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प्रश्न
Fill in the blank :
____________ discovered the oxygen gas.
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उत्तर
Joseph Priestly discovered the oxygen gas.
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संबंधित प्रश्न
A chemical called oxygenated water.
An oxide and a carbonate containing oxygen.
What happens when a glowing splinter is introduced in a jar containing oxygen ?
Fill in the blank:
Oxygen is slightly _________ than air.
Why is potassium chlorate is not used for laboratory preparation of oxygen ?
Tick (√ ) the most appropriate answer.
The catalyst used in the preparation of oxygen from hydrogen peroxide is :
(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?
State any four physical properties of oxygen gas.
Describe what you will observe and write fully balanced equation when the following is introduced in a jar of oxygen.
Burning magnesium
Give reasons for the following:
oxygens finds utility in welding & cutting of metals.
