List of top Chemistry Questions

Polarisation of electrons in acrolein may be written as

$\alpha$-D-glucose and $\beta$-D-glucose are

Equilibrium constant $K_p$ for following reaction : ${ MgCO_3 <=> MgO(S) + CO_2 (g)}$

For a any reversible reaction. If increases concentration of reactants. Then effect on equilibrium constant:

Correct relation b/w dissociation constant's of a di-basic acid:

The activation energy for a reaction is 9.0 kcal/mol. The increase in the rate constant when its temperature is increased from 298 K to 308 K is:

A compound contains atoms of three elements $A, B$ and $C$. If the oxidation number of $A$ is $+ 2, B$ is $+5$ and that of $C$ is $- 2$, the possible formula of the compound is

The chief component of cement is:

Cell reaction is spontaneous when

Dihedral angle in staggered form of ethane is :

A compound formed by elements $A$ and $B$ crystallises in the cubic structure, where $A$ atoms are present at the corners of a cube and $B$ atoms are present at the face centres. The formula of the compound is

$F_2C = CF_2$ is a monomer of

For the reaction ${H^+ + BrO_3 ^- + 3Br^- -> 5Br+2 + H_2O}$ which of the following relation correctly represents the consumption & formation of reactants and products :

A drug that is antipyretic as well as analgesic is

Flux is used to

How enzymes increases the rate of reactions?

$Cu^+(aq) $ is unstable in solution and undergoes simultaneous oxidation and reduction according to the reaction $2Cu^+(aq) \rightleftharpoons Cu^{2+}(aq)+Cu(s) $ Choose the correct $E^0 $ for above reaction if $E^0_{Cu^{2+}/Cu^+}=0.34 \, V \, and \, E^0_{Cu^{2+}/Cu^+}=0.15 V $

Assuming fully decomposed, the volume of $CO_2$ released at STP on heating 9.85 g of $BaCO_3$ (at. mass of Ba = 137) will be

Which reagent converts  \(propene\) to \(1-propanol\):

Which of the following statement is correct for the stability of ions of ethyl alcohol and phenol:

$d\pi - p \pi$ bond present in :

Among the following group which represents the collection of isoelectronic species?

A 300 gram radioactive sample has half life of 3 hour's. After 18 hour's remaining quantity will be: