List of top Chemistry Questions

An aqueous solution containing $3\, g$ of a solute of molar mass $111.6 \,g\, mol ^{-1}$ in a certain mass of water freezes at $-0.125^{\circ} C$. The mass of water in grams present in the solution is $\left(K_{f}=1.86\, Kkg \,mol ^{-1}\right)$
Which of the following compounds is most basic?
The $pK_a$ of a weak acid $HA$ and $pK_b$ of a weak base $BOH$ are $4.60$ and $4.80$ respectively. The $pH$ of $0.1\, M$ solution of the salt, $BA$, formed from the acid $HA$ and base $BOH$ is

Write chemical reaction for the preparation of phenol from chlorobenzene. 

The vapour pressure of a solvent at 293 K is 100 mm Hg. Then the vapour pressure of a solution containing 1 mole of a strong electrolyte $(AB_2)$ in 99 moles of the solvent at 293 K is (assume complete dissociation of solute)
The mass of 112 $cm^3$ of $CH_4$ gas at STP is
atomic mass unit is____.
Who has zero dipole moment?
RCHO is converted into RCH3 using zinc amalgam and concentrated HCl this reduction is called as
Which is the structure of glutaric acid?
What happens when CU metal is immersed in ferrous sulphate
Products when H2SO4 is reacted with sucrose
What gives CO and CO2 when they react with H2SO4
Disproportion reaction is ___
Density change in Schottky and Frenkel defect
What is glucose
What are isoelectronic species
photoelectric effect is observed?
The order of their electronegativities?
Which alkali give red colour on flame test
25 mL of 3 M HCl were added to 75 mL of 0.05 M HCl. The molarity of HCl in the resulting solution is approximately
Which of the following species is strongest Lewis base ?
Chlorine cannot displace
The right option for the number of tetrahedral and octahedral voids in the hexagonal primitive unit cells are :

The compound which shows metamerism is