**JEE Main 18 Mar 2021 Question Paper with Answer Key** – From this page, the candidates can download JEE Main 18 March 2021 question paper with answer key. The questions and answers given here are memory-based. To calculate the scores using the answer key, award 04 marks for each correct correct. Deduct 01 marks for each incorrect MCQ. Check the details about JEE Main 18 March 2021 question paper with answer key given here.

## JEE Main 18 Mar 2021 Question Paper with Answer Key

**Latest:** JEE Main 18 Mar 2021 Shift 1 answer key released by Reliable Kota and Resonance. Download from the direct link below.

JEE Main 18 Mar Shift 2 answer key is now available. Check it from below.

### JEE Main 16 Mar Shift 2 Answer Key by Reliable Kota and Resonance

Subject | Shift 2 Answer Key By Reliable Kota | Shift 2 Answer KeyBy Resonance |
---|---|---|

Maths | Download Here | Download Here |

Physics | Download Here | Download Here |

Chemistry | Download Here | Download Here |

### JEE Main 16 Mar Shift 1 Answer Key by Reliable Kota and Resonance

Subject | Shift 1 Answer Key By Reliable Kota | Shift 1 Answer KeyBy Resonance |
---|---|---|

Maths | Download Here | Download Here |

Physics | Download Here | Download Here |

Chemistry | Download Here | Download Here |

**Ques. **Deficiency of Vitamin A causes**Ans. **Night Blindness

**Ques. **The complex ion [Cu(NH3)2]2+ is

**Ques. **Deficiency of Vitamin K causes**Ans.** Significant bleeding, poor bone development, osteoporosis, and increased cardiovascular disease

**Ques. **Activator in froth flotation process **Ans.** Na2SO4

**Ques. **Decreasing order of catenation of group-16**Ans. **S > O > Se > Te

**Ques.** 10, 7, 8 are sides of a triangle. Find projection of side of length ’10’ and ‘7’. **Ans. **85/14

**Ques. **4y^{2} = x^{2} (4-x)(x-2), find the area bounded by the curve. **Ans.** 16/3

**Ques. **sin^{4}α + 10cos^{4}α = 6, 27 sec^{6}α + 8cosec^{6}α = **Ans.** 250

**Ques. **If S_{1} is the sum of first 2n terms and S_{2} is the sum of first 4n term and S_{2} – S_{1} is equal to 1000 then S_{3} sum of first 6n terms of same AP.**Ans. **3000

**Ques. **z = -1 + √3i, ω is complex number such that |zω| = 1

arg (z) – arg (w) = π/2, find the area of triangle made. **Ans. **1/2

**Ques. **Find the locus of center of circle between touches x^{2} + y^{2} = 9 internally (x+y)^{2} + y^{2} = 1 externally.

**Ques. **Out of 2n terms: n terms are ‘a’ and rest are ‘-a’. If we add ‘b’ to all terms than mean = 5 and stand deviation = 20, then a^{2} + b^{2} = ?**Ans. **425

**Ques. **xdy – ydx = √x^{2} – y^{2}dx, y(1) = 0, area curve above x-axis on x ∊ [1, e^{π}] is**Ans.** 4

**Ques. **There are 5 independent trials, probability of exactly one success is 0.4096, probability of exactly two success = 0.2048. Find the probability of exactly 3 successes. **Ans.** 32/625

**Ques. **(x+1/x^{2/3} – x^{1/3} + 1 – x-1/x+x^{1/2})^{10}, find the term independent of ‘x’ **Ans. **^{10}C_{4}

**Ques. **P(x) is a polynomial such that P(x) = f(x^{3}) + xg(x^{3}), P(x) is divided by x^{2} + x + 1. Find the value of P(1). **Ans. **0

**Ques. **x^{2}/27 + y^{2} = 1. tangent is drawn at (3√3, cosθ, sinθ). If tangent meets x-axis and y-axis at A and B. Minimum value of sum of intercepts is at θ**Ans. **π/6

**Ques. **One side of equilateral triangle is x + y = 3, centroid is (0,0), r + R = **Ans. **9/√2

### JEE Main 18 Mar Shift 2 Video Solutions by Vedantu

**Ques. **The reaction of glucose with acetic anhydride and Tollen’s reagent suggests that it is**Ans.** a-bentahydroxy aldenide

**Ques.**Which of the following is not a functional isomeric of C3H6O**Ans.** Propanol

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

**Ques.** Diamagnetic materials are **Ans. **C2, N2, F2

**Ques.** Reaction of Br2 on ethylene in the presence of NaCl gives the compound as major product is**Ans. **Cl-Ch2-Ch2-Br

**Ques. **Which of the following shows bond in silicones?**Ans. **-Si-O-Si-O-Si

**Ques. **The equation of common tangent to the parabola y^{2} = 16ax and x^{2} = 8ay is**Ans. **y = mx+a/m

**Ques. **If 3^{49} (x+iy) = (3/2 + √3i/2)^{100} and x = ky. Then k is **Ans. **-1/√3

**Ques. **If R and R’ are symmetric relation (not dispoint) on a Set A, then the relation R ∩ R’ is**Ans. **Symmetric

**Ques.** If log(5c/a), log (3b/5c) and log(a/3b) are in AP and a,b,c are in GP. Then a,b,c are the length of sides of

### JEE Main 18 Mar Shift 1 Video Solutions by Rakesh Kumar Yadav

*Hi! If you have appeared for JEE Main 18 Mar 2021 (shift 1 or 2) and if you remember any question that was asked today then submit it below. We will provide you answers / solutions for it.*

### How to Calculate Scores Using JEE Main 18 Mar 2021 Answer Key?

Check the steps given below to calculate the scores using JEE Main 18 March 2021 answer key.

