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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
Show/Hide Answers
Human Transport System
When atria contracts, ventricles
relax
also contract
squeeze
block
Author:
rikazzz
Comment
Electric Circuits and Currents
To remove a steel splinter from a patient’s eye, the surgeon may use
clips
electric current
coils
electromagnets
Author:
rikazzz
Comment
Solutions
If an alkali is added to acid, it’s acidic nature will be
enhanced
reduced
same
constant
Author:
rikazzz
Comment
Atoms and Atom Model
The symbol of “Helium” is
H
He
Na
Hy
Author:
rikazzz
Comment
Atoms and Atom Model
When shell K is completed, next electron moves to
shell M
shell S
shell P
shell L
Author:
rikazzz
Comment
Reproduction in Plants
Essentials for germination of a seed are
water, air and temperature
water and air
air and temperature
air, humidity and pressure
Author:
rikazzz
Comment
Dispersion of Light
A ‘green filter’ would
allow only green color to pass
allow red and blue to pass
allow green color and its components to pass
allow all colors except green
Author:
rikazzz
Comment
Investigating Space
‘Ulysses’ also transmits information of
inner core
mantle
solar wind
outer core
Author:
rikazzz
Comment
Respiration and Food Energy
Cold is caused by
bacteria
viruses
insects
dust
Author:
rikazzz
Comment
Particle Model of Matter
The particles move far from each other and vibrate strongly breaking the attractive force among them upon
melting
boiling
freezing
solidifying
Author:
rikazzz
Comment
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