JEE Main DPP 9 November 2024: Daily practice problems for 2025 aspirants

JEE Main DPP 9 November 2024

JEE Main DPP 9 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 9 November 2024, including five questions from each subject: Mathematics, Physics, and Chemistry.

Also Read | NEET Daily Practice Questions 9 November 2024: DPP for 2025 aspirants

JEE Main DPP 9 November 2024: Physics

Candidates can check out the JEE Main DPP 9 November 2024 daily practice problems for 2025 aspirants from the Physics section:

Question 1: The weight of a body at the surface of earth is 18 N. The weight of the body at an altitude of 3200 km above the earth’s surface is (given, radius of earth Re = 6400 km):

(1) 8 N

(2) 19.6 N

(3) 9.8 N

(4) 4.9 N

Answer (1)

Question 2: Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : Photodiodes are preferably operated in reverse bias condition for light intensity measurement.

Reason R : The current in the forward bias is more than the current in the reverse bias for a p – n junction diode.

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

(1) Both A and R are true and R is the correct

(2)  A is false but R is true

(3)  A is true but R is false

(4)  Both A and R are true but R is NOT the correct explanation of A

Answer (4)

Question 3: Given below are two statements :

Statement I : The temperature of a gas is –73°C. When the gas is heated to 527°C, the root mean square speed of the molecules is doubled.

Statement II : The product of pressure and volume of an ideal gas will be equal to translational kinetic energy of the molecules.

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

(1)  Both statement I and statement II are true

(2)  Statement I is false but statement Il is true

(3)  Both statement I and statement II are false

(4)  Statement I is true but statement II is false

Answer (4)

Question 4: Two long straight wires P and Q carrying equal current 10A each were kept parallel to each other at 5 cm distance. Magnitude of magnetic force experienced by 10 cm length of wire P is F1. If distance between wires is halved and currents on them are doubled, force F2 on 10 cm length of wire P will be:

(1) 10F1

(2) 8F1

(3) F1 /10

(4) F1/ 8

Answer (2)

Question 5: The maximum vertical height to which a man can throw a ball is 136 m. The maximum horizontal distance upto which he can throw the same ball is:

(1) 272 m

(2) 68 m

(3) 192 m

(4) 136 m

Answer (1)

JEE Main DPP 9 November 2024: Chemistry

Candidates can check out the JEE Main DPP  9 November 2024 daily practice problems for 2025 aspirants from the Chemistry section:

Question 1: Given below are two statements:

Statement I : Noradrenaline is a neurotransmitter.

Statement II : Low level of noradrenaline is not the cause of depression in humans.

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

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

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

(3) Both statement I and Statement II are incorrect

(4)  Both statement I and Statement II are correct

Answer (1)

Question 2: Reaction of BeO with ammonia and hydrogen fluoride gives A which on thermal decomposition gives BeF2 and NH4F. What is ‘A’?

(1)  H3NBeF3

(2) (NH4)BeF3

(3) (NH4)Be2F5

(4) (NH4)2BeF4

Answer (4)

Question 3: In the depression of freezing point experiment

A. Vapour pressure of the solution is less than that of pure solvent

B.  Vapour pressure of the solution is more than that of pure solvent

C.  Only solute molecules solidify at the freezing point

D.  Only solvent molecules solidify at the freezing point

Choose the most appropriate answer from the options given below:

(1) A and D only

(2) B and C only

(3) A only

(4) A and C only

Answer (1)

Question 4: The primary and secondary valencies of cobalt respectively in [Co(NH3)5CI]Cl2 are :

(1) 3 and 5

(2) 2 and 6

(3) 2 and 8

(4) 3 and 6

Answer (4)

Question 5: Which of the following is true about freons?

(1)  These are chemicals causing skin cancer

(2)  These are radicals of chlorine and chlorine monoxide

(3)  All radicals are called freons

(4)  These are chlorofluorocarbon compounds

Answer (4)

JEE Main DPP 9 November 2024: Mathematics

Candidates can check out the JEE Main DPP 9 November 2024 daily practice problems for 2025 aspirants from Maths section:

Problem 1: In how many ways can a committee of 3 members be formed into a group of 10 people?

(1) 650

(2) 150

(3) 120

(4) 720

Solution (3)

Problem 2: In a set of numbers, the mean is 10 and the sum of the squared deviations from the mean is 80. What is the variance of the data set?

(1) 20

(2) 16

(3) 10

(4) 40

Solution (2)

Problem 3: A triangle has sides of lengths 7 cm, 8 cm, and 9 cm. What is its area using Heron’s formula?

(1) 26 cm^2

(2) 24 cm^2

(3) 28 cm^2

(4) 30 cm^2

Solution (1)

Problem 4: A coin is tossed 5 times. What is the probability of getting exactly two tails?

(1) 1/16

(2) 2/16

(3) 5/16

(4) 1/2

Solution (3)

Problem 5: The sum of the first 15 terms of an arithmetic progression is 330, and the first term is 5 and the common difference is 3, then the 15 th term is?

(1) 50

(2) 47

(3) 40

(4) 35

Solution (2)