List of top Chemistry Questions

Which of the following series correctly represents relations between the elements from X to Y?
\(X\to Y\)
In a face centered cubic lattice atoms $A$ are at the corner points and atoms $B$ at the face centered points. If atom $B$ is missing from one of the face centered points, the formula of the ionic compound is :
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
Among the following molecule which has the zero dipole moment?
What are lanthanides and actinides?
The entropy of vaporization of a liquid is $58 \, JK^{-1} \,mol^{-1}$. If $100\, g$ of its vapour condenses at its boiling point of $123^{\circ}C$, the value of entropy change for the process is (Molar mass of the liquid = $58 \,g \,mol^{-1})$
Green chemistry deals with
According to MO theory,
The sugar moiety present in $RNA$ molecule is