Advertisements
Advertisements
प्रश्न
The most abundant element in the earth’s crust.
Advertisements
उत्तर
Oxygen.
APPEARS IN
संबंधित प्रश्न
An oxide and a carbonate containing oxygen.
Two substances which undergo rapid oxidation.
Fill in the blank:
Oxygen occupies about ______ of air by volume.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
Potassium nitrate crystals on heating strongly yield potassium nitrite and ________ gas.
Statement given below is incorrect. Write the correct statement :
The oxygen gas turns moist blue litmus red.
Statement given below is incorrect. Write the correct statement :
Moist oxygen causes rusting in carbon.
Write ‘True’ or ‘False’ in front of following statement.
Under laboratory conditions, the oxygen gas is insoluble in water.
(a) Starting from hydrogen peroxide how is oxygen gas prepared in laboratory?
(b) What is the function of manganese dioxide?
(c) Write fully balanced equation for the liberation of oxygen from hydrogen peroxide.
(d) Why is the above method preferred to any other method?
Give reasons for the following:
patients suffering from lung problems are kept in an oxygen tent.
Mention the physical properties of oxygen.
