Identify from following the correct set of thermodynamic conditions for a reaction to be nonspontaneous at all temperatures.

"It is impossible to determine simultaneously the exact position and exact momentum of an electron." This statement is called

Which of the following statements is false about oxygen and sulphur?

Calculate rate constant of a first order reaction having pre exponential factor $1.6 \times 10^{13} \mathrm{~s}^{-1}$.

$$ \left(\mathrm{E}_{\mathrm{a}} / 2.303 \mathrm{RT}=21\right) $$