# JEE Main 17 Mar 2021 Question Paper with Answer Key (Live) – Check Here

 Details - JEE Main 2021, Login, Application Form, Correction, Admit Card, Withdraw Form Post Exam - Answer Key, Analysis, Response Sheet, Result Preparation - JEE Main 2021 Question Papers, Exam Pattern, Syllabus, Mock Test, Sample Paper, Previous Year Question Papers, Physics Notes, Chemistry Notes

JEE Main 17 Mar Question Paper with Answer Key – Now JEE Main answer key for 17 March 2021 sift 1 and 2 is available. You can check if from below. JEE Main 17 Mar question paper with answer key can be used to cross-check their answers and calculate probable score. For the calculation of marks, students will need to add 4 marks for correct answer and deduct 1 mark for each wrong MCQ. JEE Main 2021 result is released based on the JEE Main official answer key on the official website, jeemain.nta.nic.in. Check more details on JEE Main 17 Mar Question Paper with Answer Key from this page.

## JEE Main 17 Mar Question Paper with Answer Key

Latest – Now check JEE Main 17 March shift 1 and 2 memory-based questions and answers by resonance and reliable kota.

### JEE Main 17 Mar Shift 1 Answer Key by Reliable Kota and Resonance

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Q: Two masses of A and B of equal masses are attached to 2 different springs of spring constant K1 and K2. If their velocity is equal at the mean position, then find the ratio of their amplitude.

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Q: Which is not an extensive property?
a) Gibbs free energy
b) Enthalpy
c) Entropy
d) Viscosity
Ans: d

Q: Which compound can be found by the Kjeldal’s method?

Q: Fructose is ________?

Q: IUPAC name of acrylonitrile?
Ans: prop-2-enenitrile

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Q: A geostationary satellite is orbiting the earth at a height of 11R above the surface of the earth. R is the radius of the earth. If the time period of the satellite is 24 hours, find out the time period of another satellite that is revolving at 2R from the surface of the earth?
Ans: 3

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Q: Find out the ratio of Cp/Cv o polyatomic gas of 2 vibrational degree of freedom?
Ans: 1.25

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Q: Which oxidation state Cr shows?
Ans: +1, +2, +3, +4, +5, +6

Q: By product of solvay’s reaction?
Ans. calcium chloride (CaCl2)

Q: Which series in hydrogen spectrum is not infrared?
Ans: Lyman series

Q: Which is linear species?
Ans: N3

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Q: Which is wrong about eutrophication?
a) Dense plant growth
b) Excess use of fertilisers
c) Excess use of detergent
d) Efficiency of nutrients
Ans: d)

Q: Which enzyme is involved in the conversion of glucose to ethanol and sucrose to glucose and fructose?
Ans: Zymase and invertase respectively

Q: The magnetic momemt of Fe in B.M.?
Ans: 4.92 BM

Q: Which of the following par is different from others?
a) Li Na
b) Li Mg
c) Be Al
d) B Si
Ans. a)

Q: Number of C-C sigma bond in mesityl oxide?
Ans: 5

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### More JEE Main 17 March Shift 1 Questions and Answers

Q: If the vernier calliper has a positive error of 0.2 mm. If zero of vernier scale lies between 8.5 cm and 8.6 cm. If 6th division of vernier scale coincides with main scale. Then reading will be: (L.C. = 0.1 mm)
Ans: 8.54 cm

Q: If series combination of two resistance is s and parallel combination is p and if s = np then find minimum value of n:
Ans: 4

Q: Find area covered (in km2) by a antenna of height 30m : [Re = 6400 km, π = 3.14]
Ans: 1206

Q: Current in a wire is 10 ampere and area of cross section is 5 mm2 & drift velocity is 2 × 10–3 m/sec then find electron number density.
Ans: 6.25 × 1027

Q: To what minimum value radius of earth should be reduced so that escape velocity becomes ten times of its actual value?
Ans: 64.00

Q: At what energy level of unielectronic carbon has same energy as of hydrogen in ground state.
Ans:
6

Q: A carnot engine work between two reservoirs at temperate 400 K and 800 K. Its work per cycle is 1200 J. Find heat supplied per cycle.
Ans: 2400 J

Q: A ring, disc, solid cylinder and solid sphere all are released from fixed incline plane of inclination θ. The minimum time taken by an object to arrive at bottom of incline, if all perform pure rolling.
Ans: Solid Sphere

Q: A plano convex lens of diameter 6 cm and thickness 3mm. The speed of light passed is 2 × 108 m/s. Then find the focal length of the lens.
Ans: 30 cm

