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Biological Sciences
50
Modern Materials
21
Atomic Structure
87
Energy Resources
43
Elements and Substances
76
Plant Photosynthesis and Respiration
52
Space and Solar System
230
General Science for Class 6
1155
General Science for Class 7
2197
General Science for Class 8
0
Basics of Electricity
28
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Atoms and Atom Model
The formula that shows the number and kind of atoms which a substance of a molecule contained, is known as
chemical formula
atomic formula
compound formula
molecular formula
Author:
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Physical and Chemical Changes
Chemical reactions are
reversible
irreversible
permanent
temporary
Author:
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Electric Circuits and Currents
For each electric appliance, the fuse should be fixed with
normal reading
estimated reading
accurate reading
approximate reading
Author:
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Particle Model of Matter
Who explained that the pollen grains were being moved by individual water molecules.
Democritus
Aristotle
Robert brown
Albert Einstein
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Elements and Compounds
The dense white fumes which can be seen upon gas ammonia are due to mixing of
hydrogen chloride
nitrogen dioxide
ammonium chloride
calcium chloride
Author:
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Importance of Water
The percentage of salty water is
0.8
0.9
0.95
0.97
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Investigating Space
The constellations that remain there for the whole year, are known as
circumpolar constellations
seasonal constellations
northern constellations
southern constellations
Author:
rikazzz
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Investigating Space
The spectrum tells the astronomers that how
big a star is
hot a star is
bright a star is
colorful a star is
Author:
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Dispersion of Light
A red car looks red because it
reflects all colors except red
absorbs all colors except green and blue
absorbs all colors except indigo
reflects red color and absorbs others
Author:
rikazzz
Comment
Feeding Relationships and Environment
Polar bears have thick fur so that they can
camouflage
keep themselves warm
dry faster
stay alive and healthy
Author:
rikazzz
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