List of top Chemistry Questions asked in IIT JEE

The major product of the following reaction is

The Henry?? law constant for the solubility of $N_2$ gas in water at $298\, K$ is $1.0 \times 10^5\, atm$. The mole fraction of $N_2$ in air is $0.8$. The number of moles of $N_2$ from air dissolved in $10$ moles of water at $298\, K$ and $5 \,atm$ pressure is

The species having bond order different from that in $CO$ is

NH

Number of lone pair(s') in $XeOF_4$ is/are

Which of the following pairs give positive Tollen?s test?

Mixture X= 0.02 mole of $[Co(NH_3)_5SO_4]Br $ and 0.02 mole of $[Co(NH_3)_5Br]SO_4 $ was prepared in 2 L of solution. 1 L of mixture X + excess $AgNO_3 \rightarrow Y $ 1 L of mixture X + excess $BaCI_2 \rightarrow Z $ Number of moles of Y and Z are

One mole of a non-ideal gas undergoes a change of state (2.0 atm, 3.0 L. 95 K ) $\rightarrow$ (4.0 atm. 5 0 L, 245 K) with a change in internal energy, $\Delta$E = 30.0L-atm. The change in enthalpy ($\Delta$ H) of the process in L-atm is

The common features among the species $CN^-$, CO and $NO^+$ are

The correct order of hybridisation of the central atom in the following species $NH_3$, $[PtCl_4]^{2-}$ , $PCl_5$, and $BCl_3$ is

Benzoyl chloride is prepared from benzoic acid by :

The product(s) obtained via oxymercuration $(HgSO_4+HgSO_4)$ of 1-butyne would be

The correct statement regarding defects in solids is

Which of the following compounds will show geometrical isomerism?

Which one of the following oxides is neutral?

Which of the following statements(s) is (are) correct?

When nitrobenzene is treated with $Br_2$ in the presence of $FeBr_3$ the major product formed is m-bromonitrobenzene. Statements which are related to obtain the m-isomer, are

Of the following, the metals that cannot be obtained by electrolysis of the aqueous solution of their salts are

Which one of the following is the strongest base?

Which of the following is the strongest acid?

The value of van derWaals' constant a for the gases $O_2, N_2$, $NH_3$ and $ CH_4$ are 1.360, 1.390,4.170 and $2.253L^2$ atm $mol^{-2}$ respectively. The gas which can most easily be liquefied is

Which of the following 0.1 M aqueous solution will have the lowest freezing point?

The C- H bond distance is the longest in

Keto-enol tautomerism is observed in

The hybridisation of sulphur in sulphur dioxide is