Aryabhatta Research Institute of Observational Sciences, who recently built an indigenous spectrograph, is located in which hillstation?

Amazon Daily Quiz, 16 April 2021. Options to the question – Aryabhatta Research Institute of Observational Sciences, who recently built an indigenous spectrograph, is located in which hillstation?

Darjeeling
Mount Abu
Nainital
Kodaikanal

The correct answer is Nainital.