Name the first country which adopted Preamble for its written constitution?

Which was the first bank to introduce cheque system in India?

According to international standard, what is the distance of marathon race?

The important metal used with iron to make it rust-free – 

What is the chemical name of Chalk?

Kathi dance is related to which state of India?

Water can be separated from alcohol water mixture by 

The date and time display on