List of top Chemistry Questions

Which of the following is correct statement?
An atom forms face centered cubic crystal with density d=8.92 g/mL and edge length a=3.6×10-8 cm. The molecular mass of atom in amu is
Product P is
Product P is :
In a crystalline sold, having formula \(XY_2O_4\), oxide ions are arranged in cubic close packed lattice while cations \(X\) are present is tetrahedral voids and cations \(Y\) are present in octahedral voids. The percentage of tetrahedral voids occupied by \(X\) is
If \(Na^+\) ion is larger than \(Mg^{2+}\) ions and \(S^{2-}\) ion is larger than \(Cl^-\) ion, which of the following will be stable salt in water ?
The correct order of ease of adsorption of the hydrated alkali metal ions on an ion exchange resin is
The correct formula for plaster of Paris is
The value of Kc for the reaction, \(2A⇋B+C\) is \(2×10^{-3}\). At a given time,the composition of reaction mixture is \([A]=[B]=[C]=3×10^{-4}\ M\). In which direction, the reaction will proceed?
Which of the following chemicals are used to manufacture methyl isocyanate that caused Bhopal tragedy?
(i) Methylamine
(ii) Phosgene
(iii) Phosphine
(iv) Dimethylamine
Among the following, the non-aromatic heterocyclic compound is
Neopentyl chloride reacts with benzene in presence of a Lewis acid \((AlCI_3)\) to form
For the following reaction,
\(2NH_3(g)+CO_2(g)⇋NH_2CONH_2(aq)+H_2O(l)\)
△G°=-13.6 kJmol-1 at 298 K. Then log Keq for this eq equilibrium is
Xenon hexafluoride reacts with silica to form a compound \(X\). The oxidation state of xenon in \(X\) is
In the reaction,
The major product formed
The major product formed is:
Lead is extracted from galena (PbS), either by following ways.
Which one of the following represents the correct structure of cellulose?
In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \(Cu_2O\) with
What is the formula of Marshalls acid?
Final product will be
Final product will be:
Oxidation number of \(Cr\) in \([Cr(NH_3)_4Cl_2]^+\)
Which one of the following species is paramagnetic in nature?
Which is suitable reagent for wurtz reaction:
Which of the following pair behaves strong and weak base hydride \(NH_3, PH_3, AsH_3, SbH_3, BiH_3\)
Which of the following becomes paramagnetic on heating at 850 K?
Find relation b/w
Find relation b/w