General Science for Class 7

Investigating Space
The telescopes that use mirrors instead of lenses are known as
Radio telescopes
Reflecting telescopes
Refracting telescopes
Hubble telescopes
Author: rikazzz Comment
Sound Waves
High frequency means
low pitch
high pitch
low amplitude
high wavelength
Author: rikazzz Comment
Atoms and Atom Model
The second shell with the second energy level is known as
shell B
shell L
shell P
shell K
Author: rikazzz Comment
Atoms and Atom Model
Gamma rays are also used to check the
strength of metals
properties of metal
thickness of metal
all of them
Author: rikazzz Comment
Electric Circuits and Currents
If you are the only conductor around, the electricity will flow through
you
me
us
insulator
Author: rikazzz Comment
Sound Waves
Vibrations are caused due to
change of temperature of air
change of pressure in air
effect of humidity on air
level of heat in air
Author: rikazzz Comment
Importance of Water
For desalination plant, the first priority is
reserves of natural gas
reserves of water
reserves of oil
reserves of coal
Author: rikazzz Comment
Investigating Space
The name of a star in circumpolar constellation is
Sirius
Andromeda
Whirlpool
Polaris
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Solutions
Dilute acids form hydrogen gas when they react with
reactive carbonates
reactive metals
oxides
amino acids
Author: rikazzz Comment
Reproduction in Plants
The surface of a stigma is often
hairy
greasy
sticky
dry
Author: rikazzz Comment

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