With reference to the famous 'Chhau dance', consider the following statements :
1. It is a combination of music, dance and Martial arts.
2. It is a traditional dance form of southern Nilgiris.
3. It is accompanied by the musical instruments like Mahuri and Dhola.
Which of the statements given above is /are correct?

Arrange the following hills according to their location from north to south:

$1$. Nallamala hills

$2$. Shevaroy hills

$3$. Palkonda hills

$4$. Javadi hills

The property which helps an insect to move on the surface of the water is ______:

Which among the following rivers flows through Tibet and is known as the Yarlung Tsangpo?