Question Discussion & Solution

In the mixed series, the letter added 2 and number added 12 we get-

 Hence, "76" is the correct answer.

The correct answer is the Graphical User Interface.

Important Points

• Graphical User Interface (GUI) 
  • The graphical user interface is used by most of the commercially popular computer operating systems.
  • A Graphical User Interface (GUI) allows you to enter commands by pointing and clicking at objects that appear on the screen.
  • It consists of picture-like items (eg. icons and arrows).
  • In most operating systems, the primary user interface is graphical.

Key Points

• Some popular, modern graphical user interface examples include:
  • Microsoft Windows,
  • macOS, Ubuntu Unity,
  • GNOME Shell for desktop environments, and
  • Android,
  • Apple's iOS,
  • BlackBerry OS,
  • Windows 10 Mobile,
  • Palm OS-WebOS, and
  • Firefox OS for smartphones.​

The Correct Answer is Option 1 i.e Baking powder.

• Baking powder:
  • Baking powder is a mixture of baking soda and tartaric acid .
  • Tartaric acid has been added to baking powder to neutralize the bitterness produced by sodium bicarbonate (NaHCO₃) .
• Baking soda:
  • It is commonly known as sodium bicarbonate.
  • Sodium bicarbonate is a white crystalline solid.
  • It is used in baking products like cakes, cookies etc.
• Washing Soda:
  • It is commonly known as Na2CO3 or sodium carbonate.
  • It is used in softening of hard water.
  • It is commonly used as a cleaning agent for domestic purposes.It is also used in the manufacturing of paper, soap, textiles, paints, etc.
• Vinegar:
  • Vinegar is produced from fermentation of alcohol.
  • Vinegar is the natural source for acetic acid.
  • It is widely used as a flavouring agent in most of the cuisines.

Encapsulation

• It is the process or method to contain the information.
• Wrapping of data and function into a single unit is called data encapsulation
• Encapsulation is a method to hide the data in a single entity or unit along with a method to protect information from outside.
• It can be implemented using by access modifier.  

Important Point:

• Data Abstraction is the method of hiding unwanted information.
• Polymorphism is a feature of OOPs that allows the object to behave differently in different conditions. 
• The objects that help to perform abstraction are encapsulated but the objects that result in encapsulation need not be abstracted.

The correct answer is Haribhau Upadhyay.

Key Points 

• Haribhau Upadhyay-
  • He was the Chief Minister of Ajmer State from 1952 to 1956.
  • He became the first dictator of Rajasthan for the Salt Satyagraha.
  • He violated the salt law in Ajmer during the Salt Satyagraha.
  • He was the editor general of some newspapers – Audumbar, Navjeevan, Tyag Bhoomi.
  • He also established Gandhi Ashram at Hatundi in Ajmer.

Additional Information 

• Mankiyalal Varma also known as Gandhi of Mewar, the book Present Governance of Mewar was written by him.
• Shobharam Kumawat was the first Prime Minister of Matsya Sangh, he was associated with Alwar Prajamandal.
• Jay Narayan Vyas is known as the folk hero of Rajasthan/Sher-e-Rajasthan/Masab.