JEE Main 2021 B.E./B.Tech Question Paper with Answer Keys in Bengali (February 24, 2021- Forenoon Session)

JEE Main 2021 B.E./B.Tech āĻĒā§āϰāĻļā§āύāĻĒāĻ¤ā§āϰ - 24 āĻĢ⧇āĻŦā§āϰ⧁āϝāĻŧāĻžāϰ⧀, 2021- āĻĒā§āϰāĻžāϰāĻŽā§āĻ­āĻŋāĻ• āĻ…āϧāĻŋāĻŦ⧇āĻļāύ āĻ›āĻžāĻ¤ā§āϰ āĻāĻŦāĻ‚ āĻŦāĻŋāĻļ⧇āώāĻœā§āĻžāĻĻ⧇āϰ āĻĻā§āĻŦāĻžāϰāĻž āϏāĻžāĻŽāĻ—ā§āϰāĻŋāĻ• āĻ…āϏ⧁āĻŦāĻŋāϧāĻžāϰ āĻĒāϰāĻŋāĻĒā§āϰ⧇āĻ•ā§āώāĻŋāϤ⧇ āĻŽāĻ§ā§āϝāĻŽ āϰ⧇āϟ āĻ•āϰāĻž āĻšāϝāĻŧ⧇āϛ⧇āĨ¤ āϤāĻŋāύāϟāĻŋ āĻŦāĻŋāĻ­āĻžāϗ⧇āϰ āĻ…āϏ⧁āĻŦāĻŋāϧāĻž āĻ¸ā§āϤāϰ⧇āϰ āĻĒāϰāĻŋāĻĒā§āϰ⧇āĻ•ā§āώāĻŋāϤ⧇ āĻ•āĻžāĻ—āϜāϟāĻŋ āĻ­āĻžāϞ āĻ­āĻžāϰāϏāĻžāĻŽā§āϝāĻĒā§‚āĻ°ā§āĻŖ āĻŦāϞ⧇āĻ“ āĻŦāϞāĻž āĻšāϝāĻŧ⧇āĻ›āĻŋāϞāĨ¤ āϏāĻ‚āĻļā§‹āϧāĻŋāϤ JEE Main āĻĒāϰ⧀āĻ•ā§āώāĻžāϰ āĻĒā§āϝāĻžāϟāĻžāĻ°ā§āύ āĻ…āύ⧁āϏāĻžāϰ⧇, āĻĒā§āϰāϤāĻŋāϟāĻŋ āĻŦāĻŋāĻ­āĻžāĻ— āĻĨ⧇āϕ⧇ āĻŽā§‹āϟ 30āϟāĻŋ āĻĒā§āϰāĻļā§āύ āϜāĻŋāĻœā§āĻžāĻžāϏāĻž āĻ•āϰāĻž āĻšāϝāĻŧ⧇āĻ›āĻŋāϞ, 25āϟāĻŋ āĻĒā§āϰāĻļā§āύ⧇āϰ āϏāĻžāĻĨ⧇ āĻĒāϰ⧀āĻ•ā§āώāĻžāĻ°ā§āĻĨā§€ āĻŦāĻŋāĻ­āĻžāϗ⧇ āĻšā§‡āĻˇā§āϟāĻž āĻ•āϰāϤ⧇ āĻšāĻŦ⧇āĨ¤ JEE Main  2022-āĻāϰ āϞāĻ•ā§āĻˇā§āϝ⧇ āĻĨāĻžāĻ•āĻž āĻĒā§āϰāĻžāĻ°ā§āĻĨā§€āϰāĻž āĻ…āύ⧁āĻļā§€āϞāύ āĻāĻŦāĻ‚ āĻŦāĻŋāĻļā§āϞ⧇āώāϪ⧇āϰ āϜāĻ¨ā§āϝ āύ⧀āĻšā§‡āϰ āϏ⧇āĻļāύ⧇āϰ āϜāĻ¨ā§āϝ āωāĻ¤ā§āϤāϰ āϕ⧀ āĻĒāĻŋāĻĄāĻŋāĻāĻĢ āϏāĻš āĻĒā§āϰāĻļā§āύāĻĒāĻ¤ā§āϰ āĻĄāĻžāωāύāϞ⧋āĻĄ āĻ•āϰāϤ⧇ āĻĒāĻžāϰ⧇āύāĨ¤

JEE Main B.E./B.Tech āĻĒā§āϰāĻļā§āύāĻĒāĻ¤ā§āϰ- āĻĢ⧇āĻŦā§āϰ⧁āϝāĻŧāĻžāϰāĻŋ 24,2021 (āĻĒā§‚āĻ°ā§āĻŦāĻžāĻšā§āύ)

