JEE Mains 2021: Memory based questions available for March session

NEW DELHI: The Joint Entrance Examination (Main) phase 2 has been conducted by the National Testing Agency from March 16 to 18. The authorities shall soon release the day wise official JEE Main 2021 question paper with solutions for the March session. Candidates will also be able to access their JEE Main response sheet for the March session of exams.

Given below are the subject wise JEE Main 2021 questions based on student memory who appeared in the March session of exams.

JEE Main 2021 Question Paper - Memory Based

Physics

Ques. Which is the current deflection relation in a tangent galvanometer?

Ans. Curve B

Ques. A pendulum is located inside lift. If initially time period of a pendulum is T. Find its time period if lift accelerate upwards with acceleration g/2

Ans. T x √2/3

Ques. F(x+1) = xF(x) and g(x) = lnF(x). Find |g”(5) – g”(1)|

Ans. -205/144

Ques. C1 and C2 are two curves intersecting (1,1)C1 satisfy dy/dx = y2 – x2 / 2xy & C2 satisfy dy/dx = 2xy / x2 – y2 The area bounded by these two curves is

Ans. π/2 – 1

Mathematics

Ques. If 349 (x+iy) = (3/2 + √3i/2)100 and x = ky. Then k is

Ans. -1/√3Ques. If R and R’ are symmetric relation (not dispoint) on a Set A, then the relation R ∩ R’ is

Ans. Symmetric

Ques. If 349 (x+iy) = (3/2 + √3i/2)100 and x = ky. Then k is

Ans. -1/√3Ques. If R and R’ are symmetric relation (not dispoint) on a Set A, then the relation R ∩ R’ is

Ans. Symmetric

Chemistry

Ques. Activator in froth flotation process

Ans. Na2SO4

Ques. Deficiency of Vitamin A causes

Ans. Night BlindnessQues. The complex ion [Cu(NH3)2]2+ isQues. Deficiency of Vitamin K causes

Ques. Gold(I) thionialeate is used as a medicine for the treatment of which of the following?

Ans. ArthritisQues.

Ques. Diamagnetic materials are

Ans. C2, N2, F2

Ques: Fructose is ________?

Ques: IUPAC name of acrylonitrile?

Ans: prop-2-enenitrile

Ques: Which oxidation state Cr shows?

Ans: +1, +2, +3, +4, +5, +6

Ques: By product of Solvay's reaction?

Ans. calcium chloride (CaCl2)

Ques: Which series in the hydrogen spectrum is not infrared?

Ans: Lyman series

The National Testing Agency will conduct two more sessions of JEE Mains 2021 examination in April and May. CAndidates will be given a chance to register afresh for a particular session if they could not perform well in the previous session.

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