JEE Main DPP 12 November 2024: Daily practice problems for 2025 aspirants

JEE Main DPP 12 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 12 November 2024, including five questions from each subject: Mathematics, Physics, and Chemistry.

Also Read | NEET Daily Practice Questions 12 November 2024: DPP for 2025 aspirants

JEE Main DPP 12 November 2024: Physics

Candidates can check out the JEE Main DPP 12 November 2024 daily practice problems for 2025 aspirants from the Physics section: 

Question 1: A message signal of frequency 5 kHz is used to modulate a carrier signal of frequency 2 MHz. The bandwidth for amplitude modulation is:

(1) 5 kHz                  

(2) 2.5 kHz

(3) 10 kHz                 

(4) 20 kHz

Answer (3)

Question 2: A bowl filled with very hot soup cools from 98°C to 86°C in 2 minutes when the room temperature is 22°C. How long will it take to cool from 75°C to 69°C?

(1) 2 minutes            

(2) 1.4 minutes

(3) 0.5 minute            

(4) 1 minute

Answer (2)

Question 3: T is the time period of a simple pendulum on the earth's surface. Its time period becomes xT when taken to a height R (equal to earth's radius) above the earth's surface. Then, the value of x will be:

(1) 4                         

(2) 1/2

(3) 2

(4) 1/4

Answer (3)

Question 4: A Camot engine with efficiency 50% takes heat from a source at 600 K. In order to increase the efficiency to 70%, keeping the temperature of sink same, the new temperature of the source will be :

(1) 360 K                  

(2) 300 K

(3) 900 K                   

(4) 1000 K

Answer (2)

Question 5: An electromagnetic wave is transporting energy in the negative z direction. At a certain point and certain time the direction of the electric field of the wave is along a positive y direction. What will be the direction of the magnetic field of the wave at that point and instant?

(1)  Negative direction of x

(2)  Negative direction of y

(3)  Positive direction of z

(4)  Positive direction of x

Answer (4)

JEE Main DPP 12 November 2024: Chemistry

Candidates can check out the JEE Main DPP  12 November 2024 daily practice problems for 2025 aspirants from the Chemistry section: 

Question 1:  A cubic solid is made up of two elements X and Y. Atoms of X are present on every alternate corner and one at the center of the cube. Y is at 1/3 rd of the  total faces. The empirical formula of the compound is

(1)   XY2.5                           

(2) X1.5Y2

(3) X2Y1.5                         

(4) X2.5Y

Answer (No answer is correct)

Question 2: Reaction of thionyl chloride with white phosphorus forms a compound [A], which on hydrolysis gives [B], a dibasic acid. [A] and [B] are respectively

(1)  POCl3 and H3PO4  

(2) PCl3 and H3PO3

(3) PCl5 and H3PO4      

(4) P4O6 and H3PO3

Answer (2)

Question 3: ’25 volume’ hydrogen peroxide means

(1)  1 L marketed solution contains 250 g of H2O2.

(2)  100 mL marketed solution contains 25 g of H2O2.

(3)  1 L marketed solution contains 25 g of H2O2.

(4)  1 L marketed solution contains 75 g of H2O2.

Answer (4)

Question 4: Which of the following statements is incorrect for antibiotics?

(1)  An antibiotic should promote the growth or survival of  microorganisms.

(2)  An antibiotic is a synthetic substance produced as a structural analogue of a naturally occurring antibiotic.

(3)  An antibiotic should be effective in low concentrations.

(4)  An antibiotic must be a product of metabolism.

Answer (1)

Question 5: The correct order in aqueous medium of basic strength in case of methyl substituted amines is:

(1)  Me2NH > MeNH2 > Me3N > NH3

(2)  Me3N > Me2NH > MeNH2 >NH3

(3)  NH3 > Me3N > MeNH2 > Me2NH

(4)  Me2NH > Me3N > MeNH2 > NH3

Answer (1)

JEE Main DPP 12 November 2024: Mathematics

Candidates can check out the JEE Main DPP 12 November 2024 daily practice problems for 2025 aspirants from Maths section: 

Problem 1: The mean and variance of the marks obtained by the students in a test are 10 and 4 respectively. Later, the marks of one of the students was increased from 8 to 12. If the new mean of the marks is 10.2, then their new variance is equal to :

(1) 4.08

(2) 3.92

(3) 3.96

(4) 4.04

Solution (3)

Problem 2: The distance of the point P (4. 6, –2) from the line passing through the point (–3, 2, 3) and parallel to a line with direction ratios 3, 3, –1 is equal to

(1) 3     

(2) 2(3)^1/2

(3) 6      

(4) (14)^1/2

Solution (4)

Problem 3:The vector equation of a plane passing through (1,2,3) and perpendicular to the vector i+j+K is: 

(1) x+y+z=6

(2) x-y+z=6

(3) x+y-z=6

 (4) x+2y+3z=6

Solution (1)

Problem 4: If two dice are rolled, what is the probability that the sum of the numbers on the dice is 9 ?

(1) 1/9    

(2) 4/36

(3) 5/36

(4) 1/36

Solution (3)

Problem 5: The sum of the first 5 terms of a geometric progression is 31.5, and the common ratio is 3,  what is the first term?

(1) 1.5

(2) 2.5

(3) 3

(4) 5

Solution (2)

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