___, found in blood, is responsible for oxygen transportation.
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Which type of reaction occurs when carbon burns in oxygen to give carbo dioxide?
Which of the following metals does NOT react with Oxygen even at a high temperature?
In a water molecule, the ratio of mass of Hydrogen to the mass of Oxygen is always:
The mass of one molecule of oxygen is
A/an ___ flame is produced when the oxygen supply is sufficient.
Acids that contain Hydrogen and other non-metallic element(s), except Oxygen, are called
What is the ratio of masses of hydrogen and oxygen in the water?
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