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Content Curator updated | Updated On - Mar 7, 2023

JEE Main 2021 B.E./B.Tech Question Paper- February 26, 2021- Afternoon Session was rated by the applicants and coachings institutes to be of moderate difficulty. Most of the questions were more or less directly based on questions in the CBSE textbooks with an equal allocation to class XI and class XII subjects in the paper. Candidates preparing for JEE Main 2022 can download the question papers with answer key PDFs for the afternoon session on February 26, 2021, to get a better idea about the type of questions asked in the paper and the difficulty level of questions.

JEE Main 2021 B.E./B.Tech Question Paper with Answer Key PDFs - (February 26, Afternoon)

JEE Main 2021 Question Paper JEE Main 2021 Answer Key
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JEE Main 2021 B.E./B.Tech Question Paper February 26 (Afternoon Session): Paper Analysis

JEE Main 2021 B.E./B.Tech Question Paper February 26 (Afternoon Session) was conducted between 3.00 PM to 6.00 PM. The paper was reported to be moderate in terms of difficulty by the test takers.

  • The Mathematics section had lengthy questions to solve, but their difficulty level remained moderate.
  • The difficulty level of the Physics section was also termed moderate.
  • As per the usual JEE Main Question Paper Analysis, the Chemistry section was the easiest of the three sections.
  • In Physics, Mechanics (30%), Electrodynamics (27%), and Modern Physics (20%) had the highest weightage. Check JEE Main Physics Syllabus
  • In Chemistry, Inorganic Chemistry I (30%), Organic Chemistry II (27%), and Inorganic Chemistry II (17%) had the highest weightage. Check JEE Main Chemistry Syllabus
  • In Mathematics, high weightage was given to – Differential Calculus (17%), Integral Calculus (15%), Coordinate Chemistry (15%), and Trignometry (12%). Check JEE Main Mathematics Syllabus 

Check: Detailed Paper Analysis of February 26 Afternoon Session at – JEE Main Question Paper Analysis

JEE Main 2021 Questions with Solutions

1 A cube of side 'a' has point charges $+ Q$ located at each of its vertices except at the origin where the charge is $-Q$. The electric field at the centre of cube is:
2 If $Y, K$ and $\eta$ are the values of Young's modulus, bulk modulus and modulus of rigidity of any material respectively. Choose the correct relation for these parameters.
3 Two equal capacitors are first connected in series and then in parallel. The ratio of the equivalent capacities in the two cases will be:
4 An LCR circuit contains resistance of $110 \Omega$ and a supply of $220 V$ at $300 rad / s$ angular frequency. If only capacitance is removed from the circuit, current lags behind the voltage by $45^{\circ} .$ If on the other hand, only inductor is removed the current leads by $45^{\circ}$ with the applied voltage. The $rms$ current flowing in the circuit will be:
5 Calgon is used for water treatment. Which of the following statement is $NOT$ true about Calgon?
6 Statements about heavy water are given below
A. Heavy water is used in exchange reactions for the study of reaction mechanisms
B. Heavy water is prepared by exhaustive electrolysis of water
C. Heavy water has higher boiling point than ordinary water
D. Viscosity of $H _{2} O$ is greater than $D _{2} O$
7 Given below are two statements : Two photons having equal linear momenta have equal wavelengths. If the wavelength of photon is decreased, then the momentum and energy of a photon will also decrease. In the light of the above statements, choose the correct answer from the options given below.
8 If an emitter current is changed by $4 mA ,$ the collector current changes by $3.5 mA$. The value of $\beta$ will be
9 In Freundlich adsorption isotherm, slope of AB line is:
10 In the given figure, a mass $M$ is attached to a horizontal spring which is fixed on one side to a rigid support. The spring constant of the spring is $k$. The mass oscillates on a frictionless surface with time period $T$ and amplitude $A$. When the mass is in equilibrium position, as shown in the figure, another mass $m$ is gently fixed upon it. The new amplitude of oscillation will be:
11 The correct order of bond dissociation enthalpy of halogens is:
12 Which of the following are isostructural pairs?
A. $SO _{4}^{2-}$ and $CrO _{4}^{2-}$
B. $SiCl _{4}$ and $TiCl _{4}$
C. $NH _{3}$ and $NO _{3}^{-}$
D. $BCl _{3}$ and $BrCl _{3}$ $BCl _{3}$ and $BrCl _{3}$

JEE Main B.E/ B. Tech Previous Year Question Papers with Answer Key PDFs

Solving JEE Main Question Papers on a daily basis helps the candidate in improving the speed and accuracy level of answering the questions. One can get familiar with his/her weak and strong areas which further help in the final preparations for the exam.

Other B.Tech Exam Question Papers

*The article might have information for the previous academic years, please refer the official website of the exam.

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