General Science for Class 7

Atoms and Atom Model
Every element has its own
valency
isotope
atom
state
Author: rikazzz Comment
Sound Waves
The melting of a metal with the help of ultrasounds is known as
ultra welding
ultrasonic welding
ultrasound welding
ultraviolet welding
Author: rikazzz Comment
Solutions
Alkaline has ph value above
10
14
4
7
Author: rikazzz Comment
Investigating Space
Our ‘solar system’ belongs to
oval shaped system
circle shaped system
spiral shaped system
coil shaped system
Author: rikazzz Comment
Heat Transfer
The good conduction of heat by metals is due to
collision of particles
arrangement of particles
vibration of particles
size of particles
Author: rikazzz Comment
Transportation in Plants
The process in which water and mineral salts are moved from the roots to the leaves by xylem is generally known as
transpiration
translocation
respiration
photosynthesis
Author: rikazzz Comment
Electric Circuits and Currents
When the switch is turned off, the iron bar
holds its magnetism
loses its magnetism
gains current
gains voltage
Author: rikazzz Comment
Atoms Molecules and Ions
Chloride ion has number of protons
17
18
24
34
Author: rikazzz Comment
Heat Transfer
Sunrays warm up the
land before the sea
sea before the land
land and sea at the same time
land but not sea
Author: rikazzz Comment
Dispersion of Light
The light in ‘optical fiber’ is
refracted
reflected
straightened
reflected totally internally
Author: rikazzz Comment

Go to Page