NTA JEE Mains 04th April 2024 Shift 2

The maximum number of orbitals which can be identified with $$n = 4$$ and $$m_l = 0$$ is ______

Number of compounds/species from the following with non-zero dipole moment is ______. $$BeCl_2, BCl_3, NF_3, XeF_4, CCl_4, H_2O, H_2S, HBr, CO_2, H_2, HCl$$

Three moles of an ideal gas are compressed isothermally from $$60$$ L to $$20$$ L using constant pressure of $$5$$ atm. Heat exchange $$Q$$ for the compression is $$-$$ ______ Lit. atm.

The total number of 'sigma' and 'Pi' bonds in 2-oxohex-4-ynoic acid is ______

$$2.7$$ kg of each of water and acetic acid are mixed. The freezing point of the solution will be $$-x°C$$. Consider the acetic acid does not dimerise in water, nor dissociates in water. $$x =$$ ______ (nearest integer) [Given: Molar mass of water $$= 18$$ g mol$$^{-1}$$, acetic acid $$= 60$$ g mol$$^{-1}$$, $$K_f$$ H$$_2$$O: $$1.86$$ K kg mol$$^{-1}$$, $$K_f$$ acetic acid: $$3.90$$ K kg mol$$^{-1}$$, freezing point: H$$_2$$O $$= 273$$ K, acetic acid $$= 290$$ K]

Consider the following reaction, the rate expression of which is given below: 

$$A + B \rightarrow C$$, rate$$ = k[A]^{1/2}[B]^{1/2}$$.
The reaction is initiated by taking concentration of $$1$$M of $$A$$ and $$B$$ each. If the rate constant $$(k)$$ is $$4.6 \times 10^{-2}$$ s$$^{-1}$$, then the time taken for $$A$$ to become $$0.1$$M is ______ sec. (nearest integer)

A first row transition metal with highest enthalpy of atomisation, upon reaction with oxygen at high temperature forms oxides of formula $$M_2O_n$$ (where $$n = 3, 4, 5$$). The 'spin-only' magnetic moment value of the amphoteric oxide from the above oxides is ______ BM (nearest integer). (Given atomic number: Sc: 21, Ti: 22, V: 23, Cr: 24, Mn: 25, Fe: 26, Co: 27, Ni: 28, Cu: 29, Zn: 30)

Phthalimide is made to undergo following sequence of reactions:

 Total number of $$\pi$$ bonds present in product 'P' is/are ______

From $$6.55$$ g of aniline, the maximum amount of acetanilide that can be prepared will be ______ $$\times 10^{-1}$$ g.

Vanillin compound obtained from vanilla beans, has total sum of oxygen atoms and $$\pi$$ electrons is ______