JEE Main Question Paper 29 January 2025 (Available) LIVE Updates: Shift 1 memory-based questions with answer key
The memory-based JEE Main Question Paper 29 January 2025 for Shift 1 and Shift 2 along with the answer keys can be checked here. Download JEE Main today's paper for Physics, Chemistry, and Mathematics subejcts here.
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JEE Main Question Paper 29 January 2025: The last day of JEE Mains 2025 Session 1 Paper is being conducted on January 29, with two shifts conducted in the morning and afternoon. The National Testing Agency (NTA) organized the exam in Paper 1 (B.Tech) CBT mode across various test centres nationwide for 5 days (10 shifts) with Paper 2 (for B.Arch and B.Plan) is going to be held on January 30. As candidates eagerly await the official release of the question papers and answer keys, we bring you live updates on memory-based questions and solutions of JEE Main 2025 January 29 Shift 1 and 2. This analysis is based on feedback from candidates and insights from subject matter experts.
The memory-based questions for both shifts, along with their unofficial answer keys, are being provided by various reputed coaching institutes. These resources help candidates assess their performance and estimate their probable scores.
Toughest Shift of JEE Main January 2025 (Session 1) | Easiest Shift of JEE Main January 2025 (Session 1) |
JEE Main Question Paper 29 January 2025 Shift 1
Candidates can access subject-wise questions along with the unofficial answer key solutions for the morning session Day 1 Paper 1 (B.Tech) exam below-
JEE Main Today's Shift 1 Physics Paper
- Assertion: At the peak of mountain, time period of pendulum increases
Reason: Time period of pendulum increases with decrease in g - The velocity of a particle moving on a straight line varies with time as v=At2 Bt/C+ t1 where A, B, and C are constants. Find the dimension of ABC.
- A pendulum of mass m/2 is released from a given situation. Find the speed of another pendulum after the collision. (e=1)
- The graph between wavelength (λ)of incident light and Kinetic Energy (K.E) of photoelectron in photoelectric effect is
- Identify the logic gate represented by circuit shown below.
JEE Main Today's Shift 1 Chemistry Paper
- Which of the following is animal starch?
- Statement-1: Correct order of ionic radius for Mg2+, Na+, O2- & F-is F-> O2-> Na+ > Mg2+
Statement-2: Correct order of magnitude of gain Enthalpy for 17th group follows order CI > F > Br > I (Magnitude only) - Calculate the total number of sigma and π bond in the given molecule?
- Chromite ore + Na2CO3 + O2 → insoluble product containing Fe.
Calculate the molar mass of insoluble product formed. (Given: Molar mass of Cr = 52 g/mol, Na = 23 g/mol, Fe = 56 g/mol, 0 = 16 g/mol) - Consider the following complexes-
1. [Mn(CN)6]4-
2. [Fe(CN)6]4-
3. [Fe(CN)6]3-
4. [Co(CN)6]3-
Correct order of CFSE (Δ0) will be
JEE Main Today's Shift 1 Mathematics Paper
- The minimum value of n for which the number of integer terms in the binomial expansion of (71/3 + 111/2) is 183, is
- lim (n→0) ∑ (k = 1 to n) [(k3 + 6k2 + 11k +5)/(k + 3)! = ?
- Sum of first three terms of an AP with integral common difference is 54 and sum of first twenty terms lies between 1600 to 1800, find a11.
- Area enclosed by y ≥ |x - 1|, y + |x| ≤ 3, x2 ≤ 2y - 3 is A, then 6A is (in sq. units)
- Find I = 80 0∫π/2 [(sinx + cosx) / (9sinx + 16cosx)]dx
Check More: JEE Main 2025 January 29 Mathematics Question Paper with Answer Key Solutions (Available)
Also download | JEE Main Question Paper January 2025 (All days and shifts)
JEE Main Question Paper 29 January 2025 Shift 2
For the afternoon session, examinees can access the memory-based questions for Physics, Chemistry, and Mathematics along with the answer key solutions below.
