List of top Chemistry Questions asked in BITSAT

In an analytical laboratory, a $20.0\text{ mL}$ sample of an aqueous solution containing oxalic acid ($\text{H}_2\text{C}_2\text{O}_4$) requires exactly $16.0\text{ mL}$ of a $0.05\text{ M}$ potassium permanganate ($\text{KMnO}_4$) solution for complete oxidation in a hot, acidic medium ($\text{H}_2\text{SO}_4$). Calculate the molarity of the oxalic acid solution.

An octahedral coordination complex with the electronic configuration $t_{2g}^4 e_g^0$ is expected to exhibit which of the following magnetic properties and d-d transition characteristics?

A current of $2.0\text{ A}$ is passed for 5 hours through an electrolytic cell containing an aqueous solution of a metal salt, depositing $12.0\text{ g}$ of the metal at the cathode. If the atomic mass of the metal is $193\text{ g mol}^{-1}$, find the oxidation state of the metal ion in the solution. (Take Faraday's constant $F = 96500\text{ C mol}^{-1}$).

A radioactive sample has a half-life of 10 days. The fraction of the initial nuclei decayed after 40 days is:

The solubility of $\text{Pb(OH)}_2$ in water is $6.7 \times 10^{-6}\text{ M}$. Its solubility in a buffer solution of $\text{pH} = 8$ would be:

According to Bohr's model of the hydrogen atom, the ratio of the kinetic energy to the total energy of an electron in $3^{\text{rd}}$ excited state is?

A decimolar solution of potassium ferrocyanide is $50\%$ dissociated at $300\text{K}$. The osmotic pressure of the solution is $(\text{R} = 8.314 \text{ JK}^{-1}\text{mol}^{-1})$

$0.1\text{ m}$ of urea and $0.05\text{ m}$ of $\text{CaCl}_2$ are dissolved separately in equal volumes of water. Which solution will have higher elevation in boiling point?

If the ionic product of $\text{Ni(OH)}_2$ is $1.9 \times 10^{-15}$, then the molar solubility of $\text{Ni(OH)}_2$ in $1.0\text{ M NaOH}$ is

For the reaction CO(g) + $\frac{1}{2}$ O$_2$(g) $\rightarrow$ CO$_2$(g) Which one of the statement is correct at constant T and P?

Chloride ion and potassium ion are isoelectronic. Then

The screening effect of d-electrons is

In $ PO_4^{3-} $, the formal charge on each oxygen atom and the P - O bond order respectively are

The Bohr orbit radius for the hydrogen atom (n = 1) is approximately 0.530 \AA. The radius for the first excited state (n = 2) orbit is (in \AA)

0.009 g of CaCO$_3$ is dissolved in 1 litre of solution. Calculate the concentration of the solution in parts per million (ppm).