NTA JEE Main 10th April 2023 Shift 1

The number of bent-shaped molecule/s from the following is _______ N$$_3^-$$, NO$$_2$$, I$$_3^-$$, O$$_3$$, SO$$_2$$

The sum of lone pairs present on the central atom of the interhalogen IF$$_5$$ and IF$$_7$$ is _______.

At constant temperature, a gas is at a pressure of 940.3 mm Hg. The pressure at which its volume decreases by 40% is _______ mm Hg. (Nearest integer)

$$FeO_4^{2-} \xrightarrow{+2.2 V} Fe^{3+} \xrightarrow{+0.70 V} Fe^{2+} \xrightarrow{-0.45 V} Fe^0$$
$$E^0_{FeO_4^{2-}/Fe^{2+}}$$ is $$x \times 10^{-3}$$ V. The value of x is _______.

The number of incorrect statement/s about the black body from the following is _______.
(A) Emit or absorb energy in the form of electromagnetic radiation.
(B) Frequency distribution of the emitted radiation depends on temperature.
(C) At a given temperature, intensity vs frequency curve passes through a maximum value.
(D) The maximum of the intensity vs frequency curve is at a higher frequency at higher temperature compared to that at lower temperature.

The number of correct statement/s involving equilibria in physical processes from the following is _______.
(A) Equilibrium is possible only in a closed system at a given temperature.
(B) Both the opposing processes occur at the same rate.
(C) When equilibrium is attained at a given temperature, the value of all its parameters became equal
(D) For dissolution of solids in liquids, the solubility is constant at a given temperature.

In the following reaction, the total number of oxygen atoms in X and Y is _______.
Na$$_2$$O + H$$_2$$O $$\to$$ 2X
Cl$$_2$$O$$_7$$ + H$$_2$$O $$\to$$ 2Y

If the degree of dissociation of aqueous solution of weak monobasic acid is determined to be 0.3, then the observed freezing point will be _______ % higher than the expected/theoretical freezing point. (Nearest integer).

A molecule undergoes two independent first order reactions whose respective half lives are 12 min and 3 min. If both the reactions are occurring then the time taken for the 50% consumption of the reactant is _______ min. (Nearest integer)

In potassium ferrocyanide, there are _______ pairs of electrons in the t$$_{2g}$$ set of orbitals.