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JEE Main Chemistry Most Expected Questions 2025 (Image Credit: iStock)JEE Main Chemistry Most Expected Questions 2025 : To succeed in JEE Main Chemistry, a strategic approach is essential. To support this, we've compiled the Most Expected Questions for 2025 below. Please note that while these questions are highly likely to be relevant, the actual exam questions may vary in wording. Value-based questions may be rephrased, with the emphasis remaining on the same core concept. By focusing on these anticipated questions, students can refine their study plan and identify knowledge gaps, enhance problem-solving skills and build confidence, and develop a strategic approach to the exam. Effective preparation with these questions is crucial for achieving high scores and gaining admission to top engineering colleges.
Also Read | Mathematics Chapter-Wise Number of Questions Asked in JEE Main 2025 Session 1
JEE Main Chemistry Most Expected Questions 2025
Students can practice the most expected questions for JEE Mains 2025 Chemistry exam based on last year’s patterns to improve their scores.
S.No. | Questions |
|---|---|
1 | The number of molecules/ions that show linear geometry among the following is __________. SO 2 , BeCl 2 , CO 2 , N 3 – , NO 2 , F 2 O, XeF 2 , NO 2 + , I 3 – , O 3 |
2 |
Which of the following statement is true with respect to H
2
O, NH
3
and CH
4
?
A. The central atoms of all the molecules are sp³ hybridized. B. The H-O-H, H-N-H and H-C-H angles in the above molecules are 104.5°, 107.5° and 109.5°, respectively. C. The increasing order of dipole moment is CH 4 < NH 3 < H 2 O. D. Both H 2 O and NH 3 are Lewis acids and CH 4 is a Lewis base. E. A solution of NH 3 in H 2 O is basic. In this solution NH 3 and H 2 O act as Lowry-Bronsted acid and base respectively. |
3 |
Choose the correct answer from the options given below:
A. A, D, and E only B. C, D, and E only C. A, B, and C only D. A, B, C, and E only |
4 | The number of non-polar molecules from the following is HF, H 2 O, SO 2 , H 2, CO 2 , CH 4 , NH 3 , HCl, CHCl 3 , BF 3 |
5 | Total number of molecules/species from following which will be paramagnetic is __________. O 2 , O 2 + , O 2 – , NO, NO 2 , CO, K 2 [NiCl 4 ], [Co(NH 3 ) 6 ]Cl 3 , K 2 [Ni(CN) 4 ] |
6 |
Statement I : Dipole moment is a vector quantity and by convention it is depicted by a small arrow with tail on the negative centre and head pointing towards the positive centre.
Statement II : The crossed arrow of the dipole moment symbolizes the direction of the shift of charges in the molecules. A. Both Statement I and Statement II are correct. B. Statement I is correct but Statement II is incorrect. C. Both Statement I and Statement II are incorrect. D. Statement I is incorrect but Statement II is correct |
7 |
The order of relative stability of the contributing structure is: Choose the correct answer from the options given below:
A. I = II = III B. I > II > III C. III > II > I D. II > I > III |
8 | 2.8 × 10 -3 mol of CO 2 is left after removing 10 21 molecules from its ‘x’ mg sample. The mass of CO 2 taken initially is Given: N A = 6.02 × 10 23 mol -1 |
9 | The moles of methane required to produce 81 g of water after complete combustion is _____ × 10 -2 mol. [nearest integer] |
10 |
A solution is prepared by adding 2g of "X" in 1 mole of water. Mass percent of "X" in the solution is
A. 20% B. 10% C. 2% D. 5% |
11 |
Quantitative analysis of an organic compound (X) shows following % composition.
C: 14.5% Cl: 64.46% H: 1.8% (Empirical formula mass of the compound (X) is ___ × 10 -1 (Given molar mass in g mol -1 of C:12, H:1, O:16, Cl: 35.5) |
12 |
On electrolysis of dil. H
2
SO
4
using Pt-electrode, the product obtained at anode will be:
A. H 2 S gas B. SO 2 C. H 2 gas D. O 2 gas |
13 |
By the electrolysis of aq. solution of CuSO
4
, the products obtained at both electrodes are
A. O 2 at anode and H 2 at cathode B. H 2 at anode and Cu at cathode C. O 2 at anode and Cu at cathode D. H 2 S 2 O 8 at anode and O 2 at cathode |
14 |
The molar conductivities at infinite dilution of KCl, HCl and CH3COOK are 130.1, 379.4, 95 mho cm
2
/mol, respectively. Calculate molar conductivity at infinite dilution of CH
3
COOH.
A. 154.3 B. 604.3 C. 344.3 D. 414.5 |
15 |
Diamagnetic Lanthanoid ions are:
A. La³+ and Ce 4+ B. Nd³+ and Ce 4+ C. Lu³+ and Eu 3+ D. Nd³+ and Eu 3+ |
16 |
In the structure of the dichromate ion, there is a:
A. Linear symmetrical Cr-O-Cr bond B. Non-linear symmetrical Cr-O-Cr bond C. Linear unsymmetrical Cr-O-Cr bond D. Non-linear unsymmetrical Cr-O-Cr bond |
17 |
The primary and secondary valencies of cobalt respectively in [Co(NH
3
)
5
Cl]Cl
2
are:
A. 3 and 5 B. 2 and 6 C. 2 and 8 D. 3 and 6 |
18 |
The conditions and consequences that favours the t2g3 eg1 configuration in a metal complex are:
A. strong field ligand, low spin complex B. strong field ligand, high spin complex C. weak field ligand, high spin complex D. weak field ligand, low spin complex |
19 |
The IUPAC name of an element with atomic number 119 is
A. ununennium B. unnilennium C. unununnium D. ununoctium |
20 |
The five successive IE of an element are 800, 2427, 3658, 25024 and 32824 kJ mol
–1
. The number of valence electrons in the element is:
A. 5 B. 4 C. 3 D. 2 |
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