For the following questions answer them individually
Name the longest highway single-tube tunnel that reduces the travel time and overall distance between Manali and Keylong.
In February 2022, West Bengal government launched an open-air classroom programme for students from Class 1 to 7, by the name ________.
The Gulf of Khambhat, the Gulf of Kutch and Sundarbans region provide ideal conditions for utilising _________ energy in India.