Questions

World Population day is an annual event, observed on July 11 every year, which seeks to raise awareness of global population issues. 

Canada has the longest coastline than any other countries in the world. It measures 1,51,020 miles long approximately. Norway, Indonesia, Greenland and Russia being in 2, 3, 4 and 5th places.

'Rare earth'(They are all metals)

As it is said that density of gold is greater than that of density of silver, so silver occupies a greater volume than gold. So it has more upthrust from the water, although they both show the same weight under water, there is more silver present. Hence silver piece will weigh more.

IEEE 1284 is a standard that govern parallel communications.

• IEEE 1284 is a standard that defines bi-directional parallel communications between computers and other devices.

• It was originally developed in the 1970s by Centronics, and was widely known as the Centronics port, both before and after its IEEE standardization.