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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
Water is a poor electrolyte, so an acid is added to increase its conductivity. The acid is
hydrochloric acid
sulphuric acid
nitric acid
carbonic acid
Author:
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Heat Transfer
Like light and heat, radio waves can also travel through
water
solids
sand
vacuum
Author:
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Comment
Particle Model of Matter
A fixed temperature on which liquid changes into gas is called its
melting point
boiling point
freezing point
evaporation
Author:
rikazzz
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Electric Circuits and Currents
The materials that allow the electrons to flow through them is known as
insulators
conductors
electrolytes
bases
Author:
rikazzz
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Atoms and Atom Model
An atom is electrically
negative
positive
neutral
both positive and negative
Author:
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Dispersion of Light
Light can only pass through
transparent objects
opaque objects
luminous objects
non luminous objects
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Feeding Relationships and Environment
If the color of an insect is green, it has
less chances to survive
more chances to survive
to adopt environment to survive
to adopt the nature of a tree to survive
Author:
rikazzz
Comment
Dispersion of Light
Rainbow is believed to be
spherical
full circle
hot plasma
all of above
Author:
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Comment
Electric Circuits and Currents
For safety, appliances should be equipped with
magnets
resistors
live wire
earth wire
Author:
rikazzz
Comment
Sound Waves
Wind instruments make sound by allowing air to
cut through the tubes
vibrate through the tubes at different lengths
increase the frequency
decrease the frequency
Author:
rikazzz
Comment
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