JEE Main Today's Shift 2 Physics Paper
- An equiconvex lens is cut into two ways as shown. If the focal length of the parts are as mentioned in the diagram. Find L1/L2
- A solenoid of radius 10 cm carrying current 0.29 A and having total 200 turns. If magnetic field inside solenoid is 2.9 x 10-9 Find length of solenoid
- Three identical particles, each of mass m move under the influence of mutual attraction forces. Initially they are on the vertices of an equipotential triangle of side 'a' and have equal speed v direct towards the adjacent particles as shown. The net angular momentum about the centre just before collision is
- Two particles of same mass are performing SHM vertically with two different springs of spring constants K1 and K2. If amplitude of both is same. Find ratio of the maximum speed of two particles.
- A physical quality Q is given as Q = ab4/cd, if the percentage error is a,b,c and d are 2%, 1%, 2% and 1% the % error in Q will be
Check More: JEE Main 2025 January 29 Shift 1 Physics Question Paper with Answer Key Solutions (Available)
JEE Main Today's Shift 2 Chemistry Paper
- Which of the following form most stable carbocation?
- Number of σ and π bonds respectively in hex-1-en-4-yne are
- 0.41 g of BaSO4 is obtained from 0.2 g of organic compound in Carius method. What is the percentage of sulphur present in organic compound?
- Which element in group 15 has the lowest Ionisation energy?
- The number of benzenoid structural isomers having molecular formula C9H12 which do not give Baeyer's reagent test is?
JEE Main Today's Shift 2 Mathematics Paper
- If the letters of the word "KANPUR" are arranged in dictionary, then the 440th word is
- If 3107 is divided by 23, then remainder is
- Let aij = (√2)i+j, A = [aij]3x3 If sum of third row of A2 is α + β√2, then α + βis
- Let f(x) = 0∫x t(t2 - 3t + 20) dt, x ∈ (1, 3) and range of f(x) is (α, β), then α + β is equal to
- lim (x→0) [ cosecx ((2cos2x + 3cosx)1/2 - (cos2x + sinx + 4)1/2 ] = ?
While these resources provide a fair estimate of performance, students should wait for the official answer key by NTA for accurate score calculations. The official key is expected to be released within a week, followed by a provisional results announcement.
Important Links |
Upcoming Important Dates of JEE Mains 2025 Session 1
Event | Link for Expected/ Official Dates |
Response Sheet | JEE Main Response Sheet January 2025 Expected Release Date |
Answer Key | JEE Main Answer Key January 2025 Expected Release Date |
Result | JEE Main Result Date January 2025 |
JEE Main Question Paper 29 January 2025 LIVE Updates: Shift 1, 2 memory-based questions with answer key
Jan 30, 2025 05:30 AM IST
JEE Main Question Paper 29 January 2025 Shift 2 Subject-Wise Q3
Physics Ques: Assertion: On increasing the pressure, the volume decrease is more in an isothermal process than in an adiabatic process.
Reason: Adiabatic process is given by PV-1Physics Ans: Assertion is correct and Reason is correct
Chemistry Ques: Which of the following is an essential amino acid?
Chemistry Ans: Valine
Mathematics Ques: Let the line L be (x - 1)/1 = (y - 4)/3 = (z - 7)/5 = λ and foot of perpendicular from (1, -2, -1) to L is (α, β, γ), then find the value of α + β + γ.
Mathematics Ans: -102/35
Jan 30, 2025 05:00 AM IST
JEE Main Question Paper 29 January 2025 Shift 1 Subject-Wise Q3
Physics Ques: Which of two physical quantities have same dimensions?
Physics Ans: Angular momentum and Planck's constant
Chemistry Ques: The correct order of melting point of d-block elements is:
Chemistry Ans: Fe > Mn
Mathematics Ques: If z1 lies on | z - 8 + 2i | = 1 and z2 lies on | z - 2 - 6i | = 2, then | z1 - z2 |min is (where i = √-1)
Mathematics Ans: 7Jan 30, 2025 04:30 AM IST
JEE Main Question Paper 29 January 2025 Shift 2 Mathematics Q2
Ques: If the exhaustive values of a for which the equation 2x2 + (a - 5)x + 15 = 3a has no real roots is (α, β), then 14(α + β) | is equal to
Ans: 56
Jan 30, 2025 04:00 AM IST
JEE Main Question Paper 29 January 2025 Shift 2 Chemistry Q2
Ques: Consider the following thermochemical reactions and choose the correct option.
