12.47. The common techniques used for purification are as follows:

(a) Sublimation

(b) Crystallisation

(c) Distillation

(d) all of the above

The standard enthalpy of combustion at 25°C of hydrogen, cyclohexene (C₆H₁₀) and cyclohexane (C₆H₁₂) are –241, –3800 and –3920 kJ mol–1 respectively. Calculate the standard enthalpy of hydrogenation of cyclohexene.

Kindly Consider following table–

(i)    The correct match is–

 

 

  

The total number of spectral lines formed when an electron jumps from n₇ → n₁ energy level.

How many faradays are required to reduce 0.1 mole of MnO⁻₄ to Mn+² ?

In the given reaction -