The first ionization energy (in kJ/mol) of Na, Mg, Al and Si respectively, are :

Which of the following statement is not true for glucose?

The strength of an aqueous NaOH solution is most accurately determined by titrating :
(Note : consider that an appropriate indicator is used)

The rate of a certain biochemical reaction at physiological temperature (T) occurs 10⁶ times faster with enzyme than without. The change in the activation energy upon adding enzyme is :