The GATE Grind

GATE 2026 PI – Question 24

Operations Research and Operations Management · Project Management · 1 mark · Multiple choice

Painting takes six days in a construction project, with total float = free float = 0. Which statement is true?

  1. Painting is a dummy activity.
  2. Painting is noncritical.
  3. Painting can start late without delaying project completion.
  4. Painting cannot start late without delaying project completion.

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Show answer and explanation

Correct answer: (D) Painting cannot start late without delaying project completion.

Explanation

Zero total float means any delay beyond the scheduled start delays project completion, assuming the other activities keep their planned durations. Its six-day duration excludes a dummy activity. Therefore **D**.

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