Online GK Series

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

Get Attractive Job


The substance that hardens when mixed with water is:

A Red lead
B Gypsam salt
C Epsom salt
D Plaster of Paris
Answer & Explanation
Option: [D]

Your Valuable Comments Please...

Important EBooks for Competitive Exams