List of top Chemistry Questions

Which of the following statement about enzyme is correct ?
When ethanal and propanal undergo aldol condensation with dilute NaOH, the pair of products obtained by cross condensation reaction is
Which of the following species is used in Friedel - Craft reaction?
The number of primary isomeric alcohols of the molecular formula \(\text{C}_4\text{H}_{10}\text{O}\) is
In Gatterman reaction, which of the following catalyst is used?
Buna - S is an example of ,
What type of saccharide the maltose is?
What type of mechanism is followed by dehydration of alcohol to form ether?
An organic compound with the molecular formula \(\text{C}_6\text{H}_6\text{O}\) dissolves in NaOH, gives a characteristic colour with neutral \(\text{FeCl}_3\) and on treatment with bromine water gives a tri bromo derivative. Which is that compound among the following?
Identify the major product of dehydrohalogenation of \(\text{CH}_3\text{-CH}_2\text{-CH(Br)-CH}_3\).
Which of the following compounds is formed when chloroform is exposed to air and light?
Which of the following sets of ligands does NOT contain ambident ligand in it?
What type of color is observed when a compound absorbs red coloured light?
Which of the following lanthanoids is radioactive?
Which of the following nanomaterial has all the three dimensions \(< 100\) nm?
Which transition series includes elements Co and Mo respectively?
Which of the following is an ambident ligand ?
Identify the gas adsorbed by solid to the largest extent at their respective critical temperature.
Match the Xenon compounds in Column-1 with its structure in Column-II.
Column – IColumn – II
(a) \(\text{XeF}_4\)(i) pyramidal
(b) \(\text{XeF}_6\)(ii) square planar
(c) \(\text{XeOF}_4\)(iii) distorted octahedral
(d) \(\text{XeO}_3\)(iv) square pyramidal
The standard potential of \(\text{Cu}^{+2}/\text{Cu}\) is \(0.34\) V at \(298\) K. Calculate its potential at the same temperature when the \(\text{Cu}^{+2}\) ion concentration is \(0.1\) M.
Match List I with List II.
List I (Conversion)List II (Number of Faraday required)
A. \(1\) mole of \(\text{H}_2\text{O}\) to \(\text{O}_2\)I. \(3F\)
B. \(1\) mol of \(\text{MnO}_4^-\) to \(\text{Mn}^{2+}\)II. \(2F\)
C. \(1.5\) mol of Ca from molten \(\text{CaCl}_2\)III. \(1F\)
D. \(1\) mol of FeO to \(\text{Fe}_2\text{O}_3\)IV. \(5F\)
Choose the correct answer from the options given below :
Which from following options is true when an electrolyte solution is diluted ?
What is the order of the following reaction ?
\(2\text{H}_2\text{O}_2(l)\rightarrow 2\text{H}_2\text{O}(l)+\text{O}_2(g)\), if rate = \(k[\text{H}_2\text{O}_2]\)
The half life of first order reaction is \(850\) s. The initial concentration of the reactant is \(0.06\) mol \(\text{dm}^{-3}\). What concentration would remain after \(1200\) s ?
Half life period of a first order reaction is \(1386\) seconds. The rate constant of the reaction is