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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
To multiply multiple elements with a number we use
comma
dot
brackets
cross
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Solutions
The solubility of gases increases with the decrease of
mass
volume
temperature
pressure
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Heat Transfer
Weather is an example of
conduction current
convection current
radiation current
air current
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Elements and Compounds
A molecule which breaks and gives of hydrogen and oxygen is
water
carbon dioxide
air
sodium chloride
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Solutions
In hydroponics, roots of a plant are immersed in solution of dissolved
mineral salts
fertilizers
chemicals
oxygen
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Electric Circuits and Currents
A ‘loudspeaker’ receives
strong waves of sound
strong resistance from source
strong electrical signals
strong voltage
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Investigating Space
Like other living things, the sun will complete its lifetime and
become a cold ball
die
become a comet
turn into old star
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Respiration and Food Energy
When we exhale
the diaphragm is pushed up and the rib cage is pushed downwards
the diaphragm is pulled down and the rib cage is pushed downwards
the diaphragm is pulled down and the rib cage is pulled upwards
the diaphragm is pushed upwards and the rib cage is pulled upwards
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Electric Circuits and Currents
The more the resistors to a circuit, the
lower the resistance
higher the resistance
same the resistance
resistance may vary
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Electric Circuits and Currents
The use of electrical energy
costs money
causes cancer
causes heart disease
lung cancer
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