List of top Chemistry Questions

For the reversible reaction $A_{(s)}+B_{(g)}\leftrightharpoons C_{(g)} +D_{(g)} \Delta G^\circ=-350kJ $ which one of the following statements is true?
The oxidation state of chromium in the final product formed by the reaction between $KI$ and acidified potassium dichromate solution is
The most stable $+2$ oxidation state is exhibited by
The system that forms maximum boiling azeotrope is
Which of the following compounds has least boiling point?
Which one of the following is a non-benzenoid aromatic compound?
The titanium (atomic number 22) compound that does not exist is
If the energies of the two photons are in the ratio of $3 : 2$, their wavelengths will be in the ratio of
The IUPAC name of the complex $[Co (NH_3)_4 Cl_2 ]Cl$ is
The spin only magnetic moment of $Fe^{2+}$ ion $(in\, B.M.)$ is approximately
The correct order of acid strength of the following compounds: 
(A) Phenol\(\quad\) 
(B) p-Cresol \(\quad\)
(C) m-Nitrophenol \(\quad\)
(D) p-Nitrophenol is :
Hybridization of $C_2$ and $C_3$ of $H_3C - CH = C = CH - CH_3$ are
Among the following compounds, the most acidic is
Find the number of stereoisomers of 1,2-dihydroxy cyclopentane.
: Both Grignard reagent and dialkyl cadmium react with acid chlorides to form tert-alcohols. : Grignard reagents are as reactive as dialkyl cadmium.
In the given structure of a compound, the correct various bond moments direction involving are shown as
: A catalyst increases the rate of a reaction. : In presence of a catalyst, the activation energy of the reaction decreases.
The bond order of $ C_2$ molecule is
Which one of the following statement is not true ?
The change in the optical rotation of freshly prepared solution of glucose is known as
Extraction of metal from the ore cassiterite involves
Which of the following is not affected by the temperature?
The frequency of light emitted for the transition n = 4 to n = 2 of $He^+$ isequalto the transition in H atom corresponding to which of the following?
A solution is $0.1 M$ with respect to $Ag ^{+}, Ca ^{2+}, Mg ^{2+}$ and $Al ^{3+}$, which will precipitate at lowest concentration of $\left[ PO _{4}^{3-}\right]$ when solution of $Na _{3} PO _{4}$ is added?
The non aromatic compound among the following is :