K2, Kangchenjunga, Nanda Devi, Doddabetta, Nanga parbat

All options are mountain peaks, but one is different in status/location:

• K2 → Second highest peak in the world (Himalaya)

• Kangchenjunga → Third highest peak (Himalaya)

• Nanda Devi → Highest peak entirely within India (Himalaya)

• Nanga Parbat → Ninth highest peak (Himalaya)

• Doddabetta → Highest peak in the Nilgiri Hills (NOT part of the Himalayas)

So, the odd one out is Doddabetta because it is not in the Himalayas.

K2, कंचनजंगा, नंदा देवी और नंगा पर्वत सभी हिमालय पर्वत श्रेणी के ऊँचे शिखर हैं।
जबकि डोड्डाबेट्टा नीलगिरि पहाड़ियों में स्थित है (हिमालय का हिस्सा नहीं है)।

अतः सही उत्तर: Doddabetta / डोड्डाबेट्टा