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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
The filament bulb glows, when it reaches the temperature of
1000 °C
1100 °C
1200 °C
1300 °C
Author:
rikazzz
Comment
Reproduction in Plants
Each ovule contains
female sex cells
male sex cells
bisexual cells
transsexual cells
Author:
rikazzz
Comment
Electric Circuits and Currents
The process used in electroplating is called
electrodeposition
cathoding
anoding
electrorides
Author:
rikazzz
Comment
Physical and Chemical Changes
Melting point of ‘sulphur’ is
113 °C
311 °C
both
none
Author:
rikazzz
Comment
Physical and Chemical Changes
‘Bakelite’ is used to
insulate heater handles
increase heat conductivity
increase electrical conductivity
insulate electrical equipment
Author:
rikazzz
Comment
Atoms and Atom Model
If no loss or gain of electrons occur by mixing of two atoms, we say that they may be attached to each other due to
proton attraction
neutron attraction
sharing of electrons
opposite charges
Author:
rikazzz
Comment
Sound Waves
The number of things that effect the sound produced by vibrating strings is
1
2
3
4
Author:
rikazzz
Comment
Electric Circuits and Currents
When switch is closed, the magnet pulls out the
splinter from eye
eyeball
lens of the eye
retina
Author:
rikazzz
Comment
Electric Circuits and Currents
In our homes, electric supply uses
series circuit
parallel circuit
both circuits
electrionic circuit
Author:
rikazzz
Comment
Physical and Chemical Changes
The first thing that happens during chemical reaction is that
a new substance is formed
a substance is reversed to its components
energy is given out
atoms remain same
Author:
rikazzz
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