JEE MAIN 2021 āĻĒā§āϰāĻļā§āύāĻĒāĻ¤ā§āϰ JEE MAIN 2021 āωāĻ¤ā§āϤāϰ āϕ⧀
PDF āĻĄāĻžāωāύāϞ⧋āĻĄ āĻ•āϰ⧁āύ PDF āĻĄāĻžāωāύāϞ⧋āĻĄ āĻ•āϰ⧁āύ


JEE Main 2021 B.E./B.Tech āĻĒā§āϰāĻļā§āύāĻĒāĻ¤ā§āϰ 24 āĻĢ⧇āĻŦā§āϰ⧁āϝāĻŧāĻžāϰāĻŋ (FN): āĻĒ⧇āĻĒāĻžāϰ āĻŦāĻŋāĻļā§āϞ⧇āώāĻŖ

JEE Main 2021 B.E./B.Tech 24 āĻĢ⧇āĻŦā§āϰ⧁āϝāĻŧāĻžāϰ⧀ āĻĢāϰ⧇āύ⧁āύ āĻĒ⧇āĻĒāĻžāϰ āϏāĻ•āĻžāϞ 9.00 āϟāĻž āĻĨ⧇āϕ⧇ āĻĻ⧁āĻĒ⧁āϰ 12.00 āĻĒāĻ°ā§āϝāĻ¨ā§āϤ āĻĒāϰāĻŋāϚāĻžāϞāĻŋāϤ āĻšāϝāĻŧ⧇āĻ›āĻŋāϞ āĻāĻŦāĻ‚ āĻŽāĻžāĻāĻžāϰāĻŋ āĻ…āϏ⧁āĻŦāĻŋāϧāĻžāϰ āĻ¸ā§āϤāϰ⧇āϰ āĻŦāϞ⧇ āϜāĻžāύāĻž āϗ⧇āϛ⧇āĨ¤