C(diamond) → C(graphite) + x KJ
C(diamond) + O2 → CO2 + y KJ
C(graphite) + O2 → CO2 + z KJAns: x = y - z
Jan 30, 2025 03:30 AM IST
JEE Main Question Paper 29 January 2025 Shift 2 Physics Q2
Ques: Two planet A and B are revolving around a massive start such that rA = 2rB and mA = 4√3 mB Find ratio of angular momentum of planet B to planet A.
Ans: 1/ 2√3Jan 30, 2025 03:00 AM IST
JEE Main Question Paper 29 January 2025 Shift 2 Mathematics Q1
Ques: Area enclosed between the curves |y| = 1 - x2 and x2 + y2 = 1 is (π - α) sq. units, then 9α is
Ans: 24
Jan 30, 2025 02:30 AM IST
JEE Main Question Paper 29 January 2025 Shift 2 Chemistry Q1
Ques: Which of the following will give azo dye test?
Ans: Aniline
Jan 30, 2025 02:00 AM IST
JEE Main Question Paper 29 January 2025 Shift 2 Physics Q1
Ques: A capacitor C1= 6μF, initially charged with a call of emf 5V is disconnected and connected to another capacitor C2= 6μF, which is initially neutral. The charges on C1 and C2 after connection are
Ans: 10μc, 20μc
Jan 30, 2025 01:30 AM IST
JEE Main Question Paper 29 January 2025 Shift 2: CollegeDekho Overall Difficulty Rating
Based on the initial feedback received by the candidates, the overall difficulty level of Shift 2 was 6.06.
Jan 30, 2025 01:00 AM IST
JEE Main Question Paper 29 January 2025 Shift 2: CollegeDekho Difficulty Rating for Mathematics
The CollegeDekho difficulty rating for Mathematics in JEE Main 29 January Question Paper 2025 is 7.8.
Jan 30, 2025 12:30 AM IST
JEE Main Question Paper 29 January 2025 Shift 2: CollegeDekho Difficulty Rating for Chemistry
The CollegeDekho difficulty rating for Chemistry in JEE Main 29 January Question Paper 2025 is 6.4.
Jan 30, 2025 12:00 AM IST
JEE Main Question Paper 29 January 2025 Shift 2: CollegeDekho Difficulty Rating for Physics
The CollegeDekho difficulty rating for Physics in JEE Main 29 January Question Paper 2025 is 4.
Jan 29, 2025 11:30 PM IST
JEE Main Question Paper 29 January 2025: Expected Number of Good Attempts (Shift 2)
The expected number of good attempts in JEE Main Shift 2 Question Paper 29 January 2025 is 44 to 51.
Jan 29, 2025 11:00 PM IST
JEE Main Question Paper 29 January 2025: Was the Shift 2 paper time-consuming?
According to the reviews submitted by the candidates, the Shift 2 paper was time-consuming as Chemistry consisted of a lot of concept-based questions, and the Mathematic section was quite calculative.
Jan 29, 2025 10:30 PM IST
JEE Main Question Paper 29 January 2025: Mathematics High Weightage Topics (Shift 2)
The high-weightage topics from Shift 2 Mathematics were as follows:
- Conic Section
- 3D Vector
- Matrices and Determinants
- Straight Line
- Complex Numbers
Jan 29, 2025 10:00 PM IST
JEE Main Question Paper 29 January 2025: Chemistry High Weightage Topics (Shift 2)
The high-weightage topics from Shift 2 Chemistry were as follows:
- Chemical Kinetics
- Coordination Compound
- Biomolecules
- GOC
- d and f Block Elements
Jan 29, 2025 09:40 PM IST
JEE Main Question Paper 29 January 2025: Physics High Weightage Topics (Shift 2)
The high-weightage topics from Shift 2 Physics were as follows:
- Modern Physics
- Ray Optics
- Electrostatics
- Capacitor
- Thermodynamics
Jan 29, 2025 09:20 PM IST
JEE Main Question Paper 29 January 2025: Difficulty Level of Mathematics (Shift 2)
Based on the initial feedback received by the candidates, the difficulty level of Shift 1 Mathematics was Moderate.
