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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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Investigating Space
To complete one rotation, sun takes approximately
two days
three days
four days
five days
Author:
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Comment
Physical and Chemical Changes
The color of solid magnesium is
dark grey
silver grey
black
whitish silver
Author:
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Comment
Electric Circuits and Currents
Electrolysis is also used to purify
sodium
copper
silver
potassium
Author:
rikazzz
Comment
Human Transport System
All veins carry deoxygenated blood except
renal vein
hepatic vein
mesenteric vein
pulmonary vein
Author:
rikazzz
Comment
Electric Circuits and Currents
Electrons release energy in the form of
heat energy
thermal energy
sound energy
light energy
Author:
rikazzz
Comment
Physical and Chemical Changes
In the process of forming iron sulfide by iron and sulphur, the reactant is
iron only
sulphur only
iron and sulphur both
sulphuric acid
Author:
rikazzz
Comment
Atoms and Atom Model
The particles which have equal mass are
protons and electrons
protons and neutrons
neutrons and electrons
photons and protons
Author:
rikazzz
Comment
Elements and Compounds
Elements resting in the same group share same
physical properties
chemical properties
special properties
bonding properties
Author:
rikazzz
Comment
Transportation in Plants
The contents that a plant uses to make food, are
water and mineral salts
mineral salts and oxygen
water, mineral salts and carbon dioxide
water and oxygen
Author:
rikazzz
Comment
Atoms and Atom Model
The attraction of two ions due to opposite charge is known as
ionic bonding
covalent bonding
metallic bonding
dative bonding
Author:
rikazzz
Comment
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