Which causes disorders of central nervous system,poor vision and bones?

________________is inflammable.

_____________discovered hydrogen.

What is applied on doors and windows etc.?

The substance that dissolves in water or in any other liquid is called as

Metals like potassium, sodium and calcium react with cold water to form the corresponding alkali and

Which is used to produce hydro electricity in dams and electricity in rural power plants and nuclear plants?

Oxides of certain non-metals like carbon, sulphur and phosphorous dissolve in water to form the corresponding

Bring a burning splinter near the open end of the cathodic limb. The gas burns with a blue flame and is put off with a pop sound. The gas is

Iron is mixed with small amounts of nickel and chromium to form an alloy is called