What is nascent Hydrogen ?
Atomic hydrogen liberated in a chemical reaction

What is maximum density of water ?
1000 kg/m3

At what temperature water has the maximum density ?
4 C

What is heavy Hydrogen known as ?
Deuterium

What is heavy water ?
D2O

What is Calgon ?
Sodium hexa meta phosphate

What is horn silver ?
Ore of Silver, AgCl

Which metal is extracted by Mond's process ?
Nickel

What is Cinnabar ?
Ore of Mercury, HgS

What is Brass ?
An alloy of Copper and Zinc