Question Discussion & Solution

Malware Protection is not the main function of the operating system.

Important Points

• Malware Protection
  • Malware is any software intentionally designed to cause damage to a computer, server, client, or computer network.
  • A range of antivirus software, firewalls and other strategies are used to protect against the introduction of malware.

Key Points

• Operating system
  • An operating system is a large and complex system.
  • OS system components include:
    • File,
    • Process,
    • Memory,
    • I/O device management.

 Additional Information

• The process management component
  • The process management component is a procedure for managing the many processes that are running simultaneously on the operating system.
  • Every software application program has one or more processes when they are running.
  • For example, when we use a browser like Google Chrome, there is a process running for that browser program.
  • All these processes managed by process management. 
  • The process management uses memory allocated to them and shutting them down when needed.
• File management
  • File management in an operating system includes file creation and deletion.
  • Manipulating files and directories.
• Memory management
  • ​An Operating System performs the functions for Memory Management such as:
    • It helps to keep track of primary memory.
    • Determine what parts of it are in use by whom, what part is not in use.
• I/O device management
  • ​An Operating System performs the functions for I/O device management such as:
    • It offers buffer caching system
    • It provides general device driver code
    • It provides drivers for particular hardware devices.

Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency.

Key Points

• Valency is the no of electron that looses, shared or gain to achieve stability or we can say to complete it outer most shell. 
• If any element has valence electron (electrons present in outer most shell) less than 4
  • ​​Valency = no of valance electron (valence electron<4)
• If any element has valence electron ​more than 4
  • ​​Valency = 8 - no of valance electron (valence electron>4)

​For Lithium:

• Li(Z=3) Electronic configuration = 2, 1
  • Valency = no of valance electron  = 1

​Hence, we can conclude that 1 is the valency of Lithium.

According to the question, we have the following diagram,

Hence, Kritika is standing in the south-west direction with respect to her initial position.

The correct answer is Aravali Ranges.

• The oldest fold mountain ranges in the world is Aravali Ranges.

Key Points

• Aravalis are one of the world’s oldest fold mountains running in north-east to south-east direction from Delhi to Palampur in Gujarat. 
• It is an example of the relict mountain.
• Guru Shikhar is the highest peak of Aravali.
• The Aravalli Range dates back to times when the Indian Plate was separated from the Eurasian Plate by an ocean. 
• Three major rivers and their tributaries flow from the Aravalli, namely Banas, Sahibi and Luni.

Additional Information

• The Western Ghats are locally known by different names such as Sahyadri in Maharashtra, Nilgiri hills in Karnataka and Tamil Nadu and Annamalai hills, Cardamom hills in Kerala.
• The Himalayas are young fold mountains of the tertiary period, which were folded over the Tethys Sea due to inter-continental collision.
• They stretch from the Indus River in the West to the Brahmaputra River in the East.
• The Alps are the highest and most extensive mountain range system that lies entirely in Europe, and stretch approximately 1,200 km.

The correct answer is Ganga Singh.

Key Points

• Ganga Singh-
  • He was the younger brother of Dungar Singh.
  • He is known as Rajasthan's Bhagirath.
  • He took part in all three round table conferences.
  • He built Lalgarh palace in memory of his father Lal Singh.

Additional Information

• Rav Beeka-
  • He was the son of Rav Jodha.
  • Firstly, He established Kodamdesar as a capital.
  • He built the Bhairav temple in Kodamdesar.
  • He established Bikaner's Rathore dynasty.
  • He also established Bikaner city in 1488 AD.
  • He is also known as Jangaldhar Badshah. 
• Rai Singh-
  • He was the son of Rav Kalyanmal.
  • He went to Nagore Darbar in 1570 AD and became a member of the Royal army.
  • His daughter was married to Shajade Salim.
  • Akbar gave Rai title to him.
• Sardar Singh-
  • He was the only Rajasthani ruler who gave support to Britishers in 1857's revolt out of Rajasthan.
  • Britishers gave him 41 villages of Tibbi Pargana in reward for his service.
  • He was the first to prohibit Sati tradition in Bikaner.