Jan 29, 2025 09:00 PM IST
JEE Main Question Paper 29 January 2025: Difficulty Level of Chemistry (Shift 2)
Based on the initial feedback received by the candidates, the difficulty level of Shift 1 Chemistry was Moderate.
Jan 29, 2025 08:40 PM IST
JEE Main Question Paper 29 January 2025: Difficulty Level of Physics (Shift 2)
Based on the initial feedback received by the candidates, the difficulty level of Shift 2 Physics was Easy to Moderate.
Jan 29, 2025 08:20 PM IST
JEE Main Question Paper 29 January 2025 Shift 1 Mathematics Q2
Ques: The number of 7 digit numbers made with the digits 1, 2, 3 such that sum of the digits is 11 is equal to
Ans: 16
Jan 29, 2025 08:00 PM IST
JEE Main Question Paper 29 January 2025 Shift 1 Chemistry Q2
Ques: Find the order of the reaction
A+B → F
if the mechanism of the reaction is given below:
Step 1: A + B → D (slow)
Step 2: D→C + E (fast)
Step 3: C+E → F (fast)
Ans: 2
Jan 29, 2025 07:40 PM IST
JEE Main Question Paper 29 January 2025 Shift 1 Physics Q2
Ques: A river is flowing with speed 9km/hr. Boat is going downstream-speed of boat in still water is 27km/hr. A person in boat throws a ball upwards with speed 10 m/s. Find range of the ball as seen by an observer at bank of river.
Ans: 20 m
Jan 29, 2025 07:20 PM IST
JEE Main Question Paper 29 January 2025 Shift 1 Mathematics Q1
Ques: If R be a relation defined on (0, π/2) such that xRy sec2x - tan2y = 1, then the relation R is
Ans: Reflexive and transitive only
Jan 29, 2025 07:00 PM IST
JEE Main Question Paper 29 January 2025 Shift 1 Chemistry Q1
Ques: What is the value of van't Hoff Factor for A2B if 30% of A2B is dissociated?
Ans: 1.60 19 PM
Jan 29, 2025 06:40 PM IST
JEE Main Question Paper 29 January 2025 Shift 1 Physics Q1
Ques: Statement I: Electromagnetic wave have both energy and momentum.
Statement II: Rest mass of photon is zero.
Ans: Statement I is correct Statement II is incorrect
Jan 29, 2025 06:20 PM IST
JEE Main Question Paper 29 January 2025 Shift 1: CollegeDekho Overall Difficulty Rating
Based on the initial feedback received by the candidates, the overall difficulty level of Shift 1 was 6.0.
Jan 29, 2025 06:00 PM IST
JEE Main Question Paper 29 January 2025: Shift 2 Ends
The final shift of JEE Main 2025 Session 1 examination has concluded. Stay tuned for question paper analysis, and to know the memory-based question, and unofficial answers for the same.
Jan 29, 2025 05:40 PM IST
JEE Main Question Paper 29 January 2025 Shift 1: CollegeDekho Difficulty Rating for Mathematics
The CollegeDekho difficulty rating for Mathematics in JEE Main 29 January Question Paper 2025 is 8.3.
Jan 29, 2025 05:20 PM IST
JEE Main Question Paper 29 January 2025 Shift 1: CollegeDekho Difficulty Rating for Chemistry
The CollegeDekho difficulty rating for Chemistry in JEE Main 29 January Question Paper 2025 is 5.4.
Jan 29, 2025 05:00 PM IST
JEE Main Question Paper 29 January 2025 Shift 1: CollegeDekho Difficulty Rating for Physics
The CollegeDekho difficulty rating for Physics in JEE Main 29 January Question Paper 2025 is 4.4.