  • āϝāĻĨāĻžāϰ⧀āϤāĻŋ, āĻ—āĻŖāĻŋāϤ āĻ›āĻŋāϞ āĻĒāϰ⧀āĻ•ā§āώāĻžāϰ āϏāĻŦāĻšā§‡āϝāĻŧ⧇ āĻ•āĻ āĻŋāύ āĻ…āĻ§ā§āϝāĻžāϝāĻŧ, āϝ⧇āĻ–āĻžāύ⧇ āĻĒā§‚āĻ°ā§āĻŖāĻžāĻ™ā§āĻ— āĻāĻŦāĻ‚ āĻŦā§€āϜāĻ—āĻŖāĻŋāϤ⧇āϰ āĻĒā§āϰāĻļā§āύāϗ⧁āϞāĻŋ āĻĻā§€āĻ°ā§āϘ āĻ›āĻŋāϞāĨ¤
  • āĻ—āĻŖāĻŋāϤ⧇ āĻĒā§āϰāĻ­āĻžāĻŦāĻļāĻžāϞ⧀ āĻāĻ•āĻ• āĻ›āĻŋāϞ – āĻĄāĻŋāĻĢāĻžāϰ⧇āύāĻļāĻŋāϝāĻŧāĻžāϞ āĻ•ā§āϝāĻžāϞāϕ⧁āϞāĻžāϏ (20%), āχāĻ¨ā§āϟāĻŋāĻ—ā§āϰāĻžāϞ āĻ•ā§āϝāĻžāϞāϕ⧁āϞāĻžāϏ (20%), āĻ¸ā§āĻĨāĻžāύāĻžāĻ™ā§āĻ• āĻœā§āϝāĻžāĻŽāĻŋāϤāĻŋ (12%), āĻāĻŦāĻ‚ āϭ⧇āĻ•ā§āϟāϰ āĻāĻŦāĻ‚ 3D (12%)
  • āĻĒāĻĻāĻžāĻ°ā§āĻĨāĻŦāĻŋāĻĻā§āϝāĻž āĻŦāĻŋāĻ­āĻžāĻ—āϟāĻŋ āĻ…āĻ¨ā§āϝāĻžāĻ¨ā§āϝ āĻŦāĻŋāĻ­āĻžāϗ⧇āϰ āϤ⧁āϞāύāĻžāϝāĻŧ āϤ⧁āϞāύāĻžāĻŽā§‚āϞāĻ•āĻ­āĻžāĻŦ⧇ āϏāĻšāϜ āĻ›āĻŋāϞāĨ¤ āϝāĻĻāĻŋāĻ“ āĻ—āĻŖāύāĻž-āĻ­āĻŋāĻ¤ā§āϤāĻŋāĻ• āĻĒā§āϰāĻļā§āύ⧇āϰ āϏāĻ‚āĻ–ā§āϝāĻž āϤāĻ¤ā§āĻ¤ā§āĻŦ-āĻ­āĻŋāĻ¤ā§āϤāĻŋāĻ• āĻĒā§āϰāĻļā§āύāϗ⧁āϞāĻŋāϰ āĻšā§‡āϝāĻŧ⧇ āĻŦ⧇āĻļāĻŋ āĻ›āĻŋāϞ, āϏ⧇āϗ⧁āϞāĻŋ āĻŦ⧇āĻļāĻŋāϰāĻ­āĻžāĻ—āχ āϛ⧋āϟ āĻ›āĻŋāϞ āĻāĻŦāĻ‚ āϏāϰāĻžāϏāϰāĻŋ āϏ⧂āĻ¤ā§āϰ⧇āϰ āĻāĻ• āĻŦāĻž āĻ…āĻ¨ā§āϝ āĻ­āĻŋāĻ¨ā§āύāϤāĻž āϜāĻĄāĻŧāĻŋāϤ āĻ›āĻŋāϞāĨ¤
  • āĻĒāĻĻāĻžāĻ°ā§āĻĨāĻŦāĻŋāĻĻā§āϝāĻžāϰ āĻĒā§āϰāĻ­āĻžāĻŦāĻļāĻžāϞ⧀ āχāωāύāĻŋāϟāϗ⧁āϞāĻŋ āĻ›āĻŋāϞ āĻŽā§‡āĻ•āĻžāύāĻŋāĻ•ā§āϏ (37%) āĻāĻŦāĻ‚ āφāϧ⧁āύāĻŋāĻ• āĻĒāĻĻāĻžāĻ°ā§āĻĨāĻŦāĻŋāĻĻā§āϝāĻž (24%)āĨ¤
  • āϰāϏāĻžāϝāĻŧāύ āĻŦāĻŋāĻ­āĻžāĻ—āϟāĻŋ āĻ…āϏ⧁āĻŦāĻŋāϧāĻžāϰ āĻĻāĻŋāĻ• āĻĨ⧇āϕ⧇ āĻŦāĻŋāĻ¸ā§āĻŽāϝāĻŧāĻ•āϰ āĻ›āĻŋāϞāĨ¤ JEE āĻĒā§āϰāϧāĻžāύ āĻĒā§‚āĻ°ā§āĻŦāĻŦāĻ°ā§āϤ⧀ āĻŦāĻ›āϰ⧇āϰ āĻĒ⧇āĻĒāĻžāϰ āĻ…ā§āϝāĻžāύāĻžāϞāĻžāχāϏāĻŋāϏ āĻĻā§āĻŦāĻžāϰāĻž āĻ­āĻŦāĻŋāĻˇā§āϝāĻĻā§āĻŦāĻžāĻŖā§€ āĻ•āϰāĻž āĻĒā§āϰāĻŦāĻŖāϤāĻžāϗ⧁āϞāĻŋāϕ⧇ āĻŦāĻŋāĻĒāĻ°ā§āϝāĻ¸ā§āϤ āĻ•āϰ⧇, āϰāϏāĻžāϝāĻŧāύ āĻŦāĻŋāĻ­āĻžāĻ—āϟāĻŋ āĻĒ⧇āĻĒāĻžāϰ⧇āϰ āĻĻā§āĻŦāĻŋāϤ⧀āϝāĻŧ āϏāĻŦāĻšā§‡āϝāĻŧ⧇ āĻ•āĻ āĻŋāύ āĻŦāĻŋāĻ­āĻžāĻ— āĻ›āĻŋāϞāĨ¤
  • āϰāϏāĻžāϝāĻŧāύ āĻŦāĻŋāĻ­āĻžāϗ⧇, āĻĒā§āϰāĻ­āĻžāĻŦāĻļāĻžāϞ⧀ āχāωāύāĻŋāϟāϗ⧁āϞāĻŋ āĻ›āĻŋāϞ - āϜ⧈āĻŦ āϰāϏāĻžāϝāĻŧāύ II (30%), āϭ⧌āϤ āϰāϏāĻžāϝāĻŧāύ I (20%), āĻāĻŦāĻ‚ āϭ⧌āϤ āϰāϏāĻžāϝāĻŧāύ II (18%)
  • āĻĒā§āϰāĻļā§āύāĻĒāĻ¤ā§āϰ⧇ āĻĻā§āĻŦāĻžāĻĻāĻļ āĻļā§āϰ⧇āĻŖāĻŋāϰ āĻĒāĻžāĻ ā§āϝāϏ⧂āϚāĻŋ āĻĨ⧇āϕ⧇ āĻĒā§āϰāĻžāϝāĻŧ ā§Ēā§ŽāϟāĻŋ āĻĒā§āϰāĻļā§āύ āĻ•āϰāĻž āĻšāϝāĻŧ⧇āĻ›āĻŋāϞ āĻāĻŦāĻ‚ āĻāĻ•āĻžāĻĻāĻļ āĻļā§āϰ⧇āĻŖāĻŋāϰ āĻĒāĻžāĻ ā§āϝāϏ⧂āϚāĻŋ āĻĨ⧇āϕ⧇ āĻĒā§āϰāĻžāϝāĻŧ ā§Ē⧍āϟāĻŋ āĻĒā§āϰāĻļā§āύ āĻ•āϰāĻž āĻšāϝāĻŧ⧇āĻ›āĻŋāϞāĨ¤

