List of top Chemistry Questions

The structure of $XeF_6$ is experimentally determined to be distorted octahedron. Its structure according to VSEPR theory is

$2.76\, g$ of silver carbonate on being strongly heated yields a residue weighing

Which of the following hormones is produced under the condition of stress which stimulates glycogenolysis in the liver of human beings?

The reaction of aqueous $KMnO_4$ with $ H_2O_2 $ in acidic conditions gives

The correct order of bond dissociation energy among $N_2, O_2, O_2^-$ is shown in which of the following arrangements ?

The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is

The octahedral complex of a metal ion $M^{3+} $ with four monodentate ligands $L_1,L_2,L_3 \, and \, L_4 $ absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of the four ligands is

Which of the following series correctly represents relations between the elements from X to Y?
\(X\to Y\)

Which one of the following has largest ionic radius?

The amount of oxygen in $3.6$ moles of water is :

Aminoglycosides are usually used as :

The conjugate base of hydrazoic acid is :

The appearance of colour in solid alkali metal halides is generally due to :

The ratio mass of oxygen and nitrogen of a particular gaseous mixture is $1 : 4$ The ratio of number of their molecule is

$CsCl$ crystallises in body centred cubic lattice. If 'a' is its edge length, then which of the following expressions is correct?

Artificial sweetener which is stable under cold conditions only is

For hydrogen - oxygen fuel cell at one $atm$ and $298\, K$ $H_2(g)+\frac {1}{2} O_2(g) \to H_2O_{(l)} ; \Delta G^\circ=-240\, kJ$ $E^\circ$ for the cell is approximately, (Given $F \,= \,96,500 \,C$)

For an ideal binary liquid mixture

Calculate the energy in joule corresponding to light of wavelength 45 nm (Planck's constant, $h=6.63\times10^{-34}$ Js; speed of light, $c=3\times 10^{8}$.

In Freundlich Adsorption isotherm, the value of $1/n$ is :

What kinds of bonds are present in ethene molecule?

Which acid is present in vinegar?

Lithium shows diagonal relationship with

Why $d$-block element form complexes?

Addition of oxygen to an element or a compound is termed as