List of top Chemistry Questions asked in CUET (UG)

Which of the following is an example of an addition reaction?

What is the \( n \)-factor of \(KMnO_{4}\) in acidic medium?

The enthalpy of combustion of methane is \(-890 \, \text{kJ/mol}\). What is the enthalpy change when 8 g of methane is burned?
(Molar mass = 16 g/mol)

What is the percentage of carbon in ethanol (\(C_{2}H_{5}OH\)) ? 
(Atomic masses: C = 12, H = 1, O = 16)

A compound contains 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass. What is its empirical formula?
(Atomic masses: C = 12, H = 1, O = 16)
Which metal is extracted by electrolytic reduction?