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Comprehensive Question Bank & Study Notes

Multiple Choice Questions

1 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1243
Consider a first order reaction: $A\to \text{products}$ . 3 different solutions are taken rate of reaction : Solution 1: $100mL~10M~'A' - r_{1}$ ; Solution 2: $200mL~10M~'A' - r_{2}$ ; Solution 3: $100mL~10M~'A' + 100ml~\text{water} - r_{3}$ . The correct order of the rates of reactions is :
(A) $r_{1}=r_{2}=r_{3}$
(B) $r_{1}=r_{2} \lt r_{3}$
(C) $r_{1}=r_{2}\gt r_{3}$
(D) $r_{1} \lt r_{2}=r_{3}$
MEDIUM
2 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1241
In organic compound with molecular formula ($X$) $C_{8}H_{9}NO$ when reacts with $KOH/Br_{2}$ forms '$P$' which on diazotization forms '$Q$' followed by its reaction with $CuCN$ forms '$R$' which on hydrolysis (acidic) formed '$S$' ($S$ can also be made by hydrolysis of original compound ($X$) ($C_{8}H_{9}NO$). $S$ on reaction with $KMnO_{4}/H^{+}$ forms '$T$' which has two types of hydrogen $X$ will be :
(A) $\text{Structure 1 (with } CH \text{ and } CONH_2 \text{ groups)}$
(B) $\text{Structure 3 (with } CH_3 \text{ and } CONH_2 \text{ groups)}$
(C) $\text{Structure 2 (with } CONH \text{ group)}$
(D) $\text{Structure 4 (with } CH_2-C-NH_2 \text{ group)}$
HARD
3 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1239
Which of the following is the correct order of the reactivity of given nucleophiles when treated with $CH_{3}$ in methanol? $F^{-}$, $I^{-}$, $C_{2}H_{5}O^{-}$, $C_{6}H_{5}O^{-}$ :
(A) $I^{-}>C_{2}H_{5}O^{-}>C_{6}H_{5}O^{-}>F^{-}$
(B) $I^{-}>F^{-}>C_{2}H_{5}O^{-}>C_{6}H_{5}O^{-}$
(C) $I^{-}>C_{2}H_{5}O^{-}>F^{-}>C_{6}H_{5}O^{-}$
(D) $C_{6}H_{5}O^{-}>F^{-}>I^{-}>C_{2}H_{5}O^{-}$
HARD
4 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1237
Statement-1: $\text{Phenol} + CHCL_{3} \xrightarrow{KOH} \text{major} + \text{minor}$. Major product is ortho substituted and para substituted product is minor . Statement-2: Ortho \& Para product can be separated by steam distillation .
(A) Both Statement-1 and Statement-2 is correct .
(B) Both Statement-1 and Statement-2 is incorrect .
(C) Statement-1 is correct but Statement-2 is incorrect .
(D) Statement-1 is incorrect but Statement-2 is correct .
HARD
5 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1236
Given below are two statements . Statement-1: $HX$ bond length is higher in $HCl$ than $HF$ . Statement-2: The lowest boiling point in hydride of group 15 element is having covalency 4 .
(A) Both Statement-1 and Statement-2 is correct .
(B) Both Statement-1 and Statement-2 is incorrect .
(C) Statement-1 is correct but Statement-2 is incorrect .
(D) Statement-1 is incorrect but Statement-2 is correct .
HARD
6 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1235
Calculate volume of $H_2$ gas at STP in $ml$. If $2.7~g$ of aluminium is treated with excess $HCl$. (Volume of 1 mole gas at $STP=22.4~L$) :
(A) 3.36
(B) 1.12
(C) 2.24
(D) 5.6
HARD
7 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1233
$XF_{3}$ (Lewis Acid), $YF_{3}$ (Lewis Base) . Hybridisation of $XF_{3}$, $YF_{3}$ respectively are :
(A) $sp^{2}, sp^{3}$
(B) $sp^{2}, sp^{2}$
(C) $sp^{3}, sp^{3}$
(D) $sp^{3}, sp^{2}$
HARD
8 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1232
Match the following and choose the correct option : \begin{tabular}{|l|l|} \hline List-1 & List-II \\ \hline (A) $[Ag(NH_{3})_{2}]^{+}$ & (i) Fehling's solution \\ \hline (B) $Zn-Hg/HCl$ & (ii) Clemmenson's reduction \\ \hline (C) $NH_{2}-NH_{2}/KOH$ & (iii) Tollen's reagent \\ \hline (D) $Cu^{2+}/OH^{-}$ & (iv) Wolff-Kishner reduction \\ \hline \end{tabular}
(A) (A)-(i), (B)-(ii), (C)-(iii), (D)-(iv)
(B) (A)-(iv), (B)-(iii), (C)-(ii), (D)-(i)
(C) (A)-(iii), (B)-(ii), (C)-(iv), (D)-(i)
(D) (A)-(i), (B)-(ii), (C)-(iv), (D)-(iii)
HARD
9 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1230
Statement-1: $NO_{2}$ is electron withdrawing group. Statement-2: Nitrobenzene is meta-directing. Statement-3: Nitrobenzene does not give Friedel Crafts alkylation :
(A) Statement-1 and Statement-2 are correct and Statement-3 incorrect .
