List of top Chemistry Questions

A nuclear reaction of \( ^{235}_{92}U \) with a neutron produces \( ^{90}_{37}Kr \) and two neutrons. Other element produced in this reaction is
The purple colour of KMnO₄ is due to the transition
C₆H₅CHO + NH₃ \(\xrightarrow{H_2, Ni}\) ?
The correct sequence of base strengths in aqueous solution is
When aqueous solution of benzene diazonium chloride is boiled, the product formed is
The carbamylation reaction is given by aliphatic
In TeCl₆, the central atom tellurium involves
Transesterification is the process of
(CH₃CO)₂O + RMgX \(\xrightarrow{H_2O}\) ?
HOOC–(CH₂)₄–COOH + 2C₂H₅OH \(\xrightarrow{H_2SO_4}\) C₂H₅COOC–CH₂–COOC₂H₅
The purpose of using toluene here is
Identify, which of the below does not possess any element of symmetry?
The catalyst used in Rosenmund reaction is
The weakest acid amongst the following is
In the below reaction $x$ is.
The relative humidity on a day when partial pressure of water vapour is $0.012 \times 10^{5} Pa$ at $12^{\circ} C$ is (Take vapour pressure of water at this temperature as $0.016 \times 10^{5}Pa)$
Alizarin belongs to the class of
Given: $ { 2C(s) + 2O_2 (g) -> 2CO_2 (g) ; \Delta H = -787 kJ} $
The weakest acid amongst the following is
The correct sequence of base strengths in aqueous solution is
${C_6H_5CHO ->[NH_3][H_2,Ni]?}$
${HOOC - (CH_2)_4 - COOH + 2C_2H_5OH ->[H_2SO_4][Toluene] C_2H_5OOC -CH_2 - COOC H_5}$ The purpose of using toluene here is
When aqueous solution of benzene diazoniumchloride is boiled, the product formed is
The purple colour of ${KMnO4}$ is due to the transition
$AgCl$ dissolves in a solution of ${NH_3}$ but not in water because
Condition for spontaneity in an isothermal process is