List of top Chemistry Questions

Human blood has an osmotic pressure of 7 .65 atm. at body temperature (37$^\circ$C). Hence molarity of an to have same osmotic pressure,will be

If 0.5 m solution of $Ca(NO_3)_2$ and 0.75 m solution of KOH is taken, then the depression in freezing point is

If 100 mL of 10 M NaOH solution is diluted to 1.0 L,the resulting solution contains

If 5.85 g of NaCl are dissolved in 90 g of water, the mole fraction of NaCl is

In a 0.2 molal aqueous solution of a weak acid HX the degree of ionization is 0.3. Taking $K_f$ for water as 1.85, the freezing point of the solution will be nearest to

$K_H$ values for $Ar_(g)$, $CO_{2(g)}$, $HCHO_{(g)}$ and $CH_{4(g)}$ are $40.39$, $1.67$, $1.83 \times 10^{-5}$ and $0.413$ respectively. Arrange these gases in the order of their increasing solubility.

Low concentration of oxygen in the blood and tissues of people living at high altitude is due to ___________.

Moles of $K_2SO_4$ to be dissolved in 12 moles of water to lower its vapour pressure by 10 mm Hgat a temperature at which vapour pressure of pure water is 50 mmHg is

Out Of NaCl, ZnS, CaF2 and CsCl, in which case the cations form ccp structure?

Out of the following the NOT reversible process is

Scattering of light takes place in

The final molarity of a solution made by mixing $50\, mL$ of $0.5\, M \,HCl,\, 150 \,mL$ of $0.25\, M\, HCl$ and water to make the volume $250\, mL$ is

The increase in the value of molar conductivity of acetic acid with dilution is due to

The quantity of electricity required to liberate 0.01 g equivalent of an element at the electrode is

The relative lowering of vapour pressure is equal to the mole fraction of the solute. This law is called

The size of colloidal particles is in between

The solubility of $CO_2$ in water increases with

The solubility product of $AgCl$ is $1.5625 \times 10^{-10}$ at $25 \,^{\circ}C$. Its solubility in grams per litre will be

The solubility product of AgCl is $4.0 \times 10^{-10}$ at 298 K. The solubility of AgCl in 0.04 M $CaCl_2$ will be

The solubility product of $Al_2(SO_4 )_3$ is given by the expression

The solubility product of barium sulphate is $1.5 \times 10^{-9}$ at 18$^\circ$C. Its solubility in water at 18$^\circ$C is

The solutions having same osmotic pressure w.r.t. same semi-permeable membrane are called

The substance A when dissolved in solvent B shows the molecular mass corresponding to $A_3$. The vant Hoff factor will be

The value of Henry?? law constant for some gases at $293\, K$ is given below. Arrange the gases in the increasing order of their solubility. $He : 144.97\, kbar$, $H_2 : 69.16\, kbar$, $N_2 : 76.48 \,kbar$, $O_2 : 34.86\, kbar$

The vapour pressure of a solution (P) and the vapour pressure of the solvent (P$^\circ$) are related to each other as ($x_1$ is the mole fraction of solvent)