List of top Chemistry Questions on Some basic concepts of chemistry asked in AIIMS

Calculate Molarity of a 63% w/w $HNO_3$ solution if density is 5.4 g/mL :

One mole of NaCl contains 6.023 ??10 formula units of sodium chloride. 58.5 g of NaCl also contains 6.023 ??10 formula units of NaCl.

Equivalent weight of NH in the reaction, N $?$ NH is 17/3 while that of N is 28/6. Equivalent weight $\quad\quad \quad \quad \quad= \frac{Molecular\, weight}{Number\, of\, e^{-} lost or gained per mole}$

S.I. unit of atomic mass and molecular mass is kilograms. Atomic mass is equal to the mass of $6.023 \times 10^{24}$ atoms.

What is the molarity of $H _{2} SO _{4}$ solution that has a density of $1.84\, g / cc$ at $35^{\circ} C$ and contains $98 \%$ by weight?

To a $25 \,ml \,H _{2} O _{2}$ solution, excess of acidified solution of KI was added. The iodine liberated required $20\, ml$ of $0.3 \,N \,Na _{2} S _{2} O _{3}$ solution.

During electrolysis of water the volume of $O _{2}$ liberated is $2.24\, dm ^{3}$. The volume of hydrogen liberated, under same conditions will be

Atoms can neither be created nor destroyed. Under similar condition of temperature and pressure, equal volume of gases does not contain equal number of atoms.

$12\, g$ of an alkaline earth metal gives $14.8\, gm$ of its nitride. Atomic weight of the metal is

The empirical formula of a compound is $CH_2O$. Its molecular weight is $180$. The molecular formula of the compound is

A compound with empirical formula $CH_2O$ has a vapour density of $30$. Its molecular formula is

The equivalent weight of an acid is equal to

One gram mole of a gas at NTP occupies $22.4\, L$. This fact was derived from

The percentage of oxygen in $NaOH$ is

The number of moles of water present in $180\, gm$ of water is

Avogadro?? number of oxygen atom weighs

A bivalent metal has the equivalent weight of $12$. The molecular weight of its oxide will be

The weight of a metal of equivalent weight $12$, which will give $0.475\, g$ of its chloride, is