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

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JEE Main 2021 B.E./B.Tech āĻĒā§āĻ°āĻļā§āĻ¨āĻĒāĻ¤ā§āĻ° - 24 āĻĢā§‡āĻŦā§āĻ°ā§āĻ¯āĻŧāĻžāĻ°ā§€, 2021- āĻĒā§āĻ°āĻžāĻ°āĻŽā§āĻ­āĻŋāĻ• āĻ…āĻ§āĻŋāĻŦā§‡āĻļāĻ¨ āĻ›āĻžāĻ¤ā§āĻ° āĻāĻŦāĻ‚ āĻŦāĻŋāĻļā§‡āĻˇāĻœā§āĻžāĻĻā§‡āĻ° āĻĻā§āĻŦāĻžāĻ°āĻž āĻ¸āĻžāĻŽāĻ—ā§āĻ°āĻŋāĻ• āĻ…āĻ¸ā§āĻŦāĻŋāĻ§āĻžāĻ° āĻĒāĻ°āĻŋāĻĒā§āĻ°ā§‡āĻ•ā§āĻˇāĻŋāĻ¤ā§‡ āĻŽāĻ§ā§āĻ¯āĻŽ āĻ°ā§‡āĻŸ āĻ•āĻ°āĻž āĻšāĻ¯āĻŧā§‡āĻ›ā§‡āĨ¤ āĻ¤āĻŋāĻ¨āĻŸāĻŋ āĻŦāĻŋāĻ­āĻžāĻ—ā§‡āĻ° āĻ…āĻ¸ā§āĻŦāĻŋāĻ§āĻž āĻ¸ā§āĻ¤āĻ°ā§‡āĻ° āĻĒāĻ°āĻŋāĻĒā§āĻ°ā§‡āĻ•ā§āĻˇāĻŋāĻ¤ā§‡ āĻ•āĻžāĻ—āĻœāĻŸāĻŋ āĻ­āĻžāĻ˛ āĻ­āĻžāĻ°āĻ¸āĻžāĻŽā§āĻ¯āĻĒā§‚āĻ°ā§āĻŖ āĻŦāĻ˛ā§‡āĻ“ āĻŦāĻ˛āĻž āĻšāĻ¯āĻŧā§‡āĻ›āĻŋāĻ˛āĨ¤ āĻ¸āĻ‚āĻļā§‹āĻ§āĻŋāĻ¤ JEE Main āĻĒāĻ°ā§€āĻ•ā§āĻˇāĻžāĻ° āĻĒā§āĻ¯āĻžāĻŸāĻžāĻ°ā§āĻ¨ āĻ…āĻ¨ā§āĻ¸āĻžāĻ°ā§‡, āĻĒā§āĻ°āĻ¤āĻŋāĻŸāĻŋ āĻŦāĻŋāĻ­āĻžāĻ— āĻĨā§‡āĻ•ā§‡ āĻŽā§‹āĻŸ 30āĻŸāĻŋ āĻĒā§āĻ°āĻļā§āĻ¨ āĻœāĻŋāĻœā§āĻžāĻžāĻ¸āĻž āĻ•āĻ°āĻž āĻšāĻ¯āĻŧā§‡āĻ›āĻŋāĻ˛, 25āĻŸāĻŋ āĻĒā§āĻ°āĻļā§āĻ¨ā§‡āĻ° āĻ¸āĻžāĻĨā§‡ āĻĒāĻ°ā§€āĻ•ā§āĻˇāĻžāĻ°ā§āĻĨā§€ āĻŦāĻŋāĻ­āĻžāĻ—ā§‡ āĻšā§‡āĻˇā§āĻŸāĻž āĻ•āĻ°āĻ¤ā§‡ āĻšāĻŦā§‡āĨ¤ JEE Main  2022-āĻāĻ° āĻ˛āĻ•ā§āĻˇā§āĻ¯ā§‡ āĻĨāĻžāĻ•āĻž āĻĒā§āĻ°āĻžāĻ°ā§āĻĨā§€āĻ°āĻž āĻ…āĻ¨ā§āĻļā§€āĻ˛āĻ¨ āĻāĻŦāĻ‚ āĻŦāĻŋāĻļā§āĻ˛ā§‡āĻˇāĻŖā§‡āĻ° āĻœāĻ¨ā§āĻ¯ āĻ¨ā§€āĻšā§‡āĻ° āĻ¸ā§‡āĻļāĻ¨ā§‡āĻ° āĻœāĻ¨ā§āĻ¯ āĻ‰āĻ¤ā§āĻ¤āĻ° āĻ•ā§€ āĻĒāĻŋāĻĄāĻŋāĻāĻĢ āĻ¸āĻš āĻĒā§āĻ°āĻļā§āĻ¨āĻĒāĻ¤ā§āĻ° āĻĄāĻžāĻ‰āĻ¨āĻ˛ā§‹āĻĄ āĻ•āĻ°āĻ¤ā§‡ āĻĒāĻžāĻ°ā§‡āĻ¨āĨ¤

