MCQ
Which of the following has minimum $pK _{ b }$ value?
- ✓N-methyl methan amine
- BN,N-dimethyl methan amine
- CMethanamine
- DBenzenamine
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Statement $I$: Aqueous solution of $K _2 Cr _2 O$, is preferred as a primary standard in volumetric analysis over $Na _2 Cr _2 O$, aqueous solution
Statement $II:$ $K _2 Cr _2 O$, has a higher solubility in water than $Na _2 Cr _2 O _7$
In the light of the above statements, choose the correct answer from the options given below: