The world’s highest ground based telescopic observatory is located in

Which one of the following statements is correct with reference to our solar system?

A bus is moving with a speed of 30 km/hr ahead of a car with a speed of 50 km/hr. How many kilometres apart are they if it takes 15 minutes for the car to catch up with the bus?

Assume that the moon takes exactly 30 days to complete the cycle and also assume that it rises in the East exactly at 6.48 p.m. on the first day. On the fourth day, at what time will it rise?

With reference to India, which one the following statements is correct?

Consider the following climatic and geographical phenomena: 1. Condensation 2. High temperature and humidity 3. Orography 4. Vertical wind Thunder Cloud development is due to which of these phenomena?

Among living organisms, which one of the following is the most responsible factor for bringing about the origin of a new species?