JEE Main 2021 B.Planning Question Paper with Answer Keys (September 9, 2021- Afternoon Session)

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JEE Main 2021 B.Planning Question Papers with Answer Keys are available to download. The exam was conducted on September 9th 2021. The JEE Main B.Planning carried a total of 100 marks. The exam was conducted in CBT (computer based test) mode. 180 minutes were allocated to solve the question paper of JEE Main 2021 B.Planning.

JEE Main 2021 B.Planning Question Paper- September 9 (Afternoon)

JEE Main 2021 Question Paper	JEE Main 2021 Answer Key
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JEE Main 2021 B.Planning Exam Pattern

The JEE Main 2021 question paper included questions related to three parts-

Part 1- Mathematics

Part 2- Aptitude

Part 3- Planning based questions

The aptitude section carried a total of 50% weightage in JEE Mains 2021. The other sections carried the rest of the weightage equally. Follow the below-mentioned table to get the details of questions asked in JEE Mains 2021 B.Planning-

Sections	Question Frequency	Carried Marks
Mathematics	30 (5 additional questions were included)	10
General Aptitude	50	200
Planning Based Questions	25	100
Total	105	400

There were a total of 30 questions in Mathematics. However, only 25 out of 30 questions were supposed to be attempted

JEE Main 2021 Marking Scheme

There were both MCQs and Non-MCQs questions in JEE Main 2021 B.Planning. Both the sections followed a separate marking pattern. Have a look at the below-mentioned table to get the details of marking pattern-

Question Type	Marking Scheme
For each correct MCQ	4 marks will be rewarded
For each incorrect MCQ	1 mark will be deducted
For each incorrect Non-MCQ	4 marks will be rewarded
For each incorrect Non-MCQ	No marks will be deducted

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:

Also Check:

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 Papers	JEE Main Mock Test
JEE Main Physics Question Paper	JEE Main Maths Question Paper	JEE Main Chemistry Question Paper