List of top Chemistry Questions

What is the correct electronic configuration of the central atom in \(K_4[Fe(CN)_6]\) based on crystal field theory?
An alkene \("A"\) on reaction with \(O_3\) and \(Zn - H_2{0}\) given propanone and ethanol in equimolar ratio. Addition of \(HCI\) to alkene \("A"\) gives. \("B"\)as the major product. The structure of product \("B"\) is : 
The correct structure of tribromooctaoxide is:
Identify the incorrect statement related to PCI from the following:
The mixture that forma maximum boiling azeotrope is :
\(pH\) of a saturated solution of \(Ca(OH)_2\) is \(9\). The solubility product \((K_{sp})\) of \( Ca(OH)_2\) is: 
Which of the following series of transitions in the spectrum of hydrogen atom falls in visible region?
The compound that is most difficult to protonate is:
The most suitable reagent for the following conversion, is:
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Which of the following is an amphoteric hydroxide?
The value of x in the following chemical reaction is
\(C_3H_8 + xO_2 \rightarrow YCO_2 + zH_2O\)
Compounds with spin-only magnetic moment equivalent to five unpaired electrons are
Which of the following oxides can act both as an oxidising agent as well as reducing agent ?
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 temperature of $32^{\circ}C$ is equivalent to
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 mass and energy both are conserved in an isolated system", is the statement of
The number of pi-bonds present in benzoic acid molecule are
$9$ 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
Which among the following is correct for electrolysis of brine solution ?
The elevation in boiling point of $0.25$ molal aqueous solution of a substance is $(K_b = 0.52\, K\, kg\, mol^{-1})$
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