What are the substances which can rapidly absorb or remove from other substances?
Drying agent
Deliquescent crystals
Anhydrous substance
Efflorescent crystals.
In water which is used for the respiration of aquatic plants and animals?
Dissolved salts
Dissolved oxygen
Dissolved minerals
Dissolved carbondioxide
Which is used as a catalyst in the synthesis of hydrogen chloride from hydrogen and chlorine?
Acid
Alkali
WaterVapour
Blood
The reaction of cold water with one is highly exothermic and vigorous,
Pottasium
Oxygen
Sodium
Nitrogen
Which metal in the red hot condition reacts with steam?
Potassium
Iron
Calcium
Ice, snow,frost etc are the______________state of water.
Solid
Liquid
Gas
Combined
Steam is passed over red hot coke what is the product?
Water gas
Producer gas
Marshal gas
Coing gas
Which supplies essential minerals needed by our body?
Dust
Dirt
Rain water
When Sulphur trioxide dissolve in cold water forming______________
Sulphurous acid
Sulphuric acid
Nitric acid
Nitrous acid
