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प्रश्न
Give reason for the following:
Oxygen gas does not affect moist blue litmus paper, but carbon dioxide turns it slightly pink.
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उत्तर
Oxygen is neutral in nature, So, it does not affect blue litmus paper. Whereas Carbon dioxide is slightly acidic in nature, So, it changes blue litmus to slightly pink.
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संबंधित प्रश्न
The most abundant element in the earth’s crust.
Why is hydrogen peroxide preferred in the preparation of oxygen gas ?
What happens when a glowing splinter is introduced in a jar containing oxygen ?
Why is potassium chlorate not used for laboratory preparation of oxygen ?
Fill in the blank :
Oxygen occupies about _____% of air by volume.
Fill in the blanks:
Oxygen is collected by the __________ displacement of ________.
Why is potassium chlorate is not used for laboratory preparation of oxygen ?
How will you obtain dry oxygen in the laboratory?
(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:
oxygens finds utility in welding & cutting of metals.