JEE Main B.E./B.Tech āĻĒā§āĻ°āĻļā§āĻ¨āĻĒāĻ¤ā§āĻ°- āĻĢā§‡āĻŦā§āĻ°ā§āĻ¯āĻŧāĻžāĻ°āĻŋ 24,2021 (āĻĒā§‚āĻ°ā§āĻŦāĻžāĻšā§āĻ¨)

JEE MAIN 2021 āĻĒā§āĻ°āĻļā§āĻ¨āĻĒāĻ¤ā§āĻ° JEE MAIN 2021 āĻ‰āĻ¤ā§āĻ¤āĻ° āĻ•ā§€
PDF āĻĄāĻžāĻ‰āĻ¨āĻ˛ā§‹āĻĄ āĻ•āĻ°ā§āĻ¨ PDF āĻĄāĻžāĻ‰āĻ¨āĻ˛ā§‹āĻĄ āĻ•āĻ°ā§āĻ¨


JEE Main 2021 B.E./B.Tech āĻĒā§āĻ°āĻļā§āĻ¨āĻĒāĻ¤ā§āĻ° 24 āĻĢā§‡āĻŦā§āĻ°ā§āĻ¯āĻŧāĻžāĻ°āĻŋ (FN): āĻĒā§‡āĻĒāĻžāĻ° āĻŦāĻŋāĻļā§āĻ˛ā§‡āĻˇāĻŖ

