Questions

The Great wall is a mighty monument to the building skill of ancient China. This wall, built of stone and earth to a height of 6 metres and extending over 2400 kilometres of hills and valleys, links the east coast with the mountains of the west right across northern China. The wall was wide enough for a carriage to go through.At intervals of every few hundred metres were located watch towers for warriors. Such a large study construction must have taken decades and an army of labourers to complete it. 

Ulaanbaatar is the capital of Mongolia

Let amount of milk removed = 2x litre
So, amount of water added = x litre
Now → (165 − 2x)/x = 5/3
x = 45 lit

FTP-File Transfer Protocol

Microprocessor is a program-controlled device, which fetches the instructions from memory. decodes and executes the instructions. Most Micro Processors are single-chip devices.

Carbon monoxide is a common atmospheric pollutant in the world which is produced in combustion process in automobiles and industries. It has no smell and cannot be seen.

The scientific study of rocks is called petrology, which is an essential component of geology.