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 (CxHyO2) 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:

āωāĻ¤ā§āϤāϰ āϕ⧀ āĻĒāĻŋāĻĄāĻŋāĻāĻĢ āϏāĻš JEE Main B.E/ B. āĻŸā§‡āĻ• āĻĒā§āϰāĻļā§āύāĻĒāĻ¤ā§āϰ

āĻĒāϰ⧀āĻ•ā§āώāĻžāϝāĻŧ āĻĒā§āϰāϤāĻŋāϝ⧋āĻ—āĻŋāϤāĻžāĻŽā§‚āϞāĻ• āĻ¸ā§āĻĨāĻžāύ āĻ…āĻ°ā§āϜāύ⧇āϰ āϜāĻ¨ā§āϝ JEE āĻĒā§āϰāϧāĻžāύ āĻĒā§āϰāĻļā§āύāĻĒāĻ¤ā§āϰāϗ⧁āϞāĻŋ āϏāĻŽāĻžāϧāĻžāύ āĻ•āϰāĻž āφāĻŦāĻļā§āϝāĻ•āĨ¤ āĻœā§‡āχāχ āĻĒā§āϰāϧāĻžāύ āĻĒā§‚āĻ°ā§āĻŦāĻŦāĻ°ā§āϤ⧀ āĻŦāĻ›āϰ⧇āϰ āĻĒā§āϰāĻļā§āύāĻĒāĻ¤ā§āϰ⧇āϰ āĻšā§‡āĻˇā§āϟāĻž āĻ•āϰāĻž āĻāĻ•āϜāύ āĻĒā§āϰāĻžāĻ°ā§āĻĨā§€āϕ⧇ āĻļ⧁āϧ⧁āĻŽāĻžāĻ¤ā§āϰ āϤāĻžāϰ āĻ—āϤāĻŋāϰ āωāĻ¨ā§āύāϤāĻŋāϤ⧇ āϏāĻžāĻšāĻžāĻ¯ā§āϝ āĻ•āϰāĻŦ⧇ āύāĻž āĻŦāϰāĻ‚ āϤāĻžāϰ āφāĻ¤ā§āĻŽāĻŦāĻŋāĻļā§āĻŦāĻžāϏāϕ⧇āĻ“ āĻŦāĻžāĻĄāĻŧāĻŋāϝāĻŧ⧇ āϤ⧁āϞāĻŦ⧇āĨ¤ āĻāĻ•āϟāĻŋ āĻ…āϤāĻŋāϰāĻŋāĻ•ā§āϤ āĻĒā§āϞāĻžāϏ āĻšāĻŋāϏāĻžāĻŦ⧇, āĻāĻ•āϜāύ āϤāĻžāϰ āĻĻ⧁āĻ°ā§āĻŦāϞ āĻāĻŦāĻ‚ āĻļāĻ•ā§āϤāĻŋāĻļāĻžāϞ⧀ āĻ•ā§āώ⧇āĻ¤ā§āϰāϗ⧁āϞāĻŋāϰ āϏāĻžāĻĨ⧇āĻ“ āĻĒāϰāĻŋāϚāĻŋāϤ āĻšāĻŦ⧇ āϝāĻž āĻĒāϰ⧀āĻ•ā§āώāĻžāϰ āĻšā§‚āĻĄāĻŧāĻžāĻ¨ā§āϤ āĻĒā§āϰāĻ¸ā§āϤ⧁āϤāĻŋāϤ⧇ āφāϰāĻ“ āϏāĻšāĻžāϝāĻŧāϤāĻž āĻ•āϰāĻŦ⧇āĨ¤

āĻ…āĻ¨ā§āϝāĻžāĻ¨ā§āϝ B.Tech āĻĒāϰ⧀āĻ•ā§āώāĻžāϰ āĻĒā§āϰāĻļā§āύāĻĒāĻ¤ā§āϰ

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