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JEE Main 2021 B.Arch Question Paper with Answer Keys February [23, 2021- Afternoon Session]

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Content Curator updated | Updated On - Jan 24, 2023

JEE Main 2021 B.Arch was conducted across 437 exam centres in India on February 23rd, 2021. The total duration of the exam was 180 minutes. The exam commenced at 3:00 PM and ended at 6:00 PM. Students who opted for both the 2 papers (Paper 2A and 2B) would get 30 minutes extra to conclude the examination. The overall difficulty level was rated easy to moderate.

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JEE Main 2021 B.Arch Question Paper- February 23 (Afternoon)

JEE Main 2021 Question Paper	JEE Main 2021 Answer Key
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JEE Main 2022 Physics Preparation	JEE Main 2022 Chemistry Preparation	JEE Main 2022 Mathematics Preparation

JEE Main 2021 B.Arch Question Paper: Paper Analysis

The listed questions were related to the three sections i.e. General Aptitude, Mathematics, and Drawing. The General Aptitude Section was accountable for carrying 50% of the weightage. The below-mentioned table shows the number of questions listed as per the section and carried marks-

Sections	Question Frequency	Carried Marks	Good Attempts
Mathematics	30 (with 5 additional questions included)	100	10-15
General Aptitude	50	200	36-43
Drawings	2	100	-
Total	82	400	-

Mathematics section included 20 MCQs (Multiple Choice Questions) that were mandatory to attempt, and 10 numerical based questions, only 5 questions were mandatory to attempt

This year, the Mathematics section was comparatively easier than the previous year.
The General Aptitude was rated to be more difficult and flooded with complex questions

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 $BrCl _{3}$

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JEE Main Mathematics Syllabus	JEE Main Physics Syllabus	JEE Main Chemistry Syllabus	JEE Main B.Arch/B.Planning Syllabus

JEE Main Previous Year Question Papers

Candidates can solve the question papers of the previous year to analyze their performance levels. To enhance the accuracy level, candidates are advised to solve JEE Main Question Papers daily. JEE Main B.Arch year wise and subject wise question paper links with answer key PDFs are provided below:

JEE Main 2021 Question Paper	JEE Main 2020 Question Paper	JEE Main 2019 Question Paper
JEE Main 2018 Question Paper	JEE Main B.Arch and B.Planning Question Paper	JEE Main Mock Test
JEE Main Physics Question Paper	JEE Main Maths Question Paper	JEE Main Chemistry Question Paper

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

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JEE Main 2021 B.Arch Question Paper with Answer Keys February [23, 2021- Afternoon Session]

JEE Main 2021 B.Arch Question Paper- February 23 (Afternoon)

JEE Main 2021 B.Arch Question Paper: Paper Analysis

JEE Main 2021 Questions with Solutions

JEE Main Previous Year Question Papers

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