Which occurs in nature as a decay product of thorium and uranium minerals?
Sulphur
Selenium
Tellurium
Polonium
The catalyst used in the reaction between hydrogen chloride and Oxygen is
Copper chloride
Vanadium Pentoxide
Sulphuric acid
Hydrochloric acid
Pure ozone is a ____________gas.
Colourless
Dark blue
Pale blue
Violet - black
The combustion of hydrozins in ________________provides tremendous thrust in rockets.
Liquid Nitrogen
Liquid carbon dioxide
Water
liquid oxygen
The chemical formula of copper pyrites is
ZnS
PbS
CuFeS2
BaSO4
An Oxide that combines with water to give an acid is termed as __________oxide.
acidic
basic
amphoteric
neutral
An Oxide which shows the characteristics of both acidic as well as basic oxides is known as
amphoteric oxide
neutral oxide
amphiprotic oxide
metallic oxide
Nitric oxide reacts with ozone to give __________and ___________ .
N2O,O2
NO2.O2
N2O5,O2
N2O4,O2
Electrolysis of water leads to the release of __________at the anode.
Hydrogen
Hydrogen peroxide
Oxygen
Nitrogen
Which oxides can be classified in to acidic oxides,basic oxides and amphoteric oxides?
Simple Oxides
Mixed Oxides
Complex Oxides
Metallic Oxides