Which of the following statements is NOT correct about Atal Tunnel?

The correct answer is Option (1) → It is built in the Shivalik Ranges of the Himalayas.

Option (1) It is built in the Shivalik Ranges of the Himalayas. — Not correct about Atal Tunnel. It is built in the Pir Panjal range of the Himalayas, at an altitude of 3000 metres.

Option (2) It was built by the Border Road Organisation. — Correct about Atal Tunnel. The BRO builds roads in high mountain areas along the borders.

Option (3) It connects Manali to Lahaul-Spiti Valley. — Correct about Atal Tunnel. It keeps the valley open throughout the year. Earlier, snow cut the valley off for about six months.

Option (4) It is the World's Longest Highway Tunnel. — Correct about Atal Tunnel. It is 9.02 km long.

Note: The Atal Tunnel sat in a small "Do You Know?" box, and NTA still found it. Those small boxes are part of the syllabus too.