भारत मौसम विज्ञान विभाग (IMD) के अनुसार, एक गंभीर सूखा तब घोषित किया जाता है जब वर्षा की कमी सामान्य दीर्घकालिक औसत वर्षा के कितने प्रतिशत से अधिक हो जाती है?

The Aravalli Hills extend for about 800 km from south-west Gujarat to north-east Delhi and are locally known near Delhi as:

Which of the following rivers flows through the Panna Tiger Reserve in Madhya Pradesh?

In which month does the south-west monsoon enter Andhra Pradesh, providing around 66% of the state's rainfall?