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GK Questions for Class 9 with Answers

Posted on 02/07/202102/10/2021 By GK Questions No Comments on GK Questions for Class 9 with Answers
Home » GK Questions for Kids (MCQ) » GK Questions for Class 9 with Answers

 

Q.1) Which instrument measures the altitudes?

a) Ammeter

b) Altimeter

c) Anemometer

d) Barometer

 

View Answer
Answer-B

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.

 

View Answer
Answer-A

Explanation: Barograph is used for continuous recording of atmospheric pressure.

 

Q.3) Which instrument measures the pressure of gases?

a) Micro-meter

b) Machmeter

c) Manometer

d) Lactometer

 

View Answer
Answer-C

Explanation:

  • 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

 

View Answer
Answer-A

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

d) Pascal

 

View Answer
Answer-D

Explanation: Pascal invented the Adding machine.

 

Q.6) Who discovered the law of electrostatic attraction?

a) Newton

b) Coulomb

c) Joh Dalton

d) J. Neepse

 

View Answer
Answer-B

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

b) Archemedes

c) Roentgen

d) Henry Becquerel

 

View Answer
Answer-A

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

 

View Answer
Answer-A

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

 

View Answer
Answer-B

Explanation:

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

b) Belem

c) Brasilia

d) Porto Alegre

 

View Answer
Answer-C

Explanation: Brasilia is the capital of Brazil.

 

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