NTA JEE Mains 29th Jan 2025 Shift 2

The calculated spin-only magnetic moments of $$K_3[Fe(OH)_6]$$ and $$K_4[Fe(OH)_6]$$ respectively are :

The type of oxide formed by the element among Li, Na, Be, Mg, B and Al that has the least atomic radius is :

Total number of sigma ($$\sigma$$) and pi($$\pi$$) bonds respectively present in hex-1-en-4-yne are :

First ionisation enthalpy values of first four group 15 elements are given below. Choose the correct value for the element that is a main component of apatite family :

Given below are two statements : Statement (I) : On nitration of m-xylene with $$HNO_{3}$$, $$H_{2}SO_{4}$$ followed by oxidation, 4-nitrobenzene-1,3-dicarboxylic acid is obtained as the major product. Statement (II) : $$-CH_{3}$$ group is o/p-directing while $$-NO_{2}$$ group is m-directing group. In the light of the above statements, choose the correct answer from the options given below :

Which among the following halides will generate the most stable carbocation in the nucleophilic substitution reaction?

Given below are two statements : Statement (I) : It is impossible to specify simultaneously with arbitrary precision, both the linear momentum and the position of a particle. Statement (II) : If the uncertainty in the measurement of position and uncertainty in measurement of momentum are equal for an electron, then the uncertainty in the measurement of velocity is $$\ge \sqrt{\frac{h}{\pi} \times \frac{1}{2m}}$$. In the light of the above statements, choose the correct answer from the options given below :

0.1 M solution of KI reacts with excess of $$H_{2}SO_{4}$$ and $$KIO{3}$$ solutions. According to equation $$5I^- + IO_3^- + 6H^+ \rightarrow 3I_2 + 3H_2O$$ Identify the correct statements : (A) 200 mL of KI solution reacts with 0.004 mol of $$KIO_{3}$$ (B) 200 mL of KI solution reacts with 0.006 mol of $$H_{2}SO_{4}$$ (C) 0.5 L of KI solution produced 0.005 mol of $$I_{2}$$ (D) Equivalent weight of $$KIO_{3}$$ is equal to ( $$\frac{Molecular weight}{5}$$ ) Choose the correct answer from the options given below :

Given below are two statements : Statement (I): In partition chromatography, stationary phase is thin film of liquid present in the inert support. Statement (II) : In paper chromatography, the material of paper acts as a stationary phase. In the light of the above statements, choose the correct answer from the options given below :

If $$C(\text{diamond}) \rightarrow C(\text{graphite}) + X\,\text{kJ mol}^{-1} C(\text{diamond}) + O_2(g) \rightarrow CO_2(g) + Y\,\text{kJ mol}^{-1}C(\text{graphite}) + O_2(g) \rightarrow CO_2(g) + Z\,\text{kJ mol}^{-1}$$ at constant temperature. Then