List of top Chemistry Questions asked in BITSAT

When $25\, g$ of a non-volatile solute is dissolved in $100\,g$ of water, the vapour pressure is lowered by $2.25 \times 10^{-1}\, mm$. If the vapour pressure of water at $20^{\circ} C$ is $17.5\, mm$, what is the molecular weight of the solute?

The bond length of $HCl$ molecule is $1.275\,?$ and its dipole moment is $1.03\, D$. The ionic character of the molecule (in percent) (charge of the electron $= 4.8 \times 10^{-10}$ esu) is

Which one of the following is a correct set?

If $\overline{ M _{ W }}$ is the weight average molecular weight and $\overline{ M _{ n }}$ is the number average molecular weight of a polymer, the poly dispersity index (PDI) of the polymer is given by:

Which one of the following graphs represents "Freundlich adsorption isotherm'' ?

What is the temperature at which the kinetic energy of $0.3$ moles of helium is equal to the kinetic energy of $0.4$ moles of argon -at $400\, K$ ?

When same quantity of electricity is passed through aqueous $AgNO_3$ and $H_2SO_4$ solutions connected in series, $ 5.04 \times 10^{-2} \, g $ of $H_2$ is liberated. What is the mass of silver (in grams) deposited? (E wts. of hydrogen = $ 1.008,$ silver = $108$)

When electric current is passed through acidified water for $1930\, s,\, 1120\, mL$ of $H_2$ gas is collected (at STP) at the cathode. What is the current passed in amperes?

Identify $A$ and $B$ in the following reaction $CH _{3}- CH _{3} \stackrel{B}{\leftarrow}{B} CH _{3} COOH \xrightarrow{A} CH _{3} CH _{2} OH$

Which of the following correspond $(s)$ has '$Z$' configuration?

According to Cahn-Ingold-Prelog sequence rules, the correct order of priority for the given groups is

The velocities of two particles $A$ and $B$ are $0.05$ and $0.02\, ms^{-1}$ respectively. The mass of $B$ is five times the mass of $A$. The ratio of their de- Broglie's wavelength is

The structure of the compound formed, when nitrobenzene is reduced by lithium aluminum hydride \((LiAlH_4)\) is

Given standard electrode potentials $Fe ^{2}:+2 e ^{-} \longrightarrow Fe E ^{\circ}=-0 \cdot 440 \,V$ $Fe ^{3+}+3 e ^{-} \longrightarrow Fe E ^{\circ}=-0 \cdot 036\, V$ The standard electrode potential $\left(E^{\circ}\right)$ for $Fe ^{3+}+ e ^{-} \longrightarrow Fe ^{2+}$ is :

Setting of plaster of Peris involves

In the below reaction $x$ is.

A solution of sucrose (Molar mass = $342\,g/mol$) is prepared by dissolving $68.4\, g$ of it per litre of solution, what is its osmotic pressure ($R = 0.082 \,L$ atom $K^{-1}$ $mol^{-1}$) at $273\, K$?

For a reaction equilibrium, $N _{2} O _{4}( g ) \rightleftharpoons 2 NO _{2}( g )$, the concentrations of $N _{2} O _{4}$ and $NO _{2}$ at equilibrium are $4.8 \times 10^{-2}$ and $1.2 \times 10^{-2}\, mol / L$ respectively. The value of $k$, for the reaction is:

The ratio of $Fe _{2} O _{3}$ and $Al$, in thermite is:

The relative humidity on a day when partial pressure of water vapour is $0.012 \times 10^{5} Pa$ at $12^{\circ} C$ is (Take vapour pressure of water at this temperature as $0.016 \times 10^{5}Pa)$

$H_2O_2$ used in rocket has the concentration

Which of the following ketones will not respond to iodoform test?

Which of the most volatile compounds?

Tautomerism is exhibited by

The compound which gives the most stable carbonium ion on dehydration is