Jan 29, 2025 04:40 PM IST
JEE Main Question Paper 29 January 2025: Expected Number of Good Attempts (Shift 1)
The expected number of good attempts in JEE Main Shift 1 Question Paper 29 January 2025 is 49 to 53.
Jan 29, 2025 04:20 PM IST
JEE Main Question Paper 29 January 2025: Was the Shift 1 paper time-consuming?
According to the reviews submitted by the candidates, Shift 1 paper was not much time-consuming, except for the Mathematics section.
Jan 29, 2025 04:00 PM IST
JEE Main Question Paper 29 January 2025: Mathematics High Weightage Topics (Shift 1)
The high-weightage topics from Shift 2 Mathematics were as follows:
- 3D Vector
- Conic Section
- Integration
- Straight Line and Circle
- Differential Calculus
Jan 29, 2025 03:40 PM IST
JEE Main Question Paper 29 January 2025: Chemistry High Weightage Topics (Shift 1)
The high-weightage topics from Shift 1 Chemistry were as follows:
- Biomolecules
- Chemical Bonding
- Mole Concept
- Named Reactions
Jan 29, 2025 03:20 PM IST
JEE Main Question Paper 29 January 2025: Physics High Weightage Topics (Shift 1)
The high-weightage topics from Shift 2 Physics were as follows:
- Ray Optics
- Electrostatics
- Modern Physics
- Projectile
- Vertical Motion
- Kinematics
- Units and Dimensions
- Magnetic Effects of Current
Jan 29, 2025 03:00 PM IST
JEE Main Question Paper 29 January 2025: Shift 2 Starts
Shift 2 or the final shift of JEE Main 2025 Session 1 examination has started. The shift will end at 6 PM.
Jan 29, 2025 02:30 PM IST
JEE Main Question Paper 29 January 2025: Difficulty Level of Mathematics (Shift 1)
Based on the initial feedback received by the candidates, the difficulty level of Shift 1 Mathematics was Moderate to Tough.
Jan 29, 2025 02:15 PM IST
JEE Main Question Paper 29 January 2025: Difficulty Level of Chemistry (Shift 1)
Based on the initial feedback received by the candidates, the difficulty level of Shift 1 Chemistry was Moderate.
Jan 29, 2025 02:00 PM IST
JEE Main Question Paper 29 January 2025: Difficulty Level of Physics (Shift 1)
Based on the initial feedback received by the candidates, the difficulty level of Shift 1 Physics was Easy to Moderate.
Jan 29, 2025 01:45 PM IST
JEE Main Question Paper 29 January 2025: Expected Percentile Score for 100 to 130 Marks
Marks Percentile 130 marks 95.18+ percentile 120 marks 93.9+ percentile 110 marks 92.28+ percentile Jan 29, 2025 01:30 PM IST
JEE Main Question Paper 29 January 2025: Expected Percentile Score for 140 to 160 Marks
Marks Percentile 160 marks 97.74+ percentile 150 marks 97.08+ percentile 140 marks 96.2+ percentile Jan 29, 2025 01:15 PM IST
JEE Main Question Paper 29 January 2025: Expected Percentile Score for 170 to 190 Marks
Marks Percentile 190 Marks 99.09+ percentile 180 Marks 98.72+ percentile 170 Marks 98.28+ percentile Jan 29, 2025 01:00 PM IST
JEE Main Question Paper 29 January 2025: Expected Percentile Score for 200 to 220 Marks
Marks Percentile 220 Marks 99.66+ Percentile 210 Marks 99.52+ Percentile 200 Marks 99.32+ Percentile Jan 29, 2025 12:45 PM IST
JEE Main Question Paper 29 January 2025: Expected Percentile Score for 230 to 250 Marks
Marks Percentile 250 Marks 99.99+ Percentile 240 Marks 99.84+ Percentile 230 Marks 99.76+ Percentile Jan 29, 2025 12:30 PM IST
Expected Most Important Topics in JEE Main Question Paper 29 January 2025
The most number of questions might have appeared from Integration, Conic Section, Modern Physics, Gravitation, and Electric Circuits in Shift 1.
