Which gas is used in hospitals for the artificial respiration ?
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What is weak acid?
How many electrons does benzene have?
Which is the best conductor of electricity?
What are the products formed after cod analysis?
Give the others form of iron ore.
State beer’s law.
What is slacked lime ?
Why a hot day in Calcutta causes more discomfort than are equally hot day in Delhi ?
What is a cell?
Explain the following ? Matter, Element, Atom, Compound, Molecule, Mixture, Physical change, Chemical change
Why does the snow on the mountains not melt all at once, not changed into water very slowly?
what is the relation between Total organic carbon and Chemical Oxygen demand?