Question Discussion & Solution

The correct answer is Silver.

Key Points

• Gold
  • It is one of the softest metals, and this quality makes it easier to design it in various jewelry designs.
  • It is tough making 24 karat gold jewelry. Other metals have to be added to it to increase its durability and strength.
  • If you wish to know what is 24 karat gold, you must understand that 24 karat gold is the purest form of this yellow metal.
  • Although 24 karat is pure gold, a jewelry piece made up of this purity is not solid and flexible enough.
  • When creating and crafting beautiful, intricately designed, and patterned gold jewelry, the metal needs to be added with other alloys to lend it the necessary strength.
  • The metals usually added to gold metal are zinc, nickel, silver, copper, etc. Hence, Option 3 is correct.
  • This is because when gold melts its state will change into a liquid.
  • Gold will like water so it flows and it will become difficult to mold.
  • So copper is added to gold which is there in the liquid state, so it will harden gold a little bit to prevent it from flowing which will be easy to mold gold to make ornaments.

Important Points

• Silver
  • It is a chemical element with the symbol Ag and atomic number 47.
  • A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal.

Additional Information

• Zinc
  • It is a chemical element with the symbol Zn and atomic number 30.
  • Zinc is a slightly brittle metal at room temperature and has a silvery-greyish appearance when oxidation is removed.
  • It is the first element in group 12 of the periodic table.
• Lead
  • It is a chemical element with the symbol Pb and atomic number 82.
  • It is a heavy metal that is denser than most common materials.
  • Lead is soft and malleable, and also has a relatively low melting point.
  • When freshly cut, lead is silvery with a hint of blue; it tarnishes to a dull gray color when exposed to air.
• Tin
  • It is a chemical element with the symbol Sn and the atomic number 50.
  • Tin is a silvery metal that characteristically has a faint yellow hue.
  • Tin is soft enough to be cut with little force.

Concept:

Pure virtual function:

• A pure virtual function is a virtual function that is required to be implemented by a derived class if derived class is not abstract.
• Base class containing pure virtual function becomes abstract.

Syntax of pure virtual function:

Virtual func_type func_name () = 0;

So option 4 is the correct answer.

The correct answer is Daulatmal Bhandari.

• Daulatmal Bhandari formed the 'Praja Mandal' in Jaipur.

Key Points

• Daulatmal Bhandari :
  • He was Chief Justice of Rajasthan High Court.
  • He was also a Member of the First Lok Sabha from 1952 to 1955
  • He formed the Azad Morcha in Jaipur and took satyagraha in 1942.
  • He also organized ‘Praja Mandal’ in Jaipur State.
  • Daulatmal Bhandari served as the Development and Agriculture Minister in Rajasthan state.

Additional Information

• Ram Kinkar was a member of the Uttar Pradesh Legislative Assembly.
• Vitthal Baburao Tupe was a Member of the Twelfth Lok Sabha.

The correct answer is Palash.

• Palash tree is called the Flame of the Forest in Rajasthan.

Key Points

• Flame of the Forest, also known as Palash Tree is a very beautiful Indian tree with bright crimson orange-colored flowers.
  • Flame of the Forest/Palash Tree is such a tree when it is in its fullest beauty, it can change the view of the entire forest in a very graceful way.
  • From the month of January to March, the tree stands in all its glory with a lot of orange and vermilion flowers that cover the entire crown.
  • Palash trees are distinct as they have more flowers than leaves. This is the state flower of Madhya Pradesh as well as Jharkhand. 
  • Flame of the Forest/ Palash Tree is a medium-sized tree of around 6-12m in height.

Important Points

• Mahua:
  • ​Mahua flowers have many medicinal properties and are also used to make pickles, jams, and now ice creams as well.
• Khejri:
  • ​Khejri is one of the most common tree species found in India (in the dry regions of Rajasthan, Delhi, Gujarat, Punjab, and Madhya Pradesh), Afghanistan, Iran, and Pakistan.
  • It plays a vital role in preserving the ecosystem of arid and semi-arid areas, mainly in the Thar Desert.​

Saw is used for cutting wood.

Similarly, Scythe is used for cutting Grass.