List of top Chemistry Questions

In the given reaction : $ {CH3CH2OH ->[KMnO_4][H^+] A }$$ { ->[B][H_2SO_4 /heat] CH3COOCH2CH3}$ A and B are

In the Frasch process, molten sulphur rises up from the

In the given graph, a periodic property $(R)$ is plotted against atomic numbers $(Z)$ of the elements. Which property is shown in the graph and how it is correlated with reactivity of the elements?

In the following sets of reactants which two sets best exhibit the amphoteric characters of $ {Al_2O_3. xH_2O}$ ? Set 1: $ {Al2O3.xH2O (s)}$ and $ {OH- (aq)}$ Set 2: $ {Al2O3.xH2O (s)}$ and $ {H2O (l)}$ Set 3: $ {Al2O3.xH2O (s)}$ and $ {H+ (aq)}$ Set 4: $ {Al2O3.xH2O (s)}$ and $ {NH3 (aq)}$

In the following reaction : $ {Acetamide ->[P_2O_5][\Delta] Y ->[H_2O/HCl][\Delta] Z ->[NaOH][CaO] CH_4 }$, identify Z :

In the following reaction, $C_6H_5COOCH_3\xrightarrow[H_2O/H^+]{LiAlH_4}A+B$ A and Bare respectively

In the following compounds The order of acidity is

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 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 complex $[Pt(py)_4] [PtCl_4]$, the oxidation numbers of Pt atom in former and later part of the compound are respectively

In the compounds $ {KMnO_4}$ and $ {K2Cr2O7}$ the highest oxidation state is of the element :

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 Solvay ammonia process, sodium bicarbonate is precipitated due to

In $SiO_{4}^{4-}$ , the tetrahedral molecule, two oxygen atoms are shared in

In solid state $PCl_5$ is a _______.

In $S_{N^1}$ reaction, . the recimisation takes place due to