• #### NDA Exam General Ability Study Material

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a) Temperature
b) Velocity
c) Pressure
d) Density

a) Vaporization
b) Freezing
c) Melting
d) Sublimation

##### The audible frequency range of a human ear is

a) 20 Hz to 200 Hz
b) 2 Hz to 20 Hz
c) 200 Hz to 2000 Hz
d) 20 Hz to 20000 Hz

a) 1 mm
b) 1 cm
c) 1 micron
d) 1 angstrom

a) Hertz
b) Maxwell
c) Marconi
d) Newton

a) Sexant
b) Telstar
c) Spherometer
d) Refractometer

##### The Outer part of a Railway track near the bend or a curve is generally raised

a) To prevent the fast wear and tear of the railway track.
b) To produce the necessary centripetal force
c) To produce the necessary gravitational force
d) To enhance the speed of train

##### Q.What are Sunspots?

a) These are great flames of gases which shoot out of the sun
b) These are cooler areas which move about on the sun`s surface and show up as dark spots.
c) These are areas of the Sun where the heat is most intense which shown up as dark spots
d) These are areas of the Sun where nuclear fission takes place.

a) 6
b) 5
c) 4
d) 7

##### What is the technology used in a compact disc?

a) Electrical
b) Laser
c) Electro magnetic
d) Aeronautical