General Science

Physical and Chemical Changes
The new form of ‘polythene’ is called
polypropene
polybutene
high density polyethene
low density polyethene
Author: rikazzz Comment
Physical and Chemical Changes
Generally methane gas is known as
compressed gas
liquid gas
natural gas
artificial gas
Author: rikazzz Comment
Mixtures
The percentage of noble gases in air is
0.2095
0.78
0.009
0.0003
Author: rikazzz Comment
Dispersion of Light
The refractive index assumes the entrance of light from
glass
water
vacuum
gas
Author: rikazzz Comment
Importance of Water
The process in which water is passed through filter beds of sand and gravel to remove smaller particles of dust is called
coagulation
sedimentation
filtration
chlorination
Author: rikazzz Comment
Atoms and Atom Model
To date, scientists have made about 26 millions
elements
compounds
alkalis
alkanes
Author: rikazzz Comment
Physical and Chemical Changes
In mixture, the particles of iron and sulphur are
separate
chemically bonded
biologically bonded
permanently bonded
Author: rikazzz Comment
Solutions
Paint gets dissolved in
alcohol
turpentine
water
acetone
Author: rikazzz Comment
Dispersion of Light
The scientist who presented the theory of dispersion of light was
French
English
Chinese
Spanish
Author: rikazzz Comment
Atoms and Atom Model
The symbol of ‘magnesium’ is
Ne
Na
N
Mg
Author: rikazzz Comment

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