List of top Chemistry Questions asked in AIEEE

Among the following acids which has the lowest $pK_a$ value ?

Alkyl halides react with dialkyl copper reagents to give:

During the process of electrolytic refining of copper, some metals present as impurity settle as ??node mud?

Which one of the following species is diamagnetic in nature ?

Which of the following oxides is amphoteric in character ?

Which of the following is a polyamide ?

During the process of electrolytic refining of copper, some metals present as impurity settle as ?anode mud?. These are :

Of the following sets which one does not contain isoelectronic species ?

In a multi-electron atom, which of the following orbitals ? described by the three quantum numbers will have the same energy in the absence of magnetic and electric fields ? (A) $n = 1,\,l = 0, \,m = 0$ (B) $n = 2,\,l = 0, \,m = 0$ (C) $n = 2, \,l = 1,\, m = 1$ (D) $n = 3,\,l = 2,\, m = 1$ (E) $n = 3,\,l = 2, \,m = 0$

Which one of the following statements is not true about the effect of an increase in temperature on the distribution of molecular speeds in a gas ?

The bond order in NO is 2.5 while that in $NO^+$ is 3. Which of the following statements is true for these two species ?

Which one of the following ion has the highest value of ionic radius ?

Beryllium and aluminium exhibit many properties which are similar. But, the two elements differ in

Consider the ground state of $Cr$ atom $(Z = 24)$. The number of electrons with the azimuthal quantum numbers $l =1$ and $2$ are respectively

For which of the following parameters the structural isomers $C_2H_5OH$ and $CH_3OCH_3$ would be expected to have the same values? (Assume ideal behaviour)

The half - life of a radioisotope is four hours. If the initial mass of the isotope was 200 g, the mass remaining after 24 hours undecayed is

To neutralize completely $20 \,mL$ of $0.1\, M$ aqueous solution of phosphorous acid $(H_3PO_3)$, the volume of $0.1\, M$ aqueous $KOH$ solution required is

The ammonia evolved from the treatment of 0.30 g of an organic compound for the estimation of nitrogen was passed in 100 mL of 0.1 M sulphuric acid. The excess of acid required 20 mL of 0.5 M sodium hydroxide solution hydroxide solutio for complete neutralization. The organic compound is

For the reaction, $ {CO(g) + Cl2(g) <=> COCl2(g)}$ the $\frac{K_{p}}{K_{c}}$ is equal to

What is the equilibrium expression for the reaction $ {P_{4(s)} +5O_{2(g)} <=> P4O_{10(s)}}$ ?

The smog is essentially caused by the presence of

The coordination number of a central metal atom in a complex is determined by

On mixing ethyl acetate with aqueous sodium chloride, the composition of the resultant solution is

The limiting molar conductivities $\Lambda^{\circ}$ for NaCl, KBr and KCl are 126, 152 and 150 S $cm^2\, mol^{-1}$ respectively. The $\Lambda^{\circ}$ for NaBr is