Q.1) Which instrument measures the altitudes?
Explanation: Altimeter measures the altitudes and it is used in the aircraft.
Q.2) Barograph is used for what purpose?
a) Continuous recording of atmospheric pressure.
b) Measures atmospheric pressure.
c) To measure heat radiation.
d) Measure quantities of heat.
Explanation: Barograph is used for continuous recording of atmospheric pressure.
Q.3) Which instrument measures the pressure of gases?
- Micro-meter = Converts sound waves into electrical vibrations.
- Machmeter = Determine the speed of an aircraft in terms of the speed of sound.
- Lactometer = It is the instrument that measures the relative density of milk to determine purity.
Q.4) Who invented the Diesel Engine?
a) Rudolf Diesel
b) Alferd Nobel
c) C. Biro
d) C. Hugyens
Explanation: Rudolf Diesel is the inventor of the Diesel Engine.
Q.5) Adding the machine was invented by?
a) Jacques and Joseph Montgolfier
b) E. Torricelli
c) Charles Babbage
Explanation: Pascal invented the Adding machine.
Q.6) Who discovered the law of electrostatic attraction?
c) Joh Dalton
d) J. Neepse
Explanation: It is also called Coulomb’s law, or Coulomb’s inverse-square law.
Q.7) Who discovered Photography on paper?
a) W. Fox Talbot
d) Henry Becquerel
Explanation: Photography on paper was discovered by W. Fox Talbot.
Q.8) What is the S.I unit of Angular Momentum?
a) Kilogram square meter per second
b) Kilogram meter per second
c) Newton per meter
d) Newton per second
Explanation: The S.I unit of Angular Momentum Kilogram square meter per second (Kgm2s-1).
Q.9) What is the S.I unit of Thermal Conductivity?
a) Watt per degree Celcius
b) Watt per meter per degree Celcius
c) Joule per kilogram per kelvin
d) Joule per kelvin
Thermal Conductivity is defined as the intrinsic ability of a material to transfer heat. The S.I unit of Thermal Conductivity is Watt per meter per degree Celcius (Wm-1C-1).
Q.10) What is the capital of Brazil?
a) Rio de Janerio
d) Porto Alegre
Explanation: Brasilia is the capital of Brazil.