List of top Chemistry Questions

Find the \( \Delta G \) during the reaction: \[ \text{H}_2\text{O}(l) \rightleftharpoons \text{H}_2\text{O}(g) \quad \Delta S = +1 \, \text{kJ/mol} \, \text{at} \, 100^\circ C \]
Name of the reaction in which benzoyl chloride is converted to benzaldehyde is
Which of the following is an ambidentate ligand? a) \( \text{C}_2 \text{O}_4^{2-} \) b) \( \text{CN}^- \) c) \( \text{NH}_3 \)
Maximum magnetic moment shown by:
10 g of (90 percent pure) \( \text{CaCO}_3 \), treated with excess of HCl, gives what mass of \( \text{CO}_2 \)?
\( E^\circ_{\text{Cell}} = 1.1 \, \text{V}. \, \text{Find} \, E_{\text{Cell}} \, \text{for the reaction:} \, \text{Zn} + \text{Cu}^{2+} \, (0.1M) \rightleftharpoons \text{Zn}^{2+} \, (0.001M) + \text{Cu} \)
Friedel Craft's reaction is an example of:
Number of valence electrons in Germanium?
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?
Alkali metal with highest first ionization enthalpy is:
Fehling's solution is a mixture of:
Which of the following is the set of neutral oxides? (a) \( \text{Al}_2\text{O}_3, \text{Cl}_2\text{O}_7 \), b) \( \text{N}_2\text{O}, \text{CO} \)
Which among the following has the highest molar elevation constant?
Arrange in the order of conductivity: \[ \text{Na, Ag, Fe, Cu} \]
When toluene is treated with chromium oxide and acetic anhydride, followed by hydrolysis, what is the product formed?
The disease is caused by a deficiency of riboflavin.
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?
What technique is used to separate chloroform from aniline?
What is the formula of lanthanoids with sulfur?
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.
Initial concentration of a reaction is \( 1.68 \times 10^{-2} \) and after 10 minutes concentration becomes \( 0.84 \times 10^{-2} \). Then the rate of concentration in minutes is:
In which of the following cases does manganese have a +7 oxidation state?
Common oxidation state of Cr?
Which of the following bond enthalpies is the least: \[ C = C, C = O, C \equiv N, C = N \]