General Science

Physical and Chemical Changes
Polyethene is used to make
furniture
cooking utensils
plastic bags
decorative items
Author: rikazzz Comment
Heat Transfer
The energy of sun, soil and plants is
escaped from greenhouse
trapped in greenhouse
converted to light energy
converted to nitrate
Author: rikazzz Comment
Electric Circuits and Currents
To reduce the flow of current in an electric circuit and to avoid the danger of overheating resistor is used in a circuit which is called
variable resistor
thermistor
transistor
fixed resistor
Author: rikazzz Comment
Electric Circuits and Currents
‘Semiconductors’ are used in
dynamos
generators
electronics
electrical appliances
Author: rikazzz Comment
Physical and Chemical Changes
Gases flow
slower than solids
slower than liquids
faster than solids and liquids
slower than solids and liquids
Author: rikazzz Comment
Electric Circuits and Currents
Energy is equal to
power/distance
power/time
distance x time
power x time
Author: rikazzz Comment
Human Transport System
The walls of arteries are thick because of
huge amount of blood
pressure of blood
gravity
highly oxygenated blood
Author: rikazzz Comment
Reproduction in Plants
Fertilization occurs
after pollination
before pollination
with pollination
without pollination
Author: rikazzz Comment
Dispersion of Light
The angle which is formed between normal ray and the ray entering a medium is known as
critical angle
angle of incidence
angle of reflection
angle of refraction
Author: rikazzz Comment
Human Transport System
Each atrium and ventricle is separated by
net of tissues
bones
muscles
skin
Author: rikazzz Comment

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