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Content Curator updated | Updated On - Mar 7, 2023

JEE Main September 1, 2021 Afternoon paper was rated to be of average difficulty by the test takers. It is to be remembered that no Forenoon session was conducted on September 1, 2021. Following JEE Exam Pattern of the previous sessions, candidates were required to answer 25 questions in total out of the 30 Questions in each section of the paper. While 20 MCQs were mandatory to be attempted in each section, a choice of attempting any 5 NAT type questions from the 10 NAT Questions was given to the candidate. Overall, a candidate has to attempt 75 questions in total out of the 90 Questions present in the paper across the three sections. September 1 Shift 2 (Afternoon) Question paper and solution pdf are available below for JEE Main 2022 aspirants to download and practice upon.

JEE Main B.E./B.Tech Question Paper- September 1, 2021 Afternoon

JEE Main 2021 Question paper JEE Main 2021 Answer Key
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JEE Main 2021 B.E./B.Tech Question Paper September 1 (FN): Difficulty Level

JEE Main September 1, 2021 Afternoon (Shift 2) paper was conducted from 3.00 PM to 6.00 PM. The difficulty level of the paper was as follows

Mathematics

  • Mathematics was the toughest section of the paper since the questions were time-consuming and lengthy.
  • The dominant units in the paper were - Calculus, Integral Calculus, Coordinate Geometry, and Quadratic Equations. Check JEE Main Mathematics Syllabus

Physics

  • The Physics section was moderate in difficulty.
  • The majority of the questions were framed from Mechanics, Current Electricity, Semiconductors, and Electromagnetism. Check JEE Main Physics syllabus

Chemistry

  • Chemistry was the easiest of the three sections and included mostly direct formula-based or equation-based questions.
  • Equal weightage was given to Organic Chemistry (I and II) and Inorganic Chemistry (I and II) in the paper.The questions from Physical Chemistry were fewer. Check JEE Main Chemistry Syllabus

JEE Main 2021 Questions with Solutions

1 According to Bohr's atomic theory :- (A) Kinetic energy of electron is ∝Z2/n2. (B) The product of velocity (v) of electron and principal quantum number (n), 'vn' ∝Z2. (C) Frequency of revolution of electron in an orbit is ∝Z3/n3. (D) Coulombic force of attraction on the electron is ∝Z3/n4. Choose the most appropriate answer from the options given below:
2 Complete combustion of 1.80g of an oxygen containing compound (CxHyO2) gave 2.64g of CO2 and 1.08g of H2O. The percentage of oxygen in the organic compound is:
3 Out of the following, which type of interaction is responsible for the stabilisation of ∝ -helix structure of proteins?
4 (A) HOCl + H2O→ H3O+ Cl− + O2
(B) I+ H2O+ 2OH → 2I + 2H2O + O2
Choose the correct option.
5 Which of the following equation depicts the oxidizing nature of H2O2?
6 Given below are two statements:
Statement I : Colourless cupric metaborate is reduced to cuprous metaborate in a luminous flame.
Statement II : Cuprous metaborate is obtained by heating boric anhydride and copper sulphate in a non-luminous flame.
In the light of the above statements, choose the most appropriate answer from the options given below.
7 Which of the following reaction/s will not give p− aminoazobenzene?
8 In the given figure, the energy levels of hydrogen atom have been shown along with some transitions marked $A , B , C , D$ and $E$. The transitions $A, B$ and $C$ respectively represent :
9 Four identical particles of equal masses $1 kg$ made to move along the circumference of a circle of radius $1 m$ under the action of their own mutual gravitational attraction. The speed of each particle will be :
10 If an emitter current is changed by $4 mA ,$ the collector current changes by $3.5 mA$. The value of $\beta$ will be
11 Match List -I with List -II
12 Each side of a box made of metal sheet in cubic shape is 'a' at room temperature 'T', the coefficient of linear expansion of the metal sheet is ' $\alpha^{\prime}$. The metal sheet is heated uniformly, by a small temperature $\Delta T ,$ so that its new temperature is $T +\Delta T$. Calculate the increase in the volume of the metal box.
13 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:

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

Students can download JEE Main Previous Year Question Papers and Answer Key PDF from the links below for practice.

Similar 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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