Online GK Series

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

Connect with Universities & Study Abroad Experts Instantly Connect Now

Q.

The chemical used for cooling in refrigeration is :

A CO2
B NH4CI
C NH4OH
D Liquified ammonia
Answer & Explanation
Option: [C]

Your Valuable Comments Please...

Important EBooks for Competitive Exams

VIEW ALL