Question Discussion & Solution

The correct answer is Monaco.

• As of June 2020, Monaco has the highest population density.

Key Points

• Monaco is the world’s second-smallest country.
• It has a population density of 26,150.3 residents per square kilometre.
• Monaco is famous for the Monte Carlo casino and for hosting the Monaco Grand Prix Formula One race.

Additional Information

• Population density is the total number of individuals present in per unit area.

Concept:

• Water Harvesting: Water harvesting is a practice to conserve water by collecting rainwater in an organized way.
  • The rainwater is not allowed to flow and get wasted but collected in tanks.
  • The main purpose however is not the collection but the enhancement of groundwater level.  
  • The collected water through tubes is made to recharge groundwater.
  • Maintenance of groundwater is long term sustainable structure for water conservation.

Here the logic is the methods which consumes water:

Explanation:

Kneading:

• Kneading is a process in the making of dough by mixing water and flour.
• Example: Kneading dough for roti. 
• Consumes water

Swimming also need water to do so.

Washing clothes is also a process that consumes.

While combing hair, no need of water.

• Becquerel is the SI unit of radioactivity.
• 1 Becquerel = 1 disintegration/Second
  • Disintegration: As the radioactive elements are unstable they will disintegrate at any moment by emitting alpha or beta particles and form new elements called daughter elements which are completely different in both physical and chemical properties when compared to the elements they came from.
  • The rate of disintegration does not depend upon external factors like temperature, pressure, etc.

The correct answer is Resolution.

• The number of horizontal and vertical pixels on a display screen is called Resolution.

​Key Points

• Resolution
  • ​ The number of horizontal and vertical pixels on a display screen is called Resolution.
  • The more pixels, the more information is visible without scrolling.
  • Screen resolutions have a pixel count such as 1600x1200, which means 1,600 horizontal pixels and 1,200 vertical pixels.
  • Screen resolutions also have base names, such as HDTV and Ultra UHD for TVs and XGA and WQXGA for computer monitors.  

Additional Information

• Dot Pitch 
  • ​Dot pitch is a measurement that defines the sharpness of a display.
  • It measures the distance between the dots used to display the image on the screen.
  • This distance is very small and is typically measured in fractions of millimetres.
• Aspect Ratio
  • ​Aspect ratio describes the ratio between the width and height of an image or screen.
  • The first number refers to the width, and the second number refers to the height.
  • A 1:1 aspect ratio, for example, is a square.

The correct answer is Tobacco.

• In 2019, the Medical and Health Department of the Government of Rajasthan was awarded by the World Health Organization for control over Tobacco.

Key Points

• The Medical & Health Department of Rajasthan launched various campaigns against tobacco consumption at places such as schools, colleges, police stations, and government offices during 2018-19.
• As part of the tobacco-free initiatives, 1.13 crore people took a pledge against tobacco consumption at the events held in 1.56 lakh government institutions on January 30 this year, marking Martyrs’ Day.
• The award was received by the  Medical & Health Department's Additional Chief Secretary, Rohit Kumar Singh on behalf of the government

Additional Information

• World Health Organisation:
  • Established in 1948
  • Headquarters: Geneva, Switzerland.