The correct answer is 1, 2 and 3.

Dodabeta Peak:

• It is the highest mountain in the Nilgiri hills and is the second-highest peak in South India next to Anamudi Peak.
• Doddabetta Peak is in the Indian state of Tamil Nadu lies in the Nilgiri Hills, at the intersection of the Western Ghats and the Eastern Ghats. Hence, Statement 3 is correct.
• Doddabetta means ‘Big Mountain’ in Badugu Language.

Molasses Basin:

• Mizoram is also known as Molasses Basin. Hence, Statement 1 is correct.
• Mizoram is known as the land of rolling mountains.
• It has a huge number of mountains. formation of most mountains is accompanied by the formation of foreland basin or in simple terms valley type depression which runs parallel to mountains.
• These depressions get accumulated with unconsolidated deposits known as molasses basin.

Loktak Lake:

• It is the largest freshwater lake in Manipur (Northeast India). Hence, Statement 2 is correct.
• It is famous for the phumdis floating over it.
• Phumdis are the heterogeneous mass of vegetation, soil, and organic matter at various stages of decomposition.
• Keibul Lamjao National Park is the centre of attraction.
• It is the only floating national park in the world. It is home to endangered Sangai.
• Loktak lake is a wetland of international importance under the Ramsar Convention.
• It has been listed under the Montreux Record since 1993.