Optic fibres are mainly used for which of the following?
Nautical mile is a unit of distance used in
Light year is a measurement of
What is the unit for measuring the amplitude of a sound?
kilohertz is a unit which measures
Knot is a unit of speed of which of the following?
Very small time intervals are accurately measure by
Reading of a barometer going down is an indication of
One kilometre is equal to how many miles?
Decibel is the unit for
Which of the following is used as a moderator in nuclear reactor?
One fathom is equal to
One horse power is equal to
Which among the following is a positively charged particle emitted by a radioactive element?
Fathom is the unit of
Atoms are composed of
Which is/are the important raw material(s) required in cement industry?
In an atomic explosion, enormous energy is released which is due to
Which type of fire extinguisher is used for petroleum fire?
Isotopes are separated by
Which of the following is commonly called a 'polyamide'?
Epoxy resins are used as
Detergents used for cleaning clothes and utensils contain?
Water is a good solvent of ionic salts because
The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
Bromine is a
Potassium nitrate is used in
What is laughing gas?
Which of the following was to be discovered first in the chromospheres of the sun?
When an iron nail gets rusted, iron oxide is formed
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