JEE Main DPP 11 December 2024: Daily practice problems for 2025 aspirants

JEE Main DPP 11 December 2024

JEE Main DPP 11 December 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 11 December 2024, including five questions from each subject: Mathematics, Physics, and Chemistry.

Also Read | NEET Daily Practice Questions 11 December 2024: DPP for 2025 aspirants

JEE Main DPP 11 December 2024: Physics

Candidates can check out the JEE Main DPP 11 December  2024 daily practice problems for 2025 aspirants from the Physics section:

Question 1: Which one of the following statements is not correct in the case of light emitting diodes?

A. It is a heavily doped p-n junction.

B. It emits light only when it is forward biased.

C. It emits light only when it is reverse biased.

D.The energy of the light emitted is equal to or slightly less than the energy gap of the semiconductor used.

Choose the correct answer from the options given below:

(1) C and D

(2) C

(3) B

(4) A

Answer (2)

Question 2: Which of the following are true?

A. Speed of light in vacuum is dependent on the direction of propagation.

B. Speed of light in a medium is independent of the wavelength of light.

C.  The speed of light is independent of the motion of the source.

D.  The speed of light in a medium is independent of intensity.

Choose the correct answer from the options given below:

(1) C and D only

(2) B and D only

(3) B and C only

(4) A and C only

Answer (1)

Question 3: If the height of transmitting and receiving antennas are 80 m each, the maximum line of sight distance will be:

Given: Earth’s radius = 6.4 × 106 m

(1) 64 km

(2) 36 km

(3) 28 km

(4) 32 km

Answer (1)

Question 4: Ratio of thermal energy released in two resistors R and 3R connected in parallel in an electric circuit is:

(1) 1 : 1

(2) 1 : 3

(3) 1 : 27

(4) 3 : 1

Answer (4)

Question 5: The threshold wavelength for photoelectric emission from a material is 5500 Å. Photoelectrons will be emitted, when this material is illuminated with monochromatic radiation from a

A.   75 W infra-red lamp

B.   10 W infra-red lamp

C.   75 W ultra-violet lamp

D.  10 W ultra-violet lamp

Choose the correct answer from the options given below:

(1) A and D only

(2) C only

(3) C and D only

(4) B and C only

Answer (3)

JEE Main DPP 11 December 2024: Chemistry

Candidates can check out the JEE Main DPP 11 December  2024 daily practice problems for 2025 aspirants from the Chemistry section:

Question 1: The magnetic behavior of Li2O, Na2O2 and KO2, respectively, are

(1)  Paramagnetic, paramagnetic and diamagnetic

(2)  Diamagnetic, diamagnetic and paramagnetic

(3) Paramagnetic, diamagnetic and paramagnetic

(4)  Diamagnetic, paramagnetic and diamagnetic

Answer (2)

Question 2: The bond dissociation energy is highest for

(1) Cl2

(2) I2

(3) F2

(4) Br2

Answer (1)

Question 3: Compound that will give positive Lassaigne’s test for both nitrogen and halogen is

(1) CH3NH2 HCl

(2) NH2OH HCl

(3) NH4Cl

(4) N2H4 HCl

Answer (1)

Question 4: Which of the following salt solutions would coagulate the colloid solution formed when FeCl3 is added to NaOH solution, at the fastest rate?

(1)  10 mL of 0.1 mol dm–3 Ca3(PO4)2

(2) 10 mL of 0.2 mol dm–3 AlCl3

(3) 10 mL of 0.1 mol dm–3 Na2SO4

(4)  10 mL of 0.15 mol dm–3 CaCl2

Answer (2)

Question 5: The increasing order of pKa for the following phenols is

(A) 2,4-Dinitrophenol

(B) 4-Nitrophenol

(C) 2,4,5-Trimethylphenol

(D) Phenol

(E)  3-Chlorophenol

Choose the correct answer from the option given below :

(1) (C), (E), (D), (B), (A)

(2) (C), (D), (E), (B), (A)

(3) (A), (E), (B), (D), (C)

(4) (A), (B), (E), (D), (C)

Answer (4)

JEE Main DPP 11 December 2024: Mathematics

Candidates can check out the JEE Main DPP 11 December 2024 daily practice problems for 2025 aspirants from Maths section:

Problem 1: A tangent and a normal are drawn at the point P(2, – 4) on the parabola y2 = 8x, which meet the directrix of the parabola at the points A and B respectively. If Q(a, b) is a point such that AQBP is a square, then 2a + b is equal to

(1) –18

(2)  –12

(3) –16

(4)  –20

Solution (3)

Problem 2: Let A be a fixed point (0, 6) and B be a moving point (2t, 0). Let M be the mid-point of AB and the perpendicular bisector of AB meets the y-axis at C. The locus of the mid-point P of MC is

(1) 3x2 + 2y – 6 = 0

(2) 2x2 + 3y – 9 = 0

(3) 3x2 – 2y – 6 = 0

(4) 2x2 – 3y + 9 = 0

Solution (2)

Problem 3: If x2 + 9y2 – 4x + 3 = 0, x, y Î R, then x and y respectively lie in the intervals

(1) [1, 3] and [1, 3]

(1) [-1/3, 1/3] and [-1/3, 1/3]

(1) [-1/3, 1/3]  and [1, 3]

(1) [1, 3] and [-1/3, 1/3]

Solution (4)

Problem 4: Equation of a plane at a distance (2/21)^½ from the origin, which contains the line of intersection of the planes x – y – z – 1 = 0 and 2x + y – 3z + 4 = 0, is :

(1) 4x – y – 5z + 2 = 0

(2) 3x – 4z + 3 = 0

(3) – x + 2y + 2z – 3 = 0

(4) 3x – y – 5z + 2 = 0

Solution (1)

Problem 5: The distance of the point (1, –2, 3) from the plane x – y + z = 5 measured parallel to a line, whose direction ratios are 2, 3, –6 is

(1) 2

(2) 5

(3) 1

(4) 3

Solution (4)