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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
‘Radioisotopes’ are used to trace
path of elements in a body
harmful substances in a human body
cancer cells in a human body
harmful substances in metals
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Physical and Chemical Changes
Physical change only effects the
arrangement of particles
energy of particles
arrangement and energy of particles
size of particles
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Reproduction in Plants
Some plants have seeds with hooks for
pollination
fertilization
dispersion
reproduction
Author:
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Simple Chemical Reactions
If baking soda or fruit salt is mixed with vinegar, there takes place a
chemical reaction
physical reaction
transference
both a and b
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Investigating Space
As a star collapses itself, it becomes extremely
hot
cold
dense
small
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Atoms and Atom Model
The rays that can penetrate into metal are
x-rays
ultra violet rays
gamma rays
radio waves
Author:
rikazzz
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Mixtures
A separation technique which uses fractionating column to separate different liquid components in a mixture with different boiling points by heating the mixture is called
fractional distillation
filtration
evaporation
distillation
Author:
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Investigating Space
First, stars were formed in clumps like a large cluster of
planets
stars
small galaxies
small stars
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Importance of Water
Oil on the feathers prevents
birds from keeping themselves warm
bugs from entering the bird’s feathers
cold air from entering the body
dust to enter feathers
Author:
rikazzz
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Dispersion of Light
The wave and a ray that could be present at the top and bottom of seven lights are
gamma rays and micro waves
x-rays and radio waves
ultraviolet rays and infrared waves
gamma rays and infrared waves
Author:
rikazzz
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