General Science

Atoms and Atom Model
The number of elements discovered yet, is
100
107
110
117
Author: rikazzz Comment
Physical and Chemical Changes
The melting point of ice is
0 °C
1 °C
100 °C
50 °C
Author: rikazzz Comment
Investigating Space
The stars of the galaxy are continuously moving around the
center of sun
center of galaxy
center of milky way
all of above
Author: rikazzz Comment
Reproduction in Plants
After the root has grown downwards, a small shoot grows upward, towards light. This shoot is known as
radicle
plumule
stem
cotyledon
Author: rikazzz Comment
Sound Waves
Echoes are useful for bats because through it bats can detect
size of the object
position of the object
size and position both
state of the object
Author: rikazzz Comment
Physical and Chemical Changes
The water melts and freezes at
different temperatures
different pressure
same temperature
same pressure
Author: rikazzz Comment
Electric Circuits and Currents
The relationship between magnetism and electricity was discovered in
1818
1819
1820
1821
Author: rikazzz Comment
Electric Circuits and Currents
In 1 minute, 1kW electric fire uses 10 times as much energy as a
1W LED light
10W LED light
100W bulb
0.1W RC Car
Author: rikazzz Comment
Investigating Space
A single teaspoon of a ‘white dwarf’ would weigh many
kilograms
milligrams
tons
pounds
Author: rikazzz Comment
Sound Waves
In air, the speed of sound is
3000 m/s
300 m/s
3300 m/s
330 m/s
Author: rikazzz Comment

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