List of top Chemistry Questions

If the ionisation energy of hydrogen atom is $13.6\,eV$, the energy required to excite it from ground state to the next higher state is approximately

If the general formula for aldehyde is written as ${C_n H_{2n+1}CHO}$, the value of n for isobutyraldehyde is

If spheres of radius $'r'$ are arranged in ccp fashion (ABCABC.....), the vertical distance between any two consecutive A layers is

If $NH_4OH$ is added to the $[PtCl_4]^{2-}$ ion, the complex formed represents

If half cell reaction $A + e^- \rightarrow A^-$ has a large negative reduction potential, it follows that

If $Cl_2$ gas is passed into aqueous solution of KI containing some $CCl_4$ and the mixture is shaken :

"If a system A is in thermal equilibrium with B and B is in thermal equilibrium with C, then A and C are in thermal equilibrium with each other. " This is a statement of

$IF_5$ has the following hybridisation

If 150 kJ of energy is needed for muscular work to walk a distance of one km, then how much of glucose one has to consume to walk a distance of provided only 30% energy is available for muscular work. The enthalpy of combustionof glucose is 3000 $kJ mol^{-1}$'

Identify Z in the sequence. $ {CH3CH2CH \,=\, CH2 ->[HBr/H_2O_2] Y }$$ { ->[C_2H_5ONa] Z}$

Identify $X$, $Y$ and $Z$ in the given reaction: $ {CH_2=CH2->[Br_2][CCl_4]X->[NaCN][2\,moles]Y->[LiAlH_4]Z}$

Identify the type of polymer. $ (i) ? $(ii) ?? ?

Identify the incorrect statement with respect to ozone

Identify the compound $'Y'$ in the following reaction.

Identify disproportionation reaction.

Hypo is used in photography because it is

Hydrolith when dissolved in water liberates hydrogen. The formula of hydrolith is

Hydrolysis of benzonitrile gives

Hydrogen fluoride is a liquid unlike other hydrogen halides because

Hydration enthalpy order of compound : $ {Li^{+} , Na^{+}, K^{+}, Rb^{+}}$ and $ {Cs^{+}}$

Hydro-metallurgical process of extraction of metals is based on

Hydration of acetylene to ethanal is catalysed by

Hybridisation involves

Hybridisation of central atom in NF$_3$ is

Hybrid state of central oxygen atom in ether is