List of top Chemistry Questions

If X is a member of chalcogen family, the chemicalhighest stability of $X^{2-}$ is exhibited by

If x g of a metal forms y g of metal chloride, equivalent weight of metal is

If we plot volume of a certain mass of a gas against temperature at constant pressure, we get a straight line intersecting on the negative side at $ -273^{\circ}C$ which explains about absolute zero. This graph is known as

If volume occupied by $CO_2$ molecules is negligible, then what will be the pressure $\left(\frac{p}{5.277}\right)$ exerted by one mole of $CO_{2}$ gas at $300\, K$? $\left(a = 3.592 atm L^{2} mol^{2}\right)$

If travelling at same speeds, which of the following matter waves have the shortest wavelength?

If the velocity of an electron in Bohr?? first orbit is $2.19 \times 10^6\, m\, s^{-1}$, what will be the de Broglie wavelength associated with it?

If the standard electrode potential of $Cu^{2+}/ Cu$ electrode is 0.34 V, what is the electrode potential of 0.01 M concentration of $Cu^{2+}$?(T = 298 K)

If the position of an electron is known to be within $10^{-12}$ m, then uncertainty in its momentum is

If the ionisation energy of hydrogen atom is $13.6\,eV$, the energy required to excite it from ground state to the next higher state is approximately

If the general formula for aldehyde is written as ${C_n H_{2n+1}CHO}$, the value of n for isobutyraldehyde is

If spheres of radius $'r'$ are arranged in ccp fashion (ABCABC.....), the vertical distance between any two consecutive A layers is

If $NH_4OH$ is added to the $[PtCl_4]^{2-}$ ion, the complex formed represents

If half cell reaction $A + e^- \rightarrow A^-$ has a large negative reduction potential, it follows that

If $Cl_2$ gas is passed into aqueous solution of KI containing some $CCl_4$ and the mixture is shaken :

"If a system A is in thermal equilibrium with B and B is in thermal equilibrium with C, then A and C are in thermal equilibrium with each other. " This is a statement of

If 500 mL of a gas A at 1000 torr and 1000 mL of gas B at 800 torr are placed in a 2 L container,the final pressure will be

$IF_5$ has the following hybridisation

If 150 kJ of energy is needed for muscular work to walk a distance of one km, then how much of glucose one has to consume to walk a distance of provided only 30% energy is available for muscular work. The enthalpy of combustionof glucose is 3000 $kJ mol^{-1}$'

Identify Z in the sequence. $ {CH3CH2CH \,=\, CH2 ->[HBr/H_2O_2] Y }$$ { ->[C_2H_5ONa] Z}$

Identify $X$, $Y$ and $Z$ in the given reaction: $ {CH_2=CH2->[Br_2][CCl_4]X->[NaCN][2\,moles]Y->[LiAlH_4]Z}$

Identify the type of polymer. $ (i) ? $(ii) ?? ?

Identify the incorrect statement with respect to ozone

Identify the compound $'Y'$ in the following reaction.

Identify disproportionation reaction.

Hypo is used in photography because it is