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JEE Main 2021 Aug 27 Shift 1 Question Paper with Solution PDF- Download Here

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Content Curator updated | Updated On - Mar 7, 2023

JEE Main 2021 B.E./B.Tech Question Paper - August 27, 2021- Forenoon session was rated to be of average difficulty by the premier coaching institutes of India. August 27 Shift 1 was the first paper of the 4th session in 2021. The exam had a dominant weightage of Class XII JEE Main syllabus, over Class XI syllabus. A total of 49 questions were asked from the Class XII syllabus and a total of 41 questions were asked from the Class XI syllabus. JEE Main 2022 aspirants can download the August 27, 2021 Forenoon (Shift 1) Question Paper and Answer Key for practice and observation from the links given below.

JEE Main B.E./B.Tech Question Paper- August 27, 2021 Forenoon

JEE Main 2021 Question paper	JEE Main 2021 Answer Key
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JEE Main 2021 B.E./B.Tech Question Paper August 27 (FN): Weightage of Topics

JEE Main 2021 B.E./B.Tech Paper on August 27 Forenoon Session conducted between 9.00 AM to 12.00 Noon. The highest weightage in JEE Main August 27, 2021 Foreenon (Shift 1) Question Paper are:

Subject	Topic	Marks in the Paper (including NATs)
Physics	Current Electricity, Electromagnetic Induction	12
	Electromagnetic waves and communication	8
	Heat and Thermodynamics	16
	Rectilinear motion and vectors, Unit and Dimensions	16 (8 marks each)
	Optics	8
	SHM and Waves	9
Chemistry	Chemical Bonding	8
	d block and f block elements	8
	Qualitative Analysis	8
	Grignard Reagent, Oxidation, Reduction	8
	Chemical Equilibrium	12
Mathematics	Coordinate Geometry	16
	Differential Calculus	12
	Integral Calculus	20
	Sequence and Series	8
	Trigonometry	8
	Vector 3D	8

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 (C_xH_yO₂) 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 + H₂O₂→ H₃O⁺+ Cl⁻+ O₂ (B) I₂+ H₂O₂+ 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:

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JEE Main 2022 Physics Preparation	JEE Main 2022 Chemistry Preparation	JEE Main 2022 Mathematics Preparation

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

JEE Main 2022 aspirants can practice their knowledge and skills by going attempting the Previous Year Question papers linked below:

JEE Main 2020 Question Paper	JEE Main 2019 Question Paper	JEE Main 2018 Question Paper
JEE Main Physics Question Paper	JEE Main Maths Question Paper	JEE Main Chemistry Question Paper

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

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