Class 12 Chemistry 2024 Board Exam

Assertion (A) : Aniline is a stronger base than ammonia.
Reason (R) : The unshared electron pair on nitrogen atom in aniline becomes less available for protonation due to resonance.

Acetic acid reacts with PCl₅ to give :

Which one of the following first row transition elements is expected to have the highest third ionization enthalpy ?

For an electrolyte undergoing association in a solvent, the van't Hoff factor :

For the reaction X + 2Y → P, the differential form equation of the rate law is :

Two among the three components of DNA are β-D-2-deoxyribose and a heterocyclic base. The third component is :

Which of the following alkyl halides will undergo SN₁ reaction most readily ?

Which of the following compounds will give a ketone on oxidation with chromic anhydride (CrO₃) ?

Calculate the potential of Iron electrode in which the concentration of Fe²⁺ ion is 0.01 M.
(E° Fe²⁺/Fe = – 0.45 V at 298 K)
[Given : log 10 = 1]

Write the formula for the following coordination compound :
Potassium tetrahydroxidozincate (II)