(B) All Statements are wrong .
(C) All Statements are correct .
(D) Statement-1 and Statement-2 are incorrect and Statement-3 correct .
HARD
10 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1229
What is the formal charge of atoms numbered as 1, 2, 3 and 4. In following structure :
(A) 0, +1, 0, -1
(B) 0, 0, -, +1
(C) +1, -1, 0, 0
(D) -1, +1, 0, 0
HARD
11 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1228
Arrange following in order of $S_{N}1$ reaction : (Structures A, B, C, D are given with a $Br$ atom and $Ph$ groups) .
(A) $A>B>C>D$
(B) $D>C>B>A$
(C) $B>C>D>A$
(D) $B>A>C>D$
HARD
12 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1227
Arrange the given metal ion in increasing order of unpaired electron in low spin complexes formed by $Mn^{3+}, Cr^{3+}, Fe^{3+}, Co^{3+}$ :
(A) $Mn^{3+}\lt Cr^{3+}\lt Fe^{3+}\lt Co^{3+}$
(B) $Co^{3+}\lt Fe^{3+}\lt Mn^{3+}\lt Cr^{3+}$
(C) $Co^{3+} \lt Fe^{3+} \lt Cr^{3+} \lt Mn^{3+}$
(D) $Fe^{3+} \lt Co^{3+} \lt Mn^{3+} \lt Cr^{3+}$
HARD
13 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1226
In adiabatic compression temperature of gas becomes $4$ times while volume decreased $1/2$ times find $\gamma$ :
(A) 1
(B) 2
(C) 3
(D) 4
HARD
14 Knowledge APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1191
Consider the following statements: (A) Propanal and propanone are functional isomers; (B) Ethoxyethane and methoxypropane are metamers; (C) But-2-ene shows optical isomerism; (D) But-1-ene and but-2-ene are functional isomers; (E) Pentane and 2,2-dimethylpropane are chain isomers. The correct statements are:
(A) A, B, D only
(B) B, C, D only
(C) A, B, E only
(D) A, B, D, E only
MEDIUM
15 Knowledge REMEMBER MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1190
$C_{6}H_{12}O_{3}$ gives positive iodoform test. On hydrolysis with dilute acid, the product formed gives both Tollens' test and iodoform test. Find the correct structure.
(A) Structure 1
(B) Structure 2
(C) Structure 3
(D) Structure 4
EASY
16 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1188
Find the change in internal energy of a gas if its temperature changes by 10K. Moles=10, $C_{p}=7 cal K^{-1}mol^{-1}$, $R=2~cal~K^{-1}mol^{-1}$.
(A) $500 cal$
(B) $1000 cal$
(C) $250 cal$
(D) $100 cal$
MEDIUM
17 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1178
Which of the following resonating structures is the most stable?
(A) Structure 1
(B) Structure 2
(C) Structure 3
(D) Structure 4
MEDIUM
18 Knowledge APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1177
Given below are two statements. Statement I: All the pairs of molecules $(PbO,PbO_{2})$; $(SnO,SnO_{2})$ and $(GeO,GeO_{2})$ contain amphoteric oxides. Statement II: $AlCl_{3}$, $BH_{3}$, $BeH_{2}$ and $NO_{2}$ all have incomplete octet.
(A) Both Statement I and Statement II are correct
(B) Both Statement I and Statement II are incorrect
(C) Statement I is correct but Statement II is incorrect
(D) Statement I is incorrect but Statement II is correct
MEDIUM
19 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1171
Consider the following reaction: $Ca+2HCl \rightarrow CaCl_2+H_2$. If 14g of calcium reacts with excess HCl, choose the incorrect option.
