What is the approximate circumference of earth?
1). 40,000 Km
2). 60,000 Km
3). 80,000 Km
4). 1,00,000 Km
1. A volcano that is not expected to erupt again is called
3. In IT the technique that is used to increase the bandwidth is
5. A fresh egg when placed in salt water will
6. _________ gets converted to phosgene, when exposed to sunlight.
7. Select the related word/letters/number from the given alternatives.81 : 121 : : 49 : ?