phenolphthalein solution?
How is urea prepared?
Short answer questions.
a C, is not collected over water, why?
b. CO is important for green plants, why?
Why is CO, gas used as fire extinguisher?
It is dangerous to clean well remaining closed for a long time, why?
Which is collected by downward displacement of air, why?
d
why?
A moist red litmus paper is used for testing ammonia gas, why?
Ammonia gas cannot be collected in an erect jar, why?
Ammonia gas neither be collected in gas jar by the method of down
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What happen it NH, gas is passed with water containing few
What happens when burning magnesium is inserted in the jar containing
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