(A) Mass of $CaCl_2$ produced is 38.85 g
(B) Moles of $H_2$ produced is 0.35 mol
(C) Volume of $H_2$ produced at STP is 7.84 L
(D) Mass of $CaCl_2$ produced is 3.885 g
MEDIUM
20 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1170
80 mL of an organic compound is mixed with 264 mL of $O_{2}$ and ignited. It gives 224 mL of gaseous mixture at NTP. After passing through KOH, 64 mL of gas remains. The organic compound is:
(A) $C_{2}H_{4}$
(B) $C_{2}H_{2}$
(C) $C_{4}H_{10}$
(D) $C_{3}H_{6}$
HARD
21 Knowledge APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1166
In the following reaction, $MnO4^{2-} \xrightarrow{H^{+}}$ ?. Manganate ion undergoes disproportionation to form:
(A) $MnO_2, MnO_4^-$
(B) $MnO_4^-, MnO_2$
(C) $MnO_2, MnO$
(D) $MnO_4^-, MnO$
MEDIUM
22 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1165
Observe the following reaction sequence: $(P)\xrightarrow{NH_{3}, \Delta}(Q)\xrightarrow{Br_{2}/KOH}(R)$. Which of the following is the correct structure for P, Q and R? (Refer to image)
(A) Option 1
(B) Option 2
(C) Option 3
(D) Option 4
MEDIUM
23 Knowledge APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1155
Given below are two statements: Statement I: Arginine and Tryptophan are essential amino acids. Statement II: Glycine does not have any chiral carbon.
(A) Both statement-I and statement-II are correct
(B) Both statement-I and statement-II are incorrect
(C) Statement-I is correct and statement-II is incorrect
(D) Statement-I is incorrect and statement-II is correct
MEDIUM
24 Knowledge APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1152
Which of the following is the correct order with respect to the property indicated?
(A) $Cl>F$ (Ionisation energy)
(B) $K_{2}O>Na_{2}O>Al_{2}O_{3}$ (Basic nature)
(C) $K>Na>Al>Mg$ (Metallic character)
(D) None of these
MEDIUM
25 Competency UNDERSTAND MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1149
An organic compound (A) undergoes the following reactions (see figure). Which of the following is compound (A)?
(A) Structure 1
(B) Structure 2
(C) Structure 3
(D) Structure 4
HARD
26 Competency APPLY MCQ_SINGLE 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1146
Correct order of acidic strength: (I) Phenol, (II) p-Cresol, (III) m-Nitrophenol, (IV) p-Nitrophenol
(A) $III>IV>II$
(B) $IV>III>II$
(C) $IV>I>III>II$
(D) $III>IV>II$
MEDIUM

NUMERICAL

1 Competency APPLY NUMERICAL 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1242
Given below are two statements . Statement-I : $K_{H}$ is constant with change in concentration of gas till solution is dilute at given temperature . Statement II: According to Henry's Law, partial pressure of gas in vapour phase is inversely proportional to mole fraction of gas in solution .
HARD
2 Competency APPLY NUMERICAL 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1240
Which of the following graph(s) is/are correct? ($P_{\text{gas}}$ vs $X_{\text{solvent}}$ is plotted) .
HARD
3 Competency APPLY NUMERICAL 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1238
The $3d$-block element which does not liberate hydrogen gas on reaction with dilute $HCl$ is .
HARD
4 Competency APPLY NUMERICAL 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1234
Find the energy to excite electron from first Bohr orbit of hydrogen atom to 2nd Bohr's orbit. (in $eV$) .
HARD
5 Competency APPLY NUMERICAL 4 Mark(s) 2026 JEE Main 2026 (Online) 22 January Morning Shift
#1231
Statement-l: Sucrose is dextrorotatory and upon hydrolysis it becomes laevorotatory . Statement-II: Sucrose on hydrolysis gives glucose and fructose such that the laevo rotation of glucose is more than dextrorotation of fructose .
HARD
6 Knowledge APPLY NUMERICAL 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1185
Out of the following, how many compounds have tetrahedral geometry? $NH4^{+}$, $XeF4$, $[NiCl4]^{2-}$, $[PtCl4]^{2-}$, $[Cu(NH3)4]^{2+}$, $BF3$, $[Ni(CO)4]$
MEDIUM
7 Competency APPLY NUMERICAL 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1184
1 g of $AB_{2}$ is dissolved in 50 g of a solvent such that $\Delta T_{f}=0.689~K.$ When 1 g of AB is dissolved in 50 g of the same solvent, $\Delta T_{f}=1.176~K$. Find the molar mass of $AB_{2}$. (Report to nearest integer).
HARD
8 Competency APPLY NUMERICAL 4 Mark(s) 2026 JEE Main 2026 (Online) 21st January Morning Shift
#1158
Benzene undergoes the following sequence of reactions (see figure). Find the percentage of nitrogen in compound (E).
HARD