He coined first time the term Symbol of an element

• John Dalton

• Avogadro

• Berzelius

• Aristotle

The element cobalt is represented by following

• CO

• Co

• Cob

• COB

The atom or group of atom carrying either positive or negative charges are commonly known as

• Cation

• Anion

• Valency

• Radicals

Sodium ion is iso electronic to One of the following atom

• Argon

• Neon

• Magnesium ion

• None of above

The oxy acid amongst the following is

• Hydrochloric acid

• Hydrosulphuric acid

• Sulphuric acid

• None of above

The alkali amongst the following is

• Sodium hydroxide

• Calcium hydroxide

• Ferrous hydroxide

• Copper hydroxide

A chemical equation does not provide information about

• Reactants

• Products

• Volumes of reactants and products

• Rates of chemical reaction

Following statement is true for alkali

• Only water soluble bases are called as alkali

• All bases are alkali

• All Alkalies are bases

• All water insoluble bases are alkali

The chemical name of the compound Na₂S₂O₃

• Sodium thiosulphate

• Sodium sulphate

• Sodiumdisulphidetrisulphide

• Disodiumsulphideoxide

The corrected formula of potassium dichromate is

• K₂CrO₇

• K₂Cr₂O₇

• KCrO7

• KCrO