List of top Chemistry Questions

Oxidative rancidity of oils can be prevented by adding
The dissociation constant of a weak base is $ {1 \times 10^{-5}}$ at 25?C. The pH of its 0.1 M solution at the same temperature.will be .
ln cuprarnmonium sulphate, copper is
Isopropyl chloride and isobutyl chloride reacts with sodium in ether to give?
The conjugate acid of $ {HCO_3^-}$ is
According to Lewis concept, an acid is a/an
Aldol condensation is given by
The decarboxylating agent is
Methoxymethane and ethanol exhibit
The compound which gives hydrocarbon on distillation with zinc dust is
As we move from left to right in the 3d-series elements
Following is the substitution reaction in which \(-CN\) replaces \(-Cl\)
\(R - CI + KCN \overset{\Delta}{\rightarrow} R - CN + KCI\)
To obtain propane nitrile, \(R-Cl\) should be:
Which of the two ions from the list given below, have the geometry that is explained by the same hybridisation of orbitals $NO^- _ 2 ,NO_3^- , NH_2^- , NH_4^+,SCN ^- ?$
What is the value of electron gain enthalpy of $Na^+$ if $IE_1$ of $Na = 5.1 \, eV$?
Clemmensen reduction of a ketone is carried out in the presence of which of the following?
A gaseous mixture was prepared by taking equal moles of $CO$ and $N_2.$ If the total pressure of the mixture was found $1$ atmosphere, the partial pressure of the nitrogen $(N_2)$ in the mixture is
A solution contains ${Fe^{2+}, Fe^{3+}}$ and $I^-$ ions. This solution was treated with iodine at ${ 35^{\circ} C. E^{\circ}}$ for ${Fe^{3+} /Fe^{2+}}$ is $+0.77 \, V$ and $E^{\circ}$ for $I_2/2I^- = 0.536 \, V.$ The favourable redox reaction is-
Two different electrolytic cells filled with molten $Cu(NO_3)_2$ and molten $Al(N0_3)_3$ respectively are connected in series. When electricity is passed 2. 7 g Al is deposited on electrode. Calculate the weight of Cu deposited on cathode. $[Cu = 63 .5; Al= 27 .0 g mol^{-1} ]$
Enthalpy change for the reaction, $4 H _{( g )} \rightarrow 2 H _{2( g )}$ is $-869.6\, kJ$ The dissociation energy of $H - H$ bond is
The correct order of increasing bond length of $ C - H, C - O, C - C$ and $ C = C $ is
The pairs of species of oxygen and their magnetic behaviours are noted below. Which of the following presents the correct description ?
Ammonia gas does not evolve from the complex $FeCl_3$ $\cdot$ $4NH_3$ but it gives white precipitate with aqueous solution of $AgNO_3.$ Coordination number of central metal ion in the above complex is six. Give IUPAC name of the complex.
How glucose is related with fructose?
Give IUPAC name of the product, when acetamide is heated with anhydrous phosphorus pentoxide
How can you say that glucose is cyclic compound?