# JEE Main 26 Feb 2021 (Shift 1, 2) Question Paper with Answer Key

 Details - JEE Main 2021, Login, Application Form, Correction, Admit Card, Withdraw Form Post Exam - Answer Key, Analysis, Response Sheet, Result Preparation - JEE Main 2021 Question Papers, Exam Pattern, Syllabus, Mock Test, Sample Paper, Previous Year Question Papers, Physics Notes, Chemistry Notes

JEE Main 26 Feb 2021 Question Paper with Answer Key – Students can get JEE Main 2021 answer key for 26 Feb shift 1 and shift 2 here. The answer key is released as memory-based, as per the question provided the students who appeared for the exam. Many renowned coaching centers like Resonance, Reliable Kota, gradeup, Allen, etc. are provided it as pdf with the video solutions. You can get it all here. NTA will release the official JEE Main 26 Feb 2021 Question Paper with Answer Key a few days after the exam is all days are over. Check below the questions and answers of JEE Main 26 Feb 2021 exam.

All Post-Exam Resources: JEE Main 2021 Question Paper , JEE Main 2021 Answer Key, JEE Main 2021 Exam Analysis.

## JEE Main 26 Feb 2021 Question Paper with Answer Key

From the table below, JEE aspirants can download the answer key and solution for the 26 Feb Shift 1 & 2 exam.

### JEE Main 26 Feb 2021Shift 2 Question Paper with Answer Key – Paper 1 (BE / B.Tech)

Ques.

Ans. A-S, B-R, C-P, D-Q

Ques. A chord is tied to a wheel of moment of Inertia ‘I’ and R radius. The other end attached to mass ‘m’. If the mass ‘m’ falls by H, the square of angular speed of the wheel is _____
Ans. 2mgh/ I+mr2

Ques. Find the dimension of C/V
Ans. M-2L-4T7A3

Ques. If a wire of length l has a resistance R is stretched by 25%. The percentage change in its resistance is
Ans. 50%

Ques.

Ques. Acidic nature of the oxides
Ans. B2O2, SiO2

Ques.

Ques. Number of octahedral voids in (CP)HCP

Ques. Seliwanoff and Xantho proteic test are respectively used for identification of ______
Ans. Ktose, Proteins

Ques.

Ques. 3, 5, 5, 4, 4, 4 – seven digit number are formed. Find the probability that the number is divisible by 2.
Ans. 3/7

Ques.

Ques.

Ques. Electron Enthalpy: O, Se, S, Te
Ans. S < O < S < Te

Ques. Find the metal in the following ores –

• Calmine – Zn
• Cryolite – Na3AlF6
• Haemitite – Iron
• Bauxite – Al
• Malachite – Cu

Ques.

Ques. Cerix ammounium nitrate test and CHCl3 / Alcoholic KOH test is for
Ans. alcohol & amine

Ques. A body starts from rest with acceleration a1 till time t1. Then body restedd with acceleration a2 and t2. And finally comes to rest. Then t1/t2 is ___
Ans. a1/a2

Ques. C / v =lamda. Then find the dimension of lamda, where c is capacity and V is voltage.

Ques. The recoil speed of a hydrogen atom after it emits a photon in going from n=5 state to n=1 state is
Ans. 4.178m/sec

Ques.

Ques.

Ques.

Ques. Velocity versus displacement graphs looks _____
Ans. Eclipse

Ques. CH2CH2CH2CH3 – Hybridistaion of all carbon

Ques. 4x2 + 9y2 = 36 and 2x2 + 2y2 = 31. Find the Slope of common tangent.

Ques. 2-4 DNP test is given by?
Ans. Aldehyde or Ketone

Ques. Match the following:

a)N2 i) 3
b)F2 ii) 2
c)O2 iii) 1
d)Ne2 iv) 0

Ques. Arrange in increasing order of electron gain enthalpy – O, S, Se, Te.
Ans. S>O>Se>Te

### JEE Main 26 Feb 2021Shift 1 Question Paper with Answer Key – Paper 1 (BE / B.Tech)

Ques.

Ques.

Ques.

Ques.

Ques. Seven digit integer whose number is 10 by using 1, 2, 3. How many possibilities are there?
Ans. 77

Ques. pi~pi/2sin2x dx

Ques. Intersection of lines x-y = 0. x+2y = 3, 2x+y = 6. Find whether
Ans. Isosceles

Ques. sin-¹x/a = cos-¹x/b = tan-1y/c. find the value of πc/a+b

Ques. Sigma n= 1 to 100 int of e^x-[x] from 0 to π/2

Ques. Symmetric matrix of order 2×2 sum of diagnol element of A2 = 1, then the possible number of matrix is
Ans. 6

Ques.

