Online GK Series

This site is dedicated to the aspirants of competitive exams SSC, UPSC, Railways, Postal Assistants, Bank, GATE and NET

Q.

How does a Thermos keep the liquid hot a long time ?

A Because the shining inner walls and double walls of the outer covering do not allow heat to escape
B Because it is packed with gases which release heat
C Because it has internal heating arrangement
D None of the above
Answer & Explanation
Option: [A]

Your Valuable Comments Please...

Please Like Us
Brand

Recommended Books for Competitive Exams

VIEW ALL