NTA JEE Mains 6th April Shift 1 2026
For the following questions answer them individually
NTA JEE Mains 6th April Shift 1 2026 - Question 51
An oxide of iron contains 69.9% iron, its empirical formula, is:
(Given: Molar mass of Fe and O are 56 and 16 g mol$$^{-1}$$ respectively.)
NTA JEE Mains 6th April Shift 1 2026 - Question 52
If shortest wavelength of hydrogen atom in Lyman series is $$x$$, then longest wavelength in Balmer series of He$$^-$$ is:
NTA JEE Mains 6th April Shift 1 2026 - Question 53
Match the LIST-I with LIST-II
| List-I Orbital | List-II Radial nodes and nodal plane | ||
|---|---|---|---|
| A. | 2s | I. | 1 Radial node + two nodal planes |
| B. | 3s | II. | 1 Radial node + one nodal plane |
| C. | 3p | III. | 2 Radial nodes + No nodal plane |
| D. | 4d | IV. | 1 Radial node + No nodal plane |
Choose the correct answer from the options given below:
NTA JEE Mains 6th April Shift 1 2026 - Question 54
The pairs among
$$A = [SO_3^{2-}, CO_3^{2-}]$$, $$B = [O_2^{2-}, F_2]$$, $$C = [CN^-, CO]$$, $$D = [NH_3, H_3O^+]$$ and $$E = [MnO_4^{2-}, CrO_4^{2-}]$$ that do not have similar Lewis dot structure are:
NTA JEE Mains 6th April Shift 1 2026 - Question 55
Arrange the following isothermal processes in order of the magnitude of the work (p - V) involved between states 1 and 2.
A. Expansion in single stage $$w_A$$
B. Expansion in multi stages $$w_B$$
C. Compression in single stage $$w_C$$
D. Compression in multi stages $$w_D$$
Choose the correct option.
NTA JEE Mains 6th April Shift 1 2026 - Question 56
When 0.25 moles of a non-volatile, non-ionizable solute was dissolved in 1 mole of a solvent the vapor pressure of solution was $$x$$ % of vapor pressure of pure solvent. What is $$x$$ %?
NTA JEE Mains 6th April Shift 1 2026 - Question 57
One mole each of He and A(g) are taken in a 10 L closed flask and heated to 400 K to establish the following equilibrium.
A(g) $$\rightleftharpoons$$ B(g)
K$$_c$$ for this reaction at 400 K is 4.0. The partial pressures (in atm) of He and B(g) are respectively (at equilibrium)
(Assume He, A(g) and B(g) behave as ideal gases)
(Given: R = 0.082 L atm K$$^{-1}$$ mol$$^{-1}$$)
NTA JEE Mains 6th April Shift 1 2026 - Question 58
Consider the following data.
| Electrolyte | $$\Lambda^\circ_m$$ (S cm$$^2$$ mol$$^{-1}$$) |
|---|---|
| BaCl$$_2$$ | $$x_1$$ |
| H$$_2$$SO$$_4$$ | $$x_2$$ |
| HCl | $$x_3$$ |
BaSO$$_4$$ is sparingly soluble in water. If the conductivity of the saturated BaSO$$_4$$ solution is $$x$$ S cm$$^{-1}$$ then the solubility product of BaSO$$_4$$ can be given as
(Here $$\Lambda_m = \Lambda^\circ_m$$)
NTA JEE Mains 6th April Shift 1 2026 - Question 59
Given below are two statements:
Statement I: Aluminium is more electropositive than thallium as the standard electrode potential value of E$$^\circ_{Al^{3+}/Al}$$ is negative and E$$^\circ_{Tl^{3+}/Tl}$$ is positive.
Statement II: The sum of first three ionization enthalpies of boron is very high when compared to that of aluminium. Due to this reason boron forms covalent compounds only and aluminium forms Al$$^{3+}$$ ion.
In the light of the above statements, choose the correct answer from the options given below:
NTA JEE Mains 6th April Shift 1 2026 - Question 60
The correct statements among the following are.
A. Basic vanadium oxide is used in the manufacture of H$$_2$$SO$$_4$$.
B. The spin-only magnetic moment value of the transition metal halide employed in Ziegler-Natta polymerization is 2.84 BM.
C. The p-block metal compound employed in Ziegler-Natta polymerization has the metal in +3 oxidation state.
D. The number of electrons present in the outer most 'd' orbital of metal halide employed in Wacker process is 8.
Choose the correct answer from the options given below:
