1.
Decibel is the unit of
a.
Density
b.
Light
c. Sound
d.
Elasticity
2.
Fathometer is used to measure:
a.
Earthquakes
b.
Rainfall
c. Ocean Depth
d.
Sound Intensity
c 3.
The apparatus used in submarines to give a clear
view of the object, on the surface of the ocean or ground is known as:
a. Periscope
b.
Sextant
c.
Stereoscope
d.
Telescope
4.
Which of the following metals is used in
aircraft?
a.
Chromium
b.
Titanium
c. Palladium
d.
None of these
5.
Effect of light on photocells produces:
a.
Energy
b. Current
c.
Photosynthesis
d.
None of these
6.
Unit of energy is same as that of
a. Work
b.
Power
c.
Force
d.
Acceleration
7.
The best conductor of elasticity is:
a.
Iron
b.
Aluminum
c.
Copper
d. Silver
8.
Which among the following is in liquid state at
normal temperature:
a.
Sodium
b.
Phosphorus
c. Mercury
d.
None of these
9.
Which matter is used in storage batteries?
a.
Copper
b. Lead
c.
Aluminum
d.
Zinc
10.
A mixture of water and alcohol can be separated
by:
a.
Filtration
b.
Evaporation
c.
Condensation
d. Distillation