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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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Electric Circuits and Currents
Small magnets are used in
switches
plugs
electric bells
fuses
Author:
rikazzz
Comment
Mixtures
Ink has different constituents which are soluble in
water
alcohol
chemical
drinks
Author:
rikazzz
Comment
Dispersion of Light
The colors on the disk are mixed
by our eyes
due to fast rotations
due to humidity
due to pressure
Author:
rikazzz
Comment
Sound Waves
Bats also use ‘ultrasound’ to prevent
predators
homes
preys
obstacles
Author:
rikazzz
Comment
Solutions
‘Aqueous’ solution includes
salt solution
sugar solution
mineral water
all of them
Author:
rikazzz
Comment
Physical and Chemical Changes
The intermolecular force of attraction between molecules in solids are
weaker than gases
stronger than gases but weaker than liquids
stronger than both, liquids and gases
weaker than gases but stronger than liquids
Author:
rikazzz
Comment
Dispersion of Light
The convex lens
shrinks the image
magnifies the image
sharpens the image
increases the contrast of the image
Author:
rikazzz
Comment
Reproduction in Plants
The transfer of pollen grains from anther to stigma of the same flower, or to the stigma of another flower on the same plant is known as
self reproduction
cross reproduction
self pollination
cross pollination
Author:
rikazzz
Comment
Feeding Relationships and Environment
The energy at each trophic level is transformed to the next level is only
0.005
0.001
0.011
0.1
Author:
rikazzz
Comment
Heat Transfer
When hot air rises
cool air takes its place
cools down and falls back
forms clouds
condenses
Author:
rikazzz
Comment
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