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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
Atoms and Atom Model
The symbol of “Fluorine” is
C
N
O
Fl
Author:
rikazzz
Comment
Mixtures
A separation technique which is used to obtain liquid from a solution by heating, is called
fractional distillation
filtration
evaporation
distillation
Author:
rikazzz
Comment
Heat Transfer
White painted roof and walls prevent
excess heat loss
excess heat absorption
excess heat loss and absorption
excess heat transfer
Author:
rikazzz
Comment
Electric Circuits and Currents
Another example of a good electric conductor is
gold
copper
steel
plastic
Author:
rikazzz
Comment
Dispersion of Light
The critical angle for “Perspex” is
40 degree
42 degree
44 degree
46 degree
Author:
rikazzz
Comment
Electric Circuits and Currents
An instrument that gives an accurate measurement of the electric current flowing in a circuit is known as
voltmeter
galvanometer
barometer
ammeter
Author:
rikazzz
Comment
Feeding Relationships and Environment
The right sequence of a food chain is
grass, cheetah and rabbit
rabbit, grass and cheetah
cheetah, rabbit and grass
grass, rabbit and cheetah
Author:
rikazzz
Comment
Electric Circuits and Currents
The weakest link in a circuit is formed by a
fuse
resistor
thermistor
transistor
Author:
rikazzz
Comment
Investigating Space
At the time of Egyptian astronomer Ptolemy, discovered constellations were
36
40
44
48
Author:
rikazzz
Comment
Importance of Water
Hot water also stimulates the growth of
algae
fungi
bacteria
viruses
Author:
rikazzz
Comment
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