List of top Chemistry Questions

Which one of the following noble gases, is least polarisable?

Which is the correct increasing order of ionization energies?

What is the structure of $ {{H}_{2}}O $ ?

van der Waals gas equation for n mole gas is:

The most stable carbonium ion among these is:

The chemical formula of lunar caustic is:

The catalyst used in Ostwalds method nitric acid preparation, is:

Solid $ PC{{l}_{5}} $ exists as:

Reaction of ethyne with HCN, in the presence of $ Ba{{(CN)}_{2}} $ is:

How many isomeric forms of $ {{C}_{7}}{{H}_{9}}N $ contain a benzene ring?

$ CH\equiv \equiv CH\xrightarrow[{{H}_{2}}S{{O}_{4}}]{{{H}_{2}}O/H{{g}^{2+}}}X\xrightarrow{LiAl{{H}_{4}}}Y\xrightarrow{{{P}_{4}}/B{{r}_{2}}}Z, $ Here Z is:

Pi-bond (Ti-bond) is formed:

What is packing fraction of $ {}_{26}F{{e}^{56}} $ ? (At. mass = 55.92066)

Green vitriol is:

An element is in $ {{M}^{3+}} $ form. Its electronic configuration is $ [Ar]\,4{{s}^{1}} $ . What is the atomic number of element?

Milk is a colloid in which:

Which of the following has smallest size?

The number of neutrons in the element ${ }_{4} Be ^{9}$ is :

In which of the following, bond angle is maximum?

Zn convert it's melted state to its solid state, it has HCP structure, then find out nearest no. of nearest atom

In BCC, the distance between two nearest atoms will be 

Which of following organometallic compound is \(\sigma\) and \(\pi\) bonded