List of top Chemistry Questions

The number of pi-bonds present in benzoic acid molecule are
If a metal crystallises in bcc structure with edge length of unit cell $4.29 \times 10^{-8}\, cm$ the radius of metal atom is
The temperature of $32^{\circ}C$ is equivalent to
The combining ratios of hydrogen and oxygen in water and hydrogen peroxide are $1 : 8$ and $1 : 16$ . Which law is illustrated in this example ?
"The mass and energy both are conserved in an isolated system", is the statement of
Which among the following is correct for electrolysis of brine solution ?
$9$ gram anhydrous oxalic acid (mol. wt. = $90$) was dissolved in $9.9$ moles of water. If vapour pressure of pure water is $p_{1}^\circ 1$ the vapour pressure of solution is
The elevation in boiling point of $0.25$ molal aqueous solution of a substance is $(K_b = 0.52\, K\, kg\, mol^{-1})$
Which of the following oxides can act both as an oxidising agent as well as reducing agent ?
The rule which describes the electron distribution in degenerate orbitals of an atom is
The possible I values for a given n value are
Which of the following set of quantum numbers is not correct?
The correct order of energies for the electromagnetic spectrum is
The Quantum mechanical model of atom was proposed by
Which of the following is an example of acid?
Electrolysis of aqueous NaCl solution produces
The chemical name of plaster of Paris is
The colour of methyl orange indicator in HCl is
Which of the following is an example for neutralization reaction?
The tarnishing of silver spoon in presence of moisture is due to formation of
One mole of \(H_2\) gas contains how many molecules? 
Lead nitrate on reaction with potassium iodide gives yellow precipitate. The yellow color is due to
\(Pb(NO_3)_2 + 2KI \rightarrow PbI_2 + 2KNO_3\)
The organic compound with R---- COO-----R' functional group is prepared from
For extraction of highly reactive metal compounds from their ores, some impurities are added during the electrolysis process. The role of impurity is
The IUPAC name of IUPAC name