JEE Main 2026 (Online) 2nd April Morning Shift

In IUPAC nomenclature, the correct order of decreasing priority of functional group is :

For the given molecule, "x", the preferred site for the attack of the electrophile is :

Match List - I with List - II.



List - IVitamin

List - IIName


A
Vitamin B1
I
Pyridoxine


B
Vitamin B2
II
Ascorbic acid


C
Vitamin B6
III
Thiamine


...

Given below are two statements :Statement (I): The correct sequence of bond lengths in the following species is :$\ce{O2^{+}} < \ce{O2} < \ce{O2^{-}} < \ce{O2^{2-}}$Statement (II): The correct sequence of number of unpaired electrons in the...

t100% is the time required for the 100% completion of the reaction while t1/2 is the time required for 50% of the reaction to be completed. Which of the following option correctly represents the relation between t100% and t1/2 for zero and ...

For reaction A → P, rate constant $k = 1.5 \times 10^3 \ \mathrm{s}^{-1}$ at $27^{\circ}\mathrm{C}$If activation energy for the above reaction is $60\ \mathrm{kJ}\ \mathrm{mol}^{-1}$, then the temperature (in $^{\circ}\mathrm{C}$) at which ...

Consider the three aromatic molecules (P, Q and R) whose structures have been given below :The correct order regarding the reactivity of these compounds with \(\mathrm{Ph}-\underset{(+)}{\mathrm{N}} \equiv \mathrm{~N} \mathrm{Cl}^{(-)}\) ...

Match List - I with List - II.



List - I Chromium (III) Complexes (en = ethylene diamine)
List - II Δ₀ (cm⁻¹)


A
[Cr(CN)₆]³⁻
I. 15,060


B
[CrF₆]³⁻
II. 17,400


C
[Cr(H₂O)₆]³⁺
...

5.33 g of CrCl3·6H2O, which is a 1 : 3 electrolyte, is dissolved in water and is passed through a cation exchanger. The chloride ions in the eluted solution, on treatment with AgNO3 results in 8.61 g of AgCl. The ratio of moles of complex r...

Which of the following sets includes all the species that will change the orange colour of $\mathrm{K_2Cr_2O_7}$ in acidic medium?

An electrochemical cell is constructed using half cells in the direction of spontaneous change:Fe(OH)2(s) + 2e− → Fe(s) + 2OH−(aq)      Eθ = −0.88 Vand AgBr(s) + e− → Ag(s) + Br−(aq)      Eθ = +0.07 VWhich of the following option is correct...

Given below are two statements :Statement (I) : Benzyl chloride reacts faster in $S_N1$ mechanism than ethyl chloride.Statement (II) : Ethyl carbocation intermediate is less stabilized by hyperconjugation than benzyl carbocation by resonanc...

Consider the isomers of hydrocarbon with molecular formula $C_5H_{10}$. These isomers do not decolourise $KMnO_4$ solution. These isomers are subjected to chlorination with chlorine in presence of light to give monochloro compounds. The tot...

One mole of an alkane (x) requires 8 mole oxygen for complete combustion. Sum of number of carbon and hydrogen atoms in the alkane (x) is ________.

The solubility product constants of $\mathrm{Ag_2CrO_4}$ and $\mathrm{AgBr}$ are $32x$ and $4y$ respectively at 298 K.The value of \(\left( \frac{\text{molarity of } \mathrm{Ag_2CrO_4}}{\text{molarity of } \mathrm{AgBr}} \right)\) can be e...

Given below are two statements :Statement (I) : The first ionisation enthalpy of the elements Na, Mg, Cl and Ar follows the order Na > Mg > Cl > Ar.Statement (II) : Among Ca, Al, Fe and B, the third ionisation enthalpy is very high for Ca.I...

Given below are two statements :Statement (I) : 1,2,3-Trihydroxypropane can be separated from water by simple distillation.Statement (II) : An azeotropic mixture cannot be separated by fractional distillation.In the light of the above state...

Match List - I with List - II.



List - I Mixture of Compounds

List - IIReagent used to distinguish


A
Diethyl amine + Ethyl amine
I
Bromine water


B
Acetaldehyde + Acetone
II
CH...

Given below are two statements: Statement (I): Oxidising power of halogens decreases in the order $F_2 > Cl_2 > Br_2 > I_2$, which is the basis of "Layer test". Statement (II): "Layer test" to identify $Br_2$ and $I_2$ in aqueous solution i...

A salt with few drops of conc. HCl gives apple green colour in flame test. The group precipitate of the salt is dissolved in acetic acid and treated with K$_2$CrO$_4$ to give yellow precipitate. When the sodium carbonate extract of the salt...

19.5 g of fluoro acetic acid (molar mass = 78 g mol−1) is dissolved in 500 g of water at 298 K. The depression in the freezing point of water was 1∘C. What is $K_a$ of fluoro acetic acid? (For water, $K_f = 1.86$ K kg mol−1). Assume molarit...

The mass of iron converted into Fe3O4 by the action of 18 g of steam is:
(Given: Molar mass of H, O and Fe are 1, 16 and 56 g mol−1 respectively)
Assume iron is present in excess:

What is the energy (in J atom−1) required for the following process? Li2+ (g) → Li3+ (g) + e− (Take the ionization energy for the H atom in the ground state as $2.18 \times 10^{−18} \text{ J atom}^{−1}$)

Consider the following data.(i) $2\text{Al(s)} + 6\text{HCl(aq)} \rightarrow \text{Al}_2\text{Cl}_6\text{(aq)} + 3\text{H}_2\text{(g)} + 1200~\text{kJ/mol}$(ii) $\text{H}_2\text{(g)} + \text{Cl}_2\text{(g)} \rightarrow 2\text{HCl(g)} + 164~...

At the transition temperature $T$, $A \rightleftharpoons B$ and $\Delta G^0 = 105 - 35 \log T$ where A and B are two states of substance X. The transition temperature in $^{\circ}\mathrm{C}$ when pressure is 1 atm is ________. (Nearest inte...