List of top Chemistry Questions

In the first transition series, the element which shows highest oxidation state has the electronic configuration
In the following chemical reaction: $ {Ag_2O + H_2O + 2e^{-} -> 2Ag + 2OH^{-}} $
In the following decomposition reaction $ {2H_2O ->[\Delta] 2 H_2 + O_2}$
In the following compounds The order of acidity is
In the extraction of aluminium from bauxite, cryolite is used to
In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with:
In the electrolysis of dilute $H_2SO_4$ using platinum electrode
In the disproportionation reaction $ {3 \, HClO_3 -> HClO_4 + Cl_2 + 2 O_2 + H_2O}$ the equivalent mass of the oxidising agent is (molar mass of $ {HClO_3 = 84.45}$)
In the cubic close packing, the unit cell has
In the coordination compound $K_4[Ni(CN)_4]$, the oxidation state of nickel is
In the compounds $ {KMnO_4}$ and $ {K2Cr2O7}$ the highest oxidation state is of the element :
In the complex $[Pt(py)_4] [PtCl_4]$, the oxidation numbers of Pt atom in former and later part of the compound are respectively
In the blast furnace (extraction of iron) the highest temperature is in
In test for primary amines, the amine is treated with $ {CHCl_3}$ and KOH and a bad smelling compound is formed. If the primary amine used is ethylamine, identify the bad smelling compound formed?
In spite of being an odd-electron molecule $ClO_2$ does not dimerize because
In $SiO_{4}^{4-}$ , the tetrahedral molecule, two oxygen atoms are shared in
In solid state $PCl_5$ is a _______.
In Solvay ammonia process, sodium bicarbonate is precipitated due to
In $S_{N^1}$ reaction, . the recimisation takes place due to
In pyrophosphoric acid, $H_4P_2O_7$, number of $?$- and $d?-p?$ bonds respectively are
In Rosenmund's reaction
In potash alum, potassium and aluminium are present as
In oxidation of oxalic acid by KMn$O_{4}$, the colour of KMn$O_{4}$ disappears slowly at the start of reaction but disappears very fast afterwards. This is an example of
In order to obtain acetaldehyde from calcium acetate, it should be heated with :
In order to prepare acetone from acetyl chloride which of the following reagents can be used ?