**1st step: **Download the answer key according to the respective shift.

**2nd step: **Next, download the question paper and then, start cross-checking the answers.

**3rd step: **Now, write down the correct and incorrect answers.

**4th step:** Next, calculate the marks using the marking scheme given below.

**Marking Scheme**

Type of questions | Marks for correct answer | Marks for incorrect answer |
---|---|---|

MCQ | +4 | -1 |

NVT | +4 | 0 |

The score calculated after following the above marking scheme will be the probable score.

### Steps to Download Official JEE Main 2021 Answer Key

Check the steps given below to download the official JEE Main 2021 answer key.

**1st step:** Go to the official website, jeemain.nta.nic.in.

**2nd step:** Next, click on the link of the answer key.

**3rd step:** Then, enter the application number and date of birth / password in the login window.

**4th step: **Next, click on the ‘sign-in’ button.

**5th step:** Lastly, download the pdf of the answer key.

### JEE Main 2021 18 Mar 2021 Question Paper

Various coaching institutes release JEE Main question paper after the examination. These question papers are released along with the answer keys. The candidates can use the question paper and answer key together to calculate the scores.

NTA releases the official question paper at the official website, jeemain.nta.nic.in. The question paper is released after the conduct of the exams for all the shifts.

### Previous Year Cut-Off Scores

Given below are the previous year JEE Main cut-off scores.

Category | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
---|---|---|---|---|---|---|

Open | 90.3765335 | 89.7548849 | 74 | 81 | 100 | 105 |

GEN EWS | 70.2435518 | 78.2174869 | – | – | – | – |

OBC NCL | 72.8887969 | 74.3166557 | 45 | 49 | 70 | 70 |

SC | 50.1760245 | 54.0128155 | 29 | 32 | 52 | 50 |

ST | 39.0696101 | 44.3345172 | 24 | 27 | 48 | 44 |

PWD | 0.0618524 | 0.11371730 | -35 | 01 | – | – |

### JEE Main 2021 Exam Pattern

Check the details about JEE Main 2021 given below.

It is a computer-based test. The duration of the test is 3 hours. There are multiple-choice questions and numerical value type questions in the test.

**Distribution of questions**

**B.E / B.Tech**

Subject | Section A | Section B (5 questions to be answered for each subject) | Total marks |
---|---|---|---|

Mathematics | 20 | 10 | 100 |

Physics | 20 | 10 | 100 |

Chemistry | 20 | 10 | 100 |

Total | 300 |

**B.Arch**

Subject | Section A | Section B (5 questions to be answered) | Total marks |
---|---|---|---|

Mathematics (Part I) | 20 | 10 | 100 |

Aptitude Test (Part II) | 50 | 200 | |

Drawing Test (Part III) | 02 | 100 | |

Total | 400 |

**B.Plan**

Subject | Section A | Section B (5 questions to be answered) | Total marks |
---|---|---|---|

Mathematics (Part I) | 20 | 10 | 100 |

Aptitude Test (Part II) | 50 | 200 | |

Planning based objective type MCQs (Part III) | 25 | 100 | |

Total | 400 |

### JEE Main 2021 Result

JEE Main 2021 result can be checked from jeemain.nta.nic.in. The candidates can check the result by entering the application number and date of birth.

- No rank card is dispatched to the candidates. It can be downloaded via online mode only.
- There is no provision for re-checking / re-evaluation of the result.
- According the NTA score, All India Rank (AIR) shall be compiled.
- The raw marks are obtained by the candidates in different sessions will be converted to NTA score.

## About JEE Main 2021

Joint Entrance Examination (JEE) Main is an entrance exam held for admission into B.E / B.Tech / B.Arch / B.Plan. It is one of the biggest national-level entrance exam. The test comprises multiple-choice questions and numerical answer-type questions. According to the rank obtained in the exam, the seats are allocated in NITs, IIITs, CFTIs.

## FAQs for JEE Main 18 Mar 2021 Question Paper with Answer Key

**Ques. Can I challenge the unofficial answer key?**

Ans. No, you cannot challenge the unofficial answer key.

**Ques. Where can I download the official answer key?**

Ans. You can download the official answer key from jeemain.nta.nic.in.

**Ques. What is the marking scheme?**

Ans. For each correct answer, 04 marks are awarded. Negative marking of 01 marks is done in case of MCQ.