Consider the following pairs:

Glacier	River
1. Bandarpunch	Yamuna
2. Bara Shigri	Chenab
3. Milam	Mandakini
4. Siachen	Nubra
5. Zemu	Manas

Which of the pairs given above are correctly matched?

The correct answer is Option 1: 1, 2 and 4.

Let us analyze each of the given glacier-river pairs step-by-step:

1. Bandarpunch Glacier – Yamuna River (Correct)
The Yamuna River originates from the Yamunotri Glacier, which is located on the slopes of the Bandarpunch peak in the Garhwal division of the Himalayas (Uttarakhand). Therefore, pair 1 is correctly matched.

2. Bara Shigri Glacier – Chenab River (Correct)
Bara Shigri is the largest glacier in the Lahaul and Spiti region of Himachal Pradesh. It feeds the Chandra River, which joins the Bhaga River at Tandi to form the Chandrabhaga (Chenab) River. Therefore, pair 2 is correctly matched.

3. Milam Glacier – Mandakini River (Incorrect)
Milam Glacier is located in the Pithoragarh district of Uttarakhand and is the source of the Goriganga River (a tributary of the Kali/Sharda River). The Mandakini River, on the other hand, originates from the Chorabari Glacier near Kedarnath. Therefore, pair 3 is incorrectly matched.

4. Siachen Glacier – Nubra River (Correct)
The Siachen Glacier, located in the Karakoram Range (Ladakh), is the source of the Nubra River, which flows into the Shyok River (a major tributary of the Indus). Therefore, pair 4 is correctly matched.

5. Zemu Glacier – Manas River (Incorrect)
Zemu Glacier is the largest glacier in the Eastern Himalayas, located in Sikkim at the base of Kangchenjunga. It is the source of the Teesta River, not the Manas River. The Manas River originates in Tibet and flows through Bhutan and Assam. Therefore, pair 5 is incorrectly matched.

Thus, the correctly matched pairs are 1, 2, and 4.