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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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Physical and Chemical Changes
When ethene and chlorine combine together, they form
chlorine ethenide
ethene chloride
ethene dichloride
ethene trichloride
Author:
rikazzz
Comment
Electric Circuits and Currents
In our daily life, we find most of the compounds contain
sodium
chlorine
oxygen
hydrogen
Author:
rikazzz
Comment
Energy Resources
Due to constant heat and pressure, buried plants turn in to
wood
coal
fertilizer
oil
Author:
rikazzz
Comment
Physical and Chemical Changes
The gases that required to manufacture ‘PVC’ are
methane and chlorine
ethene and chlorine
methane, ethene and chlorine
propane, oxygen and chlorine
Author:
rikazzz
Comment
Electric Circuits and Currents
Overloading in power sockets can cause them to
spark
burst
catch fire
burn
Author:
rikazzz
Comment
Respiration and Food Energy
A human body removes most of the water through
urination
breathing
sweating
working hard
Author:
rikazzz
Comment
Digestive System
The stomach can hold
1 liter food
2 liters food
1.5 liters food
2.5 liters
Author:
rikazzz
Comment
Human Transport System
Carbon dioxide has to be taken from
lungs to cells
heart to liver
lungs to liver
cells to lungs
Author:
rikazzz
Comment
Electric Circuits and Currents
A thin wire in the bulb made up of tungsten is known as
cable
terminal
tungsten wire
filament
Author:
rikazzz
Comment
Physical and Chemical Changes
The particles of gases are
packed tightly
packed closely
small as compared to that of solids and liquids
far apart
Author:
rikazzz
Comment
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