Question Discussion & Solution

The correct answer is binary.

Key Points

• Binary language is used by computers to process data.
• Binary code was invented by Gottfried Leibniz.
• A binary code is a two-symbol system that represents text, computer processor instructions, or any other data.
• The binary number system's "0" and "1" are frequently utilized as the two-symbol system.
• Each character, instruction, or other object is assigned a pattern of binary digits, commonly known as bits, by the binary code.

The correct answer is 8.

• 8 UNESCO World Heritage Sites are located in Rajasthan.

Key Points

• UNESCO World Heritage Sites in Rajasthan
  • Amber Fort
  • The Walled City of Jaipur
  • Keoladeo National Park
  • Jaisalmer Fort
  • Gagron Fort
  • Ranthambore Fort
  • Kumbhalgarh Fort
  • Chittorgarh Fort
  • Jantar Mantar

Confusion Points

• There are total UNESCO World Heritage Sites in Rajasthan 9 but this is the previous year's question paper as Walled City of Jaipur added in 2019.

Additional Information 

• UNESCO World Heritage Sites in India 
  • ​There is a total of 40 world heritage sites out of which 32 are cultural, 7 are natural and 1 is mixed in India till now.
  • The last added World Heritage site in India was The Walled city of Jaipur.

• Dioptre is the S.I. Unit of Power of a lens.
• A dioptre is equal to the reciprocal of the focal length measured in metres.
• Power of a lens is the ability of a lens to converge or diverge light rays depending on its focal length.

The correct answer is Hygrometer.

Key Points

• Hygrometer
  • A hygrometer is an instrument for measuring the relative humidity of the atmosphere.
  • The hygrometer was invented by Leonardo da Vinci.

Additional Information

• ​Barometer
  • A barometer is an instrument used to measure atmospheric pressure.
  • The barometer was invented by Torricelli.
• Hydrometer
  • A hydrometer is an instrument used to measure the specific gravity of liquids.
  • The hydrometer was invented by Nicholson.
• ​Anemometer
  • An anemometer is an instrument used to measure the velocity of wind and directions.
  • The anemometer was invented by Leon Alberti.

The correct answer is Canada.

Key Points

• The federal government system of India has been taken from the Canadian Constitution.

Additional Information

• Only the Parliament has the power to make laws on the subjects of the Union List.
• Article 245 to 255 of the Constitution discusses the Centre-State legislative relations in Part-XI.
• In the Constitution of India, three types of lists are present in the Seventh Schedule as the legislative powers between the Center and the States.
• The 'Union List' mentions important subjects, which include defence, communication, foreign policy, etc., and where only the laws of the Center are effective.