List of top Chemistry Questions

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

The correct order of ease of adsorption of the hydrated alkali metal ions on an ion exchange resin is

Among the following, the non-aromatic heterocyclic compound is

Which one of the following represents the correct structure of cellulose?

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 K_eq 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 is:

Lead is extracted from galena (PbS), either by following ways.

Neopentyl chloride reacts with benzene in presence of a Lewis acid \((AlCI_3)\) to form

Final product will be:

Oxidation number of \(Cr\) in \([Cr(NH_3)_4Cl_2]^+\)

In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \(Cu_2O\) with

Which one of the following species is paramagnetic in nature?

What is the formula of Marshalls acid?

Find relation b/w

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 out products of hydrolysis of NaCl solution on cathode and anode

When metal ? $M$ ? is treated with $NaOH$, a white gelatinous precipitate ?$X$? is obtained, which is soluble in excess of $NaOH$. Compound ?$X$? when heated strongly gives an oxide which is used in chromatography as an adsorbent. The metal ?$M$? is :

In \(XeO_3F_2\), the number of bond pair(s), \(\pi\)-bond(s) and lone pair(s) on \(Xe\) atom respectively are :

Regarding cross-linked or network polymers, which of the following statements is incorrect ?

Which of the following best describes the diagram below of a molecular orbital ?