NTA JEE Mains 29th Jan 2024 Shift 2

The total number of molecules with zero dipole moment among $$CH_4, BF_3, H_2O, HF, NH_3, CO_2$$ and $$SO_2$$ is ______.

The total number of 'Sigma' and Pi bonds in 2-formylhex-4-enoic acid is ______.

The total number of anti bonding molecular orbitals, formed from $$2s$$ and $$2p$$ atomic orbitals in a diatomic molecule is ______.

Standard enthalpy of vapourisation for $$CCl_4$$ is $$30.5$$ kJ mol$$^{-1}$$. Heat required for vapourisation of $$284$$ g of $$CCl_4$$ at constant temperature is ______ kJ. (Given molar mass in g mol$$^{-1}$$; C = 12, Cl = 35.5)

The following concentrations were observed at $$500$$ K for the formation of $$NH_3$$ from $$N_2$$ and $$H_2$$. At equilibrium: $$[N_2] = 2 \times 10^{-2}$$ M, $$[H_2] = 3 \times 10^{-2}$$ M and $$[NH_3] = 1.5 \times 10^{-2}$$ M. Equilibrium constant for the reaction is ______.

If $$50$$ mL of $$0.5$$ M oxalic acid is required to neutralise $$25$$ mL of NaOH solution, the amount of NaOH in $$50$$ mL of given NaOH solution is ______ g.

Molality of $$0.8$$ M $$H_2SO_4$$ solution (density $$1.06$$ g cm$$^{-3}$$) is ______ $$\times 10^{-3}$$ m.

A constant current was passed through a solution of $$AuCl_4^-$$ ion between gold electrodes. After a period of $$10.0$$ minutes, the increase in mass of cathode was $$1.314$$ g. The total charge passed through the solution is ______ $$\times 10^{-2}$$ F. (Given atomic mass of Au = 197)

The half-life of radioisotopic bromine-82 is $$36$$ hours. The fraction which remains after one day is ______ $$\times 10^{-2}$$.
(Given antilog $$0.2006 = 1.587$$)

Oxidation state of Fe (Iron) in complex formed in Brown ring test.