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Standard IX
Chemistry
Water as Universal Solvent
The proportio...
Question
The proportion of H and O atoms in the water molecule changes from sea water to tap water.
A
False
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B
True
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Q.
Fill in the blanks.
H
2
O is the _______________ of water. It also represents _______________ molecule of water. There are ________________ atoms of hydrogen and _______________ atom of oxygen in H
2
O. 2H
2
O represents _________________ molecules of water. There are _____________ atoms of hydrogen and _______________ atoms of oxygen in 2H
2
O.
Q.
Water is formed by the chemical combination of hydrogen and oxygen.
A molecule of water consists of 2 atoms of hydrogen and 1 atom of oxygen, combined chemically. Figure 1 represents the molecules in liquid water (black – oxygen atom; gray – hydrogen atom).
Which of the following represents water molecules after liquid water is vaporized on boiling?
(a)
(b)
(c)