms–1

Answer (3)

Question 3: The number of turns of the coil of a moving coil galvanometer is increased in order to increase current sensitivity by 50%. The percentage change in voltage sensitivity of the galvanometer will be:

(1) 0%

(2) 100%

(3) 75%

(4) 50%

Answer (1)

Question 4: Given below are two statements:

Statement I : In a typical transistor, all three regions emitter, base, and collector have the same doping level.

Statement II: In a transistor, the collector is the thickest and base is the thinnest segment.

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

(1)  Statement I is false but Statement II is true

(2)  Statement I is true but Statement II is false

(3)  Both Statement I and Statement II are false

(4)  Both Statement I and Statement II are true

Answer (3)

Question 5: The radius of the electron's second stationary orbit in Bohr's atom is R. The radius of 3rd orbit will be

(1) R/3

(2) 2.25 R

(3) 9R

(4) 3R

Answer (2)

JEE Main DPP 24 November 2024: Chemistry

Candidates can check out the JEE Main DPP 24 November 2024 daily practice problems for 2025 aspirants from the Chemistry section:

Question 1: The Lewis acid character of boron tri halides follows the order

(1)  BBr3 > BI3 > BCI3 > BF3

(2)  BCI3 > BF3 > BBr3 > BI3

(3)  BI3 > BBr3 > BCI3 > BF3

(4)  BF3 > BCI3 > BBr3 > BI3

Answer (3)

Question 2: A hydrocarbon ‘X’ with formula C6H8 uses two moles H2 on catalytic hydrogenation of its one mole. On ozonolysis, ‘X’ yields two moles of methane dicarbaldehyde. The hydrocarbon ‘X’ is

(1) hexa –1, 3, 5–triene

(2) cyclohexa – 1, 3 – diene

(3) cyclohexa – 1, 4 – diene

(4) 1 – methylcyclopenta – 1, 4 – diene

Answer (3)

Question 3: In the following halogenated organic compounds the one with maximum number of chlorine atoms in its structure is

(1) Chloropicrin

(2) Freon – 12

(3) Gammaxene

(4) Chloral

Answer (3)

Question 4: Which of the following elements have half-filled f-orbitals in their ground state?

(Given : atomic number Sm = 62; Eu = 63; Tb = 65; Gd = 64, Pm = 61)

(A) Sm

(B) Eu

(C) Tb

(D) Gd

(E) Pm

Choose the correct answer from the options given below:

(1) A and E only

(2) B and D only

(3) C and D only

(4) A and B only

Answer (2)

Question 5: Which of the following compounds are not used as disinfectants?

(A) Chloroxylenol

(B) Bithional

(C) Veronal

(D) Prontosil

(E) Terpineol

Choose the correct answer from the options given below:

(1) A, B

(2) C, D

(3) A, B, E

(4) B, D, E

Answer (2)

JEE Main DPP 24 November 2024: Mathematics

Candidates can check out the JEE Main DPP 24 November 2024 daily practice problems for 2025 aspirants from Maths section:

Problem 1: Let the plane P pass through the intersection of the planes 2x + 3y – z = 2 and x + 2y + 3z = 6, and be perpendicular to the plane 2x + y – z + 1 = 0. If d is the distance of P from the point (–7, 1,1), then d^2 is equal to :

(1) 25/83

(2)  15/53

(3)  250/82

(4)  250/83

Solution (4)

Problem 2: The number of integral values of k, for which one root of the equation 2x^2– 8x + k = 0 lies in the interval (1, 2) and its other root lies in the interval (2, 3) is

(1) 1

(2) 2

(3) 3

(4) 0

Solution (1)

Problem 3: If the x-intercept of a focal chord of the parabola y^2 = 8x + 4y + 4 is 3, then the length of the chord is equal to

(1) 14

(2) 16

(3) 18

(4) 20

Solution (2)

Problem 4: Let ax + by + cz = 1 be the equation of a plane passing through the point (3, –2, 5) and perpendicular to the line joining the points (1, 2, 3) and (–2, 3, 5). Then the value of abc is equal to

(1) 4

(2) 8

(3) 6

(4)10

Solution (3)

Problem 5: Number of integral solutions to the equation x + y + z = 21, where x >=1, y >= 3, z >= 4 , is equal to

(1) 105

(2) 110

(3) 115

(4) 120

Solution (1)