Metals can form ions carrying charges :

It is found in sting of bee;s and ants

Copper sulphate has  water of crystallization

Cl2 reacts with hot cone. NaOH to give:

Identify which pair has polar covalent bonds:

Fusion mixture is combination of :

A cation is derived from

DNA structure was discovered in

Salt are found in

The formula of bleaching powder is

Nelson cell Is used to prepared caustic soda along with gases which of the following gas is produced at cathode

Sodium- potassium alloy is used in nuclear reactor as a:

The valence of chromium is:

Percentage by weight of hydrogen in ocean is:

Which of the following will show negligible effect of temperature on its solubility

Stomach acidity is also called

ice is denser than water

Heat resistance glass is

Who discovered the proton :

Mostly insoluble metallic oxide react with -----to form salt and water

The reaction quotient is useful  because it predict the direction of reaction by value of :

pH of a neutral solution is always

Percentage of organ in atmosphere by volume is

Which one of the following gases diffuses faster  

Nitric acid was prepared by