JEE Main 23rd Feb 2021 B.Arch and B.Plan Shift 1 Question Paper Analysis (Available), Answer Key & Solutions

Overall Difficulty Level of the Exam

Moderate

Difficulty Level of Mathematics

Easy to Moderate

Difficulty Level of General Aptitude

Easy to Moderate

Difficulty Level of Drawing Questions

Moderate

Topics with More Weightage in Mathematics

• Vector Algebra
• Coordinate Geometry

• Patterns and Sequence

Difficulty Level of Numerical Questions

To be Updated

Expected No. of Good Attempts (B.Arch)

65+

Mathematics

• If A+B+C = 180 degrees. Then, find tanA+tanb+tanC =? - Answer - tanA tabB tanC
• If Z ₁ and Z ₂ is a unimodular complex number that satisfy Z _{1 ²} +Z _{2 ²} =4. Then (Z ₁ +Z ₁ ) ² + (Z ₂ +Z ₂ ) ² is equal to? Answer is 12
• Evaluate (e ^logx + sinx )cosxdx
• Area of the triangle formed by the complex number z, iz and z+iz is _____ Ans. 1/2 |z| ²
• Find the equation of the normal to the curve x ² = 4y which passes through the point (1,2). Ans. x+y = 3
• The locus of the midpoint of the chord of the circle x 2+y 2=4 which subtends a right angle at the origin is? - Ans. x ² + y ² = 2
• No. of divisors of the form (4n + 2), of the integer 240 is - Ans. 20
• The DE representing the family of curves y ² (2c + x ²⁰²¹ ) where c is the +ve parameter is of? Ans. Order 1
• Given x = cy+bx, y = az+cx, z = bx+ay where x, y and z are not all zero, then a ² + b ² + c ² + 2ab = _____ Ans. 1
• The minimum number of times a fair coin needs to be tossed so that the probability of getting at least two heads is at least 0.96 is ____ Ans. 8
• If x > 1, y > 1, z > 1 are in GP, then 1 /1+lnx, 1 /1+lny, 1 /1+lnz are in _______ Answer - HP
• If A, B and C are vector such that |B| = |C| then {(A+B) x (A+C)} x (B+C) x (BxC) = ______

General Aptitude

• Who was the designer of the world trade center? - Ans. Minoru Yamasaki, Emery Roth
• A person writes letters to 6 friends and addresses a corresponding envelope. The number of ways in which 5 letters can be placed in the wrong envelope is?

Drawing Questions

There was a question related to Corona Vaccination & Booth (Not completely sure about questions - to be updated soon)

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