Consider the following statements:
1. Meghalaya Plateau is an extension of the Peninsular Plateau of India
2. The gap which separates Meghalaya Plateau from the Peninsular Plateau is known as Malda gap
Which of the 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?