List of top Chemistry Questions

Number of unpaired electrons in $Mn^{4+}$ is :
Number of isomers possible for $ {{C}_{4}}{{H}_{8}}O $ is:
Which of the following is a carbonate ore?
Schottky defect generally appears in:
Which of the following is electron deficient molecule ?
Which of the following is fully fluorinated polymer ?
Which of the following would have a permanent dipole moment ?
Which one of the following biomolecules is insoluble in water?
Which of the following factors may be regarded as the main cause of lanthanide contraction ?
What is the name of the element with atomic number 105?
$ KO_{2} $ is used in oxygen cylinders in space and submarine because it:
On heating quick lime with coke in an electric furnace we get:
which of the following has $p \pi-d \pi$ bonding?
Molecule having least dipole moment is:
Among the following the weakest base is:
The Van't Hoff factor $'i'$ accounts for
The value of the "spin only" magnetic moment for one of the following configurations is 2.84 BM. The correct one is :
The surface tension of which of the following liquids is maximum?
The structure of diborane $(B_2H_6)$ contains :
The oxidation state of Cr in $[Cr(NH_3)_4Cl_2]^+$ is :
The order of reactivity of the following alcohols towards conc. $ HCl $ is:
The molar freezing point constant for water is $ 1.86{}^\circ C/mole $ . If $342\, g$ of cane sugar $ (C_{12}H_{22}O_{11})$ is dissolved in $1000 \,g$ of water, the solution will freeze at:
The major product obtained on treatment of $CH_3 CH_2 CH(F)CH_3$ with $CH_3 O^- /CH_3 OH$ is
The magnetic moment $(\mu ) $ of a revolving electron around the nucleus varies with principal quantum number $n$ as
The lanthanide contraction is responsible for the fact that: