![concentration of reactant [R] and time](https://images.collegedunia.com/public/qa/images/content/2025_07_10/image_8b8de08b1752140122510.png)
Consider the following compounds. Arrange these compounds in a n increasing order of reactivity with nitrating mixture. The correct order is : 
If vector \( \mathbf{a} = 3 \hat{i} + 2 \hat{j} - \hat{k} \) \text{ and } \( \mathbf{b} = \hat{i} - \hat{j} + \hat{k} \), then which of the following is correct?