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  • āĻ—āĻŖāĻŋāĻ¤ā§‡ āĻĒā§āĻ°āĻ­āĻžāĻŦāĻļāĻžāĻ˛ā§€ āĻāĻ•āĻ• āĻ›āĻŋāĻ˛ – āĻĄāĻŋāĻĢāĻžāĻ°ā§‡āĻ¨āĻļāĻŋāĻ¯āĻŧāĻžāĻ˛ āĻ•ā§āĻ¯āĻžāĻ˛āĻ•ā§āĻ˛āĻžāĻ¸ (20%), āĻ‡āĻ¨ā§āĻŸāĻŋāĻ—ā§āĻ°āĻžāĻ˛ āĻ•ā§āĻ¯āĻžāĻ˛āĻ•ā§āĻ˛āĻžāĻ¸ (20%), āĻ¸ā§āĻĨāĻžāĻ¨āĻžāĻ™ā§āĻ• āĻœā§āĻ¯āĻžāĻŽāĻŋāĻ¤āĻŋ (12%), āĻāĻŦāĻ‚ āĻ­ā§‡āĻ•ā§āĻŸāĻ° āĻāĻŦāĻ‚ 3D (12%)
  • āĻĒāĻĻāĻžāĻ°ā§āĻĨāĻŦāĻŋāĻĻā§āĻ¯āĻž āĻŦāĻŋāĻ­āĻžāĻ—āĻŸāĻŋ āĻ…āĻ¨ā§āĻ¯āĻžāĻ¨ā§āĻ¯ āĻŦāĻŋāĻ­āĻžāĻ—ā§‡āĻ° āĻ¤ā§āĻ˛āĻ¨āĻžāĻ¯āĻŧ āĻ¤ā§āĻ˛āĻ¨āĻžāĻŽā§‚āĻ˛āĻ•āĻ­āĻžāĻŦā§‡ āĻ¸āĻšāĻœ āĻ›āĻŋāĻ˛āĨ¤ āĻ¯āĻĻāĻŋāĻ“ āĻ—āĻŖāĻ¨āĻž-āĻ­āĻŋāĻ¤ā§āĻ¤āĻŋāĻ• āĻĒā§āĻ°āĻļā§āĻ¨ā§‡āĻ° āĻ¸āĻ‚āĻ–ā§āĻ¯āĻž āĻ¤āĻ¤ā§āĻ¤ā§āĻŦ-āĻ­āĻŋāĻ¤ā§āĻ¤āĻŋāĻ• āĻĒā§āĻ°āĻļā§āĻ¨āĻ—ā§āĻ˛āĻŋāĻ° āĻšā§‡āĻ¯āĻŧā§‡ āĻŦā§‡āĻļāĻŋ āĻ›āĻŋāĻ˛, āĻ¸ā§‡āĻ—ā§āĻ˛āĻŋ āĻŦā§‡āĻļāĻŋāĻ°āĻ­āĻžāĻ—āĻ‡ āĻ›ā§‹āĻŸ āĻ›āĻŋāĻ˛ āĻāĻŦāĻ‚ āĻ¸āĻ°āĻžāĻ¸āĻ°āĻŋ āĻ¸ā§‚āĻ¤ā§āĻ°ā§‡āĻ° āĻāĻ• āĻŦāĻž āĻ…āĻ¨ā§āĻ¯ āĻ­āĻŋāĻ¨ā§āĻ¨āĻ¤āĻž āĻœāĻĄāĻŧāĻŋāĻ¤ āĻ›āĻŋāĻ˛āĨ¤
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  • āĻ°āĻ¸āĻžāĻ¯āĻŧāĻ¨ āĻŦāĻŋāĻ­āĻžāĻ—ā§‡, āĻĒā§āĻ°āĻ­āĻžāĻŦāĻļāĻžāĻ˛ā§€ āĻ‡āĻ‰āĻ¨āĻŋāĻŸāĻ—ā§āĻ˛āĻŋ āĻ›āĻŋāĻ˛ - āĻœā§ˆāĻŦ āĻ°āĻ¸āĻžāĻ¯āĻŧāĻ¨ II (30%), āĻ­ā§ŒāĻ¤ āĻ°āĻ¸āĻžāĻ¯āĻŧāĻ¨ I (20%), āĻāĻŦāĻ‚ āĻ­ā§ŒāĻ¤ āĻ°āĻ¸āĻžāĻ¯āĻŧāĻ¨ II (18%)
  • āĻĒā§āĻ°āĻļā§āĻ¨āĻĒāĻ¤ā§āĻ°ā§‡ āĻĻā§āĻŦāĻžāĻĻāĻļ āĻļā§āĻ°ā§‡āĻŖāĻŋāĻ° āĻĒāĻžāĻ ā§āĻ¯āĻ¸ā§‚āĻšāĻŋ āĻĨā§‡āĻ•ā§‡ āĻĒā§āĻ°āĻžāĻ¯āĻŧ ā§Ēā§ŽāĻŸāĻŋ āĻĒā§āĻ°āĻļā§āĻ¨ āĻ•āĻ°āĻž āĻšāĻ¯āĻŧā§‡āĻ›āĻŋāĻ˛ āĻāĻŦāĻ‚ āĻāĻ•āĻžāĻĻāĻļ āĻļā§āĻ°ā§‡āĻŖāĻŋāĻ° āĻĒāĻžāĻ ā§āĻ¯āĻ¸ā§‚āĻšāĻŋ āĻĨā§‡āĻ•ā§‡ āĻĒā§āĻ°āĻžāĻ¯āĻŧ ā§Ēā§¨āĻŸāĻŋ āĻĒā§āĻ°āĻļā§āĻ¨ āĻ•āĻ°āĻž āĻšāĻ¯āĻŧā§‡āĻ›āĻŋāĻ˛āĨ¤

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:

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