Ans. 0

Ques. Find the sum of the series: (30C0) x 30 + (30C1) x 29 + …….. + 30C29 x 1

Ques. Possible integral value of K if 3sinx + 4cosx = k+1
Ans. 6

Ques. If λ1 and λ2 are wavelength third member of ryman and 1st no. of paschen series respectively. The value of λ12 is
Ans. 7:135

Ques. Compound A is use as stn oxidising agent is amphoteric in nature. It is the part of load storage battery. Compound A is
Ans. PbO2

Ques. Orbital having 2 radial and 2 angular nodes.
Ans. 5d

Ques. In YDSE two slits are d = 2mm, D = 1m, α = 500m, β = ?
Ans. 0.25mm

Ques. An attenating current is given by equation: i2i1sinwt + i2coswt. The rms current win are –

Ques. Which lanthonoid do not form MnO2?
Ans. Yd

Ques. Hall and Heroult’s process is used for
Ans. Extraction for Al

Ques. Structure of Neoprene

Hi,

If you have appeared for JEE Main 26 Feb 2021 (shift 1 or 2) and if you remember any question that was asked today then submit it below. We will provide you answers / solutions for it.

### JEE Main 26 Feb 2021Shift 2 Question Paper with Answer Key – Paper 1 (BE / B.Tech)

Questions and answers of JEE Main 2021 26 February shift 2 will be available here on 26 Feb 2021 after 6 pm.

### How to use JEE Mains 2021 Answer Key to calculate score?

To estimate the probable score, the students firstly have to curate the JEE Mains question paper, answer key and response sheet. The steps to use the same are as follows.

1st step: As the first step, tally the question number and responses given in the JEE Mains answer key carefully.

2nd step: Now, add and deduct marks as per the marking scheme of JEE Mains 2021. It is as follows.

3rd step: The marks you get after adding and deducting the marks are the probable score you will receive JEE Mains 2021.

### How can students download JEE Main Answer Key 2021?

The students must ensure that they have a strong internet connection and a compatible browser before downloading their official JEE mains answer key. The steps are as follows.

1st step: As the first step, you need to click on the above given link.

2nd step: On doing so, the candidate dashboard will open, where in you need to enter the following important details:

• Application Number
• Date of Birth

3rd step: On clicking on the submit button, the JEE Main Answer Key appears on the screen in the PDF format.

### JEE Mains 2021 Question Paper

The JEE Mains 2021 Question Paper is released along with the answer key on jeemain.nta.nic.in. To download the same, you need to login with application number and DOB. The question paper consists of question id, alternative and options, question paper code. Candidates can use this JEE Mains paper question paper to tally their answers in the OMR sheet. They can also use it as previous year question paper to prepare for upcoming JEE mains entrance exam.

### JEE Mains 2021 Response Sheet

The JEE Mains 2021 response sheet is defined as the OMR sheet, where in the candidates have to enter their responses. It is an important document, as the students have to tally their responses with the answer key to estimate the JEE mains probable score. Candidates can download the same by logging in with their application number and date of birth from jeemain.nta.nic.in.

### How to challenge the JEE Mains 2021 Answer Key?

In case there is any mistake or error in the JEE Mains 2021 Answer Key, then you can raise an objection against the same by logging in with their question number and password. The students need to login with their username and DOB, in candidate login and click on the challenge answer key button. The steps are as follows.

• 1st step: Firstly, you need to go on the official website i.e jeemain.nta.nic.in.
• 2nd step: The students need to login with their username and DOB, in candidate login and click on the challenge answer key button.
• 3rd step: Now, select the question id and response that you want to raise an objection for.
• 4th step: After clicking on the submit button, pay the challenge fee i.e Rs.200 per question.

## About JEE Mains 2021

National Testing Agency (NTA), New Delhi, conducts JEE Mains 2021 in computer based mode. It is a national level entrance examination for the admissions into the B.Tech, B.Arch, and B.Planning / B.E courses. The JEE mains is conducted in the form of 2 papers i.e the 1st paper is held for B.E / B.Tech and 2nd paper is conducted for B.planning and 3rd paper is for B.Arch. The duration of JEE mains 2021 paper is 3 hours, the syllabus for JEE mains is Physics, Chemistry and Biology. After the result has been declared, the students have to take part in JoSaa counselling.

### FAQ’s for JEE Mains 26 Feb Answer Key

Ques 1. Is JEE Main Answer Key sent by post to candidates?

Ans 1. No, you have to download it online from the official website i.e jeemain.nta.nic.in

Ques 2. Can I challenge against the unofficial JEE Mains 2021 Answer Key?

Ans 2. No, you can only challenge the official answer key.

Ques 3. Can I raise an objection against the JEE Mains 2021 final answer key?

Ans 3. No, you cannot raise an objection against the same.

Official Website: jeemain.nta.nic.in