Advertisements
Advertisements
प्रश्न
How will you obtain dry oxygen in the laboratory?
उत्तर
Dry oxygen can be obtained if the gas so collected is passed f over a tower containing drying agents like phosphorus pentaoxide, fused calcium chloride or bubbling the gas through concentrated sulphuric acid. Then the dry gas is collected by downward displacement of mer – cury.
APPEARS IN
संबंधित प्रश्न
Why is oxygen collected by downward displacement of water?
What happens when mercuric oxide is heated?
Name the three types of oxidation processes. In which of these large amount of heat and light energy are produced?
Why is potassium chlorate is not used for laboratory preparation of oxygen ?
State two characteristics of Acidic oxides.
Tick (√ ) the most appropriate answer.
The catalyst used in the preparation of oxygen from hydrogen peroxide is :
State any four physical properties of oxygen gas.
Give reasons for the following:
patients suffering from lung problems are kept in an oxygen tent.
Give reason for the following:
Oxidation of sulphur results in a product which turns moist blue litmus red.
Phosphorous bums with suffocating smell and gives ______.