Q: Which of the following statement is incorrect about allosteric site?
(1) Allosteric site changes the shape of active site.
(2) Non competitive inhibitor changes the active site of enzyme binding at allosteric site.
(3) Some drug bind to a different site of enzyme which is allosteric site.
(4) Competitive inhibitors attach to the allosteric site.
Ans: 4

Q: Which of the following is false for heavy water?
(A) It is a byproduct in some fertilizer industries.
(B) It is used in exchange reactions for the study of reaction mechanism.
(C) Its dielectric constant is higher than H2O.
(D) It is used as a moderator in nuclear reactor.
(1) A,B,C (2) A,B,C,D (3) C only (4) A,B
Ans: 3

Q: Mole fraction of 100 molal aqueous solution of a solute is x. Given value of x X 10–1
Ans: 6

Q: Spin magnetic moment of divalent ion (z = 25) in aqueous solution is :
Ans: 5.9 BM

Q: A non-reacting gas mixture of 6.4 g CH4 & 8.8 g CO2 is present in a 10L container at 27ºC. Pressure in KPa =? (R = 8.314 J/K-mol)
Ans: 150

Q: In Hydrogen atom electron is moving in circular orbit with speed v and principal quantum number of orbit is n then correct relation is.
Ans: v is inversely proportional to 1/n.

Q: Which is the current deflection relation in tangent galvanometer?

Ans: C

Q: In the contact process, impurities of arsenic are removed by…?
Ans:
Fe(OH)3

Q: The correct order of bond energy for N2, N2+, N2, and N22- is

Q: The general solution of the following equation is:

Q: The point on the curve 3y = 6x-5x3 the normal at which it passes through the origin

Q: y2 = 6ax and x2+y2= 16 a2, find the common area?

Q: TiH1.73 is an example of which hydride?
Ans:
Metallic Hydride

Q: The correct order of dipole moment of the following is:

Ans: b

Q: A+HIO4 —————–> 3HCOOH + HCHO + CHO-COOH, A is
Ans:
Gluconic acid

Q: The maximum concentration of zinc in drinking water is?
Ans: 5ppm

Q: A polyatomic gas has 24 vibrational modes find its gamma?

Hi! If you have appeared for JEE Main 17 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 Use JEE Main 17 Mar 2021 Answer Key?

The answer key for JEE Main 2021 entrance exam can be used by the candidates for cross-checking their answers in the following ways –

1st Step: First of all you will need to download the answer key and question paper as provided on this page above.

2nd Step: Once you download the pdf, you need to start adding and deducting the marks as per the marking scheme explained below.

3rd Step: The marks derived after the marking scheme is the probable score of the candidate.

### How to Download NTA JEE Main Answer Key 2021?

The official answer key for JEE Main 2021 is released online at NTA official website. You can download it by simply following the instructions as provided below.

• Visit the official website of the entrance exam at jeemain.nta.nic.in.
• On the homepage of the website, you will need to click on the relevant link for answer key and question paper.
• After this, you need to enter login by entering the application number and date of birth.
• Submit the login details.
• Once you submit the details, you will need to click on the relevant link for the question paper, response sheet, and answer key.
• Download the pdf on your device and start cross-checking your answers.

### JEE Main 2021 Question Paper

Since it is a computer-based test, along with the answer key, NTA also releases the response sheet and question paper for the candidates. It will be easy for the candidates to cross-check their answers using the resources as released by the exam conducting body. JEE Main 2021 question paper can be downloaded from the candidate login using the application number and date of birth.

### About JEE Main 2021

Joint Entrance Examination (JEE) Main conducted by the National Testing Agency (NTA) is a national-level entrance examination. The exam is going to be held four times a year to shortlist them or admission into BE / B.Tech, B.Arch, and B.Plan. The entrance exam is conducted in an online computer-based mode that consists of multiple-choice and numerical answer type questions. The score for JEE Main paper 1 is used for admission at NITs, IIITs, CFTIs.

## FAQs on JEE Main 17 Mar 2021 Question Paper with Answer Key

Ques. Is JEE Main 17 Mar 2021 answer key released as pdf by NTA?

Ans. No, the official answer key is not released as pdf. Whereas, there are various coaching institutes which releases the answer key pdf a few hours after each shift is over.

Ques. What is required to download JEE Main answer key?

Ans. In order to download the answer key for JEE Main 2021, students will need to enter their application number and date of birth / password.

Ques. Are the unofficial answer keys for JEE Main 17 March 2021 exam any good?

Ans. The unofficial answer keys can be refereed by the aspirants to get an idea about their performance in the examination and about the scores. However, to know the certainty of the JEE Main score, you should refer to the official answer key which is released by NTA.

Official website: jeemain.nta.nic.in