The most remarkable concept that Dalton’s atomic theory proposed was that of the:
Anonymous Quiz
36%
Atomic mass
25%
Atomic size
19%
Atomic number
20%
All
Compounds composed of metals and non-metals contain
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27%
Non-charged
29%
Charged
37%
Both
7%
None
The word “mole” was introduced around 1896 by:
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13%
Whielum
36%
Dalton
44%
Avagadro
6%
Newton
The relative molecular mass of Na2S2O3.5H2O is
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30%
250 amu
39%
250g
26%
248amu
5%
248g
The proteins and lipids, essential for building the cell membrane, are manufactured by:
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43%
Endoplasmic recticulum
29%
Golgi apperatus
19%
Mitochondria
9%
Lysosome
When the liquid is spun rapidly, the denser particles are forced to the bottom and the lighter particles stay at the top. This principle is used in:
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28%
Centrifugation
40%
Fractional distillation
25%
Evaporation
7%
Tunneling
Which of the following elements is not a metalloid?
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16%
Boron
28%
Silicon
40%
Tungsten
16%
Germanium
The continuous zig-zag movement of colloidal particles in a dispersion medium is called
Anonymous Quiz
24%
Dispersion
32%
Tyndall effect
40%
Browamian movement
5%
None
Which of the following produces seed
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18%
Thallophyta
15%
Bryophyta
18%
Peteridophyta
50%
Gymnosperm