JEE Main 7 January 2025 Daily Practice Questions for Exam Day: Physics, Chemistry, Maths DPP

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JEE Main 7 January 2025 Daily Practice Questions for Exam Day: The JEE Main 2025 Exam is just around the corner. To maximise the candidate’s chances of success, valuable source of JEE Main 7 January 2025 Daily Practice Questions for Exam Day with Physics, Chemistry, and Maths important questions are provided below. By incorporating these questions into your study routine, candidates can test their understanding, sharpen problem-solving skills, and boost their confidence. By solving the JEE Main 2025 Daily Practice Questions, candidates can identify areas for improvement and develop the speed and accuracy essential for excelling in the JEE Main.

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JEE Main 7 January 2025 Daily Practice Questions for Exam Day

Candidates can go through the JEE Main 7 January 2025 Physics, Chemistry, Maths Daily Practice Questions for Exam Day below.

JEE Main 7 January 2025 Physics Daily Practice Questions for Exam Day

Ques 1: Water droplets are coming from an open tap at a particular rate. The spacing between the droplets is observed at the 4th second after it falls to the next droplet 34.3m. At what rate droplets are coming from the tap?

1 drop / 7 seconds
3 drop / 2 seconds
2 drop / second
1 drop / second

Answer: 4

Ques 2: A particle of mass 4M at rest disintegrates into two particles of mass M and 3M respectively having non-zero velocities. The ratio of the de-Brogile wavelength of particles of mass M to that of mass 3M will be?

Answer : 3

Ques 3: Calculate the ratio of escape velocities for two celestial bodies: one with a mass 16 times that of Earth and a radius 4 times that of Earth, and the other being Earth itself.

Answer: 1

Ques 4: A body of mass 2kg moving with a speed of 4m/s makes an elastic collision with another body at rest and continues to move in the original direction but at 1/4th of its initial speed. The speed of the two body centres of mass is x/10m/s. Then the value of X is?

Answer: 2

Ques 5: A ray of laser of a wavelength of 630nm is incident at an angle of 30 degrees at the diamond air interface. It is going from diamond to air. The refractive index of air is 1 and of diamond is 2.42. Choose the correct option.

Refraction is not possible
The angle of refraction is 30 degree
The angle of refraction is 24.41 degree
The angle of refraction is 53.4degree

Answer: 1

JEE Main 7 January 2025 Chemistry Daily Practice Questions for Exam Day

Ques 1: In the leaching of Alumina from Bauxite, the ore expected to leach out in the process by reacting with NaOH is:

TiO2
ZnO
SiO2
Fe203

Answer: 3

Ques 2: Which of the following chemical agents is not used for dry-cleaning clothes?

H2O2
Liquid CO2
CCI4
CI2C=CCI2

Answer: 3

Ques 3: What chemical reaction is primarily prevented by avoiding prolonged heating of ferrous ammonium sulfate?

Hydrolysis
Oxidation
Breaking
Reduction

Answer: 2

Ques 4: What compound is indicated by the formation of a red precipitate in Benedict's test?

Sucrose
DNA
Glucose
RNA

Answer: 3

Ques 5: The water-soluble protein is:

Albumin
Myosin
Collagen
Fibrin

Answer: 1

JEE Main 7 January 2025 Maths Daily Practice Questions for Exam Day

Ques 1: Consider three observations a, b, and c such that b=a+c. If the standard deviation of a+2, b+2, and c+2 is d, then which of the following is true?

b2= a2 + c2 + 3d2
b2= 3(a2 + c2) - 9d2
b2= 3(a2 + c2) + 9d2
b2= 3(a2 + c2 + d2)

Answer: 2

Ques 2: A pack of cards has one card missing. Two cards are drawn randomly and are found to be spades. The probability that the missing card is not a spade is:

55/827
22/425
¾
39/50

Answer: 4

Ques 3: How many unique 7-digit permutations can be created from the set of digits {1, 2, 3, 4, 5, 6, 7} while excluding any arrangements that contain the subsequences "154" or "2367"?

4896
4897
4899
4898

Answer: 4

Ques 4: In a geometric progression consisting of three terms, a1, a2, and a5, the mean is 31/10, and the variance is m/n. If the average of the reciprocals of these terms is 3140, find the value of m + n.

Answer: 2

Ques 5: Given that the ratio of three consecutive terms within the binomial expansion of (1+x)^(n+2) follows the pattern 1:3:5, find the sum of these three terms.

Answer: 2

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