Question Discussion & Solution

Inheritance

The capability of a class to derive properties from another class is called Inheritance

• The class that inherits properties from another class is called Subclass or Derived Class.
• The class whose properties are inherited by a subclass is called Base Class or Superclass.

Syntax for Inheritance

class derived_name : access_mode base_class

{

//body of derived class

};

Additional Information 

Polymorphism

Polymorphism is mainly divided into two types:

• Compile-time Polymorphism
• Runtime Polymorphism

Compile-time polymorphism

This is achieved by function overloading or operator overloading.

• Function Overloading - When there are multiple functions with the same name but different parameters then these functions are said to be overloaded
• Operator overloading - When there are multiple operations can be performed by using single operator is called operator overloading for example operator ‘+’ when placed between integer operands, adds them and when placed between string operands, concatenates them

Run Time Polymorphism

It is achieved by Function Overriding.

Conclusion

Feature of Reusability is followed by inheritance so the correct answer is the inheritance.

Eureka:

• Constantan is a Nickel-Copper alloy also known as Eureka.
• It usually consists of 55% copper and 45% nickel.
• Its main feature is the low thermal variation of its resistivity, which is constant over a wide range of temperatures
• Constantan is a Nickel-Copper-based alloy wire that has a high resistivity and is mainly used for thermocouples and electrical resistance heating.
• It has a constant resistivity over a wide range of temperatures.
   

Composition:

• Ni = 45 %
• Cu = 55 %
   

Properties of Eureka:

• Resistivity - 490 µΩ -cm
• Melting point: 1300 ⁰C
• Specific gravity: 8.9 gm /cm³
• Negligible temperature Coefficient
• Easily ductile
• Resistant to atmospheric corrosion
• Can be easily soldered and moulded
   

Application:

• It is used for the measurement of temperature.
• It is used for the formation of thermocouple, along with the wires of other metals such as copper, iron, and chromium.
• It is especially used for resistance purposes since its resistance does not change much with the change in its temperature. It is used for DC current shunts. 

The correct answer is Viticulture.

• Cultivation of grapes called Viticulture.

Key Points

• Cultivation of grapes either for wine production or for raw consumption (table grapes) is called Viticulture.
• China is the leading producer of grapes.
• It accounts for 16.9% of global production.
• China is followed by Italy at 10.8%, and later by the United States at 8.7%.

Additional Information

• Horticulture is a type of agriculture in which fruits and vegetables are grown.
• The breeding, rearing, and transplantation of fish are called pisciculture.
• Sericulture is the production of raw silk by means of raising caterpillars.

​The correct answer is Jain temples.

• Mewa Nagar, a town in Barmer district of Rajasthan is famous for Jain temples.

​Key Points

• Mewa Nagar, Barmer district
  • The old name of this village was Veerampur and it is said that it was built in the 12th or 13th century. 
  • There are 3 Jain temples and a Vishnu temple here:
    • The largest and oldest temple here is of Nakoda Parshwanath. 
    • Other Jain temples are dedicated to Rishbhadeva and Shantinath. 

Additional Information

• Meva Nagar is built on a hillside. 
• This hill is known as the town's goats and it is located at a distance of 8 km from Balotar Nagar.
• There are many historical inscriptions here. 
• A fair is held here every year in the month of Pus.

The correct answer is Bhup Singh.

• Bhup Singh was the real name of freedom fighter Vijay Singh Pathik.

​Key Points

• Vijay Singh Pathik
  • ​Vijay Singh Pathik, popularly known as Rashtriya Pathik, was an Indian revolutionary.
  • His real name was Bhup Singh.
  • He was among the first Indian revolutionaries who lit the torch of the freedom movement against British rule.
  • Much before Mohandas K. Gandhi initiated the Satyagrah movement, Pathik experimented during the Bijolia’s Kisan agitation.

Additional Information

• Being Indian Revolutionary and Satyagrahi, he was also a very well known Hindi poet, writer and journalist.
• He was the editor of Rajasthan Kesari and Naveen Rajasthan.
• He also started his own independent Hindi weekly, the Rajasthan Sandesh and the Nav Sandesh from Ajmer.