Zollege is here for to help you!!
Need Counselling
Sonam Rana updated's profile photo

Sonam Rana updated

Content Curator updated | Updated On - Mar 7, 2023

JEE Main 2021 B.E./B.Tech Question Paper - July 25, 2021- Afternoon Session was considered to be moderate in terms of difficulty by coaching institutions and students alike. Like the July 25, 2021 Forenoon session, the afternoon session too had Mathematics as the easiest section featuring direct formula-based questions. The Physics section was a little more difficult featuring a few complex problems based on Mechanics. Like July 25 Shift 1 Chemistry section, Chemistry was the toughest section of this exam, requiring a relatively deeper understanding of Organic Chemistry (II) and Inorganic Chemistry (I). For the benefit of JEE Main 2022 aspirants, the entire July 25 Afternoon Question paper and solution pdf are given in the links below:

JEE Main B.E./B.Tech Question Paper- July 25, 2021 Afternoon

JEE Main 2021 Question paper JEE Main 2021 Answer Key
Download PDF Download PDF


JEE Main 2021 B.E./B.Tech Question Paper July 25 (AN): Paper Analysis

JEE Main 2021 B.E./B.Tech Paper on July 25 Afternoon Session was conducted between 3.00 PM to 6.00 PM, the analysis of questions is as follows.

Subject Topic Number of Questions Related Links
Physics Electrodynamics 7 JEE Main Physics Exam Pattern
Heat and Thermodynamics 1
Mechanics 12
Modern Physics 7
Optics 2
SHM and Waves 1
Chemistry Inorganics Chemistry I 5 JEE Main Chemistry Exam Pattern
Inorganics Chemistry II 4
Organics Chemistry I 3
Organic Chemistry II 10
Physical Chemistry I 5
Physical Chemistry II 3
Mathematics Binomial Theorem 3 JEE Main Mathematics Exam Pattern
Complex Numbers 1
Coordinate Geometry 2
Differential Calculus 6
Integral Calculus 2
Mathematics Reasoning 1
Permutation and Combination 2
Probability 1
Vector and 3D 4
Statistics 1
Fundamentals of Mathematics 3
Trigonometry 2
Matrix and Determinants 2

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

Collegedunia has provided JEE Main Previous Year Question Papers for aspirants in the links below.

Similar B.Tech Exam Question Papers

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

Ask your question