IAT (IISER) 2023

\(\text { How many radial nodes does } \mathrm{Ca}^{+} \text {have in its } 4 \text { s orbital? }\)

\(\text { Which one amongst the following bases is NOT present in RNA? }\)

Amongst $\mathrm{O}_2, \mathrm{~N}_2, \mathrm{~F}_2$, and $\mathrm{B}_2$, which molecules will be attracted to an external magnetic field?

\(\text { Which amongst the following are aromatic? }\)

Which of the following compounds will NOT undergo the Finkelstein reaction with NaI via $S_N 2$ pathway?

Which one amongst the following is the most efficient way of synthesizing $n$-propyl benzene?

In aqueous solution, the hydronium ion gets further hydrated to give which of the following species?

\(\text { Which amongst the following are chiral compounds? }\)

In two solutions $X$ (hexane and benzene) and $Y$ (water and HCl ), what types of deviations from Raoult's law are observed?

Which of the following is an ore of iron?

Which parameters are plotted in the Ellingham diagram?

What is the smallest P-P-P bond angle in the highly reactive allotrope of phosphorus?

Why is it harder to compress liquids and solids relative to gases?

Related to the Freundlich adsorption isotherm, which one of the following statements is NOT correct?

Consider the following reaction: $\mathrm{CH}_4(\mathrm{~g}) \rightarrow \mathrm{C}(\mathrm{g})+4 \mathrm{H}(\mathrm{g}) ; \Delta_a H^0=1665 \mathrm{kJmol}^{-} 1$ Which of the statements is FALSE?