Objective-Type Questions

Exercise 6.10 is a 25-question multiple-choice set (choose the correct/most suitable answer from four alternatives) that revises the entire chapter in one pass: scalar and vector triple products and their coplanarity/parallel tests (Q.1–14), lines and their direction cosines and angles (Q.15, 21–22), a line lying in a plane (Q.16), the angle between a line and a plane and their meeting point (Q.17–18), distance from a point to a plane and between parallel planes (Q.19–20, 23, 25), and parallel/perpendicular planes (Q.24). Every item is solved by directly applying one of the boxed formulas or named theorems from §§6.4–6.10 …