Jan 29, 2025 12:15 PM IST
Expected Difficulty Level of JEE Main Question Paper 29 January 2025
Based on all days, and shifts analysis, the subject-wise difficulty levels are as follows:
Physics: Moderate
Chemistry: Moderate
Mathematics: Moderate to Tough
Jan 29, 2025 12:00 PM IST
JEE Main Question Paper 29 January 2025: Shift 1 Ends
The first shift, or the second last JEE Main 2025 Session 1 examination, has now concluded. Soon, the analysis, question paper, and answer key will shared on the blog. Stay tuned!
Jan 29, 2025 11:45 AM IST
JEE Main Question Paper 29 January 2025: Guidelines for Washroom
- Only one candidate will be allowed for toilet break at one time.
- After the toilet break is over, the candidates will undergo biometrics and frisking again.
Jan 29, 2025 11:30 AM IST
JEE Main Question Paper 29 January 2025: Marks vs Expected Percentile (3)
Marks Expected Percentile 231 marks 99.77+ percentile 230 marks 99.76+ percentile 229 marks 99.75+ percentile 228 marks 99.74+ percentile 227 marks 99.73+ percentile 226 marks 99.72+ percentile 225 marks 99.71+ percentile 224 marks 99.7+ percentile 223 marks 99.69+ percentile 222 marks 99.68+ percentile Jan 29, 2025 11:15 AM IST
JEE Main Question Paper 29 January 2025: Marks vs Expected Percentile (2)
Marks Expected Percentile 241 marks 99.845+ percentile 240 marks 99.84+ percentile 239 marks 99.835+ percentile 238 marks 99.825+ percentile 237 marks 99.82+ percentile 236 marks 99.815+ percentile 235 marks 99.805+ percentile 234 marks 99.8+ percentile 233 marks 99.79+ percentile 232 marks 99.78+ percentile Jan 29, 2025 11:00 AM IST
JEE Main Question Paper 29 January 2025: Marks vs Expected Percentile (1)
Marks Expected Percentile 250 marks 99.99+ percentile 249 marks 99.9+ percentile 248 marks 99.895+ percentile 247 marks 99.885+ percentile 246 marks 99.88+ percentile 245 marks 99.875+ percentile 244 marks 99.865+ percentile 243 marks 99.86+ percentile 242 marks 99.855+ percentile Jan 29, 2025 10:45 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 1 Mathematics Q5
Ques: In ∆ABC, A(4sinθ, 4cosθ), B(-2cosθ, 0) and C(2, 2sinθ). If locus of centroid is (3x - 2)2 + (3y)2 = α, then α is
Ans: 20
Jan 29, 2025 10:30 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 1 Chemistry Q5
Ques: Which of the following give violet color in Borax bead test?
Ans: Mn2+
Jan 29, 2025 10:15 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 1 Physics Q5
Ques: Energy of photon of wavelength λ is E0 which is equal to kinetic energy of proton of mass mp. The ratio of de Broglie wavelengths of proton and photon is
Ans: 1/c√E0/2mp
Jan 29, 2025 10:00 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 1 Mathematics Q4
Ques: Let E1 : x2/9 + y2/4 = 1 be an ellipse and a series of ellipses are drawn in that Ei + 1 has the same centre, eccentricity as E1 and Ei + 1's major axis is the minor axis of Ei. If Si be the area of Ei, then ( (5/π) ∑ Si from i = 1 to ∞ ) is equal to
Ans: 54
Jan 29, 2025 09:45 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 1 Chemistry Q4
Ques: Which of the following compounds have the same number of lone pair on central atomas CIF3
Ans: XeF-5
Jan 29, 2025 09:30 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 1 Physics Q4
Ques: In a YDSE, the distance of the 10th bright fringe from the central maxima is 10 mm when light of wavelength used is 600 nm. Find the distance (in mm) of the 10th bright fringe from the central maxima if light of wavelength 660 nm is used instead.
