Which state? would one pass through while travelling from Mumbai to Kashmir?

Why did Gaurav Jani say—“This place is so high that it is difficult to breathe normally?”

During winters, Tashi and his family live on the ground floor. Why would they be doing so?

Is Manali a plain or hilly area? In which state is it?

Gaurav Jani passed through several states while going from Mumbai to Delhi. Find the capital cities of these states.