List of top Chemistry Questions

For which one of the following sets of four quantum numbers, an electron will have the highest energy? 
quantum numbers
How many conformations are possible for ethane?
At 25°C and 1 atm pressure, the enthalpy of combustion of benzene (l) and acetylene (g) are \(3268 \, \text{kJ mol}^{-1}\) and \(1300 \, \text{kJ mol}^{-1}\), respectively. The change in enthalpy for the reaction 
the enthalpyis
The strongest acid among the following is:
Which of the following compounds does not show Lassaigne’s test for nitrogen? (A) Urea
(B) Hydrazine
(C) Phenylhydrazine
(D) Azobenzene
Specific conductance of 0.1 M HNO\(_3\) is \(6.3 \times 10^{-2} \, \text{ohm}^{-1} \, \text{cm}^{-1}\). The molar conductance of the solution is:
The decreasing order of reactivity towards dehydrohalogenation (\(E_1\)) reaction of the following compounds is: 
decreasing order
 
The IUPAC name for
1-chloro-4-methyl-2-nitrobenzene
How many electrons are involved in the following redox reaction? \[ \text{Cr}_2\text{O}_7^{2-} + \text{Fe}^{2+} + \text{C}_2\text{O}_4^{2-} \rightarrow \text{Cr}^{3+} + \text{Fe}^{3+} + \text{CO}_2 \quad (\text{Unbalanced}) \] 
 
Which of the following statements is false?
\(PCl_{5}\) is dissociating 50% at 250°C at a total pressure of \( P \) atm. If the equilibrium constant is \( K_p \), then which of the following relation is numerically correct?
The statement that is not correct for periodic classification of elements is:
Polarizability of halide ions increases in the order:
The wavelength (in cm) of the second line in the Lyman series of the hydrogen atomic spectrum is (Rydberg constant \( R \, \text{cm}^{-1})\).
Which of the following does not form a chelate?
Intermolecular forces in nylon-6, 6 are:
Which of the following acids is a vitamin?
Hoffmann bromamide degradation reaction is shown by which of the following?
Hoffmann bromamide
The reaction 
Gattermann-Koch reaction
Phenol does not undergo nucleophilic substitution reaction easily due to:
Which of the following alkyl halides will undergo \( S_N1 \) reaction most readily?
Product of the following reaction is:
Product of the following reaction is:
Oxidation number of H in NaH, CaH$_2$, and LiH, respectively is:
Lanthanoid which has the smallest size in \( +3 \) state is:
The pH of a saturated solution of \( \text{Ca(OH)}_2 \) is 9. The solubility product (\( K_{sp} \)) of \( \text{Ca(OH)}_2 \) is: