List of top Chemistry Questions

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:
The oil of wintergreen is:
The lightest as is:
The oxidation state of $M^{3+}$ after removing three electrons is:
The oxygen obtained from $72\,kg$ of water is:
The process of zinc-plating on iron sheet is known as:
The correct one for $ d- $ orbital is:
The hybridisation present in $ IF_{3}$ is:
Nessler's reagent is:
The number of isomers which can be represented by formula $ C_{2}FClBrI $ , is:
The acid, not suitable for the preparation of hydrogen by the action of metals, is:
Which of the following gas has highest heat of combustion?
The geometry of $H_2S$ and its dipole moment are
The ground state energy of hydrogen atom is $-13.6\, eV$. What is the potential energy of the electron in this state?
If 13.6eV energy is required to ionize the hydrogen atom, then the energy required to remove an electron from $ n=2 $ is:
The elevation in boiling point, when 13.44 g of freshly prepared CuCI$_2$ are added to one kilogram of water, is . [Some useful data, K$_b = 0.52 K kg mol^{-1}$, molecular weight of CuCl$_2$ =134.4 g]
The disperse phase in colloidal iron (III) hydroxide and colloidal gold is positively and negatively charged, respectively. Which of the following statements is not correct ?