Ans: 11 mm
Jan 29, 2025 09:15 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 1 Mathematics Q3
Ques: 2an + 2 = 5an + 1 - 3an' prime where n = 0, 1, 2 If a0 = 3 and a1 = 4 then the find the value of ∑ ak from k = 1 to 100.
Ans: 3a100 - 91
Jan 29, 2025 09:00 AM IST
JEE Main Question Paper 29 January 2025: Shift 1 Begins
Today is Day 5 of JEE Main 2025 examination. Shift 1 has begun now, 9 AM, and will conclude at 12 PM.
Jan 29, 2025 08:45 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 1 Physics Q3
Ques: The lengths of a rectangular sheet are measured from a screw gauge of pitch 0.75 mm and number of division on circular scale = 15. Find maximum possible error in measurement of area.
Ans: 0.375 mm2
Jan 29, 2025 08:30 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 1 Mathematics Q2
Ques: Let k1 and k2 be two randomly selected natural numbers. The probability that (i)k1 + (i)k2 is non-zero is (where i = √-1)
Ans: 3/4
Jan 29, 2025 08:15 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 1 Chemistry Q2
Ques: Statement 1: For Titration of oxalic acid using KMnO4, warming of acid solution is required whereas in case of Ferrous Ammonium Sulphate, it is done at room temperature.
Statement 2: Fe2+ converts to Fe3+ ions during titrationAns: Statement 1 and Statement 2 are correct
Jan 29, 2025 08:00 AM IST
JEE Main Question Paper 29 January 2025 Shift 1: Previous Day Physics Q2
Ques: There are two prisms of refractive indices of 1.54 and 1.72 respectively. If ray is not deviating after passing through two prisms, then find prism angle of second prism if prism angle of first prism is 4°.
Ans: 3°
Jan 29, 2025 07:40 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 2 Mathematics Q5
Ques: Let P, be image of parabola P: y2 = 4x with respect to line x + y + 1 = 0. Let the line y + 5 = 0 intersect Pi at A and B. If a is the distance between A and B and d be the area of triangle SAB where S is the focus of parabola Pi. Then (a + d) is
Ans: 20
Jan 29, 2025 07:20 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 2 Chemistry Q5
Ques: Consider the following oxides
V2O3 , V2O4, V2O5
Oxidation state of vanadium in amphoteric oxide isAns: +5
Jan 29, 2025 07:00 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 2 Physics Q5
Ques: Mass M and radius R of a planet is related with Mass Me and Radius Re of earth as Me= 8Mp and Re= 2Rp. If escape speed for each is 11.2 km/sec, then escape speed of the planet is
Ans: 5.6 m/sec
Jan 29, 2025 06:40 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 2 Mathematics Q4
Ques: If p is the number of possible values of r such that Tr, Tr+1, Tr+2 are three terms of (a + b)12 are in a geometric progression and if q is the sum of rational terms in the expansion of (31/4 + 41/3)12 then (p + q) is
Ans: 283
Jan 29, 2025 06:20 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 2 Chemistry Q4
Ques: Consider the following statements
Statement I: In law of octaves, elements were arranged in ascending order of their atomic numbers.
Statement II: Lothar Meyer, plotted the physical properties against atomic weight.
Choose the correct answer from the options given below.Ans: Both Statement I and II are incorrect
Jan 29, 2025 06:00 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 2 Physics Q4
Ques: A balloon system having mass m is moving up with acceleration a, find the mass to be removed from it to have acceleration 3a. (Neglect the volume of mass attached)
Ans: ma/3a+g
Jan 29, 2025 05:40 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 2 Mathematics Q3
Ques: If p is the number of possible values of r such that Tr, Tr+1, Tr+2 are three terms of (a + b)12 are in a geometric progression and if q is the sum of rational terms in the expansion of (31/4 + 41/3)12 then (p + q) is
Ans: 283
Jan 29, 2025 05:20 AM IST
JEE Main Question Paper 29 January 2025: Previous Day Shift 2 Chemistry Q3
Ques: Which of the following biomolecules doesn't contain C1- C4 glycosidic linkage
Ans: Sucrose