List of top Chemistry Questions

The reaction of ${HCOOH}$ with conc. ${H_2SO_4}$ gives
The conversion of $A \rightarrow B$ follows second order kinetics. If $[A]$ is increased 3 times then rate of formation of $[B]$ is
Sulphur in + 3 oxidation state is present in
$Propan-1-ol$ can be prepared from propene by
Ethylene-1, 2-diamine is an example of
During extraction of aluminium from bauxite,
Choose the correct alternative same as; Radium, Polonium and Uranium
Carbonyl (CO) stands first in spectrochemical series as a
Bithional is an example of
Para hydrogen is
Which of the following sets of quantum numbers represents the highest energy of an atom?
A monoatomic anion of unit charge contains 45 neutrons and 36 electrons. Identify the ion.
For $d$-electron, the orbital angular momentum is
The decreasing order of basic character of $K_2O,\, BaO, \, CaO$ and $MgO$ is
The conversion of nitriles to aldehydes with stannous chloride in presence of $HCl$ is known as
The carbocation formed in $S_{N}1$ reaction of alkyl halide in the slow step is
Lucas reagent is equimolar solution of
For a reaction, $NO (g)+ O _{2}(g) \rightarrow 2 NO _{2}(g) ;$ Rate $=k l[N O]^{2}\left[O_{2}\right]$. If the volume of the reaction vessel is doubled, the rate of reaction
Two moles of an ideal gas are allowed to expand reversibly and isothermally at $300\, K$ from a pressure of $1\, atm$ to a pressure of $0.1\, atm$. The change in Gibbs free energy is
1.0 g of magnesium is burnt with 0.56 g O2 in a closed vessel. Which reactant is left in excess and how much? (At. wt. Mg = 24 ; O = 16)
The total number of octahedral void(s) per atom present in a cubic close packec structure is :-
The most suitable reagent for the conversion of $RCH_2OH \to RCHO$ is
In the Victor-Meyer's test, the colour given by $1^{\circ}$, $2^{\circ}$and $3^{\circ}$ alcohols are respectively :
For the compounds $CH_3Cl, \, CH_3Br,\,CH_3I$ and $CH_3F,$ the correct order of increasing $C$-halogen bond length is :
Tischenko reaction is a modification of :