List of top Chemistry Questions

Benzene when treated with Br\(_2\) in the presence of FeBr\(_3\), gives 1,4-dibromobenzene and 1,2-dibromobenzene. Which type of reaction is this?
The most basic oxide
\( E^\circ_{\text{Cell}} = 1.1 \, \text{V}. \, \text{Find} \, E_{\text{Cell}} \, \text{for the reaction:} \, \text{Zn} + \text{Cu}^{2+} \, (0.1M) \rightleftharpoons \text{Zn}^{2+} \, (0.001M) + \text{Cu} \)
Number of valence electrons in Germanium?
What is the IUPAC name of phenyl isopentylether?
What is the order of the SN2 reaction for the compounds: \[ \text{2-methyl-2-bromo-butene}, \quad \text{2-bromo-butene}, \quad \text{1-bromo-butane} \]
What technique is used to separate chloroform from aniline?
Number of sigma and pi bonds in methyl but-1-ene is:
Fehling's solution is a mixture of:
The reaction shown is: \[ \text{Phenol} + \text{CHCl}_3 + \text{NaOH} \rightarrow \text{Salicylaldehyde} \] What is the name of the above reaction?
Arrange in the order of conductivity: \[ \text{Na, Ag, Fe, Cu} \]
Which among the following has the highest molar elevation constant?
The disease is caused by a deficiency of riboflavin.
Find the pH of the solution if \( [\text{H}^+] = 2 \times 10^{-4} \, \text{mol/L} \).
Which of the following is the set of neutral oxides? (a) \( \text{Al}_2\text{O}_3, \text{Cl}_2\text{O}_7 \), b) \( \text{N}_2\text{O}, \text{CO} \)
What is the formula of lanthanoids with sulfur?
In which of the following cases does manganese have a +7 oxidation state?
Common oxidation state of Cr?
When toluene is treated with chromium oxide and acetic anhydride, followed by hydrolysis, what is the product formed?
Which among the following acts as a Lewis acid? \[ A) \text{AlCl}_3, \quad B) \text{NH}_3, \quad C) \text{OH}^-, \quad D) \text{H}_2\text{O} \]
Which of the following has the highest \( K_b \) value?
Among the following, which one is incorrect? \[ \text{BrF}_5 \rightarrow \text{Trigonal bipyramidal}, \quad \text{SF}_4 \rightarrow \text{See saw}, \quad \text{NH}_3 \rightarrow \text{Pyramidal}, \quad \text{XeF}_4 \rightarrow \text{Square planar} \]
Layer's test is used for what purpose?
Find the rate constant at 310K if the initial concentration is 0.72 mol L$^{-1}$ and the final concentration is 1.44 mol L$^{-1}$ at 10 minutes.
Arrange in the order of dipole moment: \[ \text{NH}_3, \, \text{NF}_3, \, \text{H}_2\text{S}, \, \text{CHCl}_2 \]