Question Discussion & Solution

The correct answer is All of these

• An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs.
• The three most common operating systems for personal computers are Microsoft Windows, Mac OS X, and Linux.
• Modern operating systems use a graphical user interface(GUI).
• An Operating System (OS) is an interface between a computer user and computer hardware. An operating system is a software that performs all the basic tasks like file management, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives and printers.
• Some popular Operating Systems include Linux Operating System, Windows Operating System, VMS, OS/400, AIX, z/OS, etc.
• The following are some of the important functions of an operating system:
  • Memory Management
  • Processor Management
  • Device Management
  • File Management
  • Security
  • Control over system performance
  • Job accounting
  • Error detecting aids
  • Coordination between other software and users

The correct answer is Jaipur.

• Jaipur is known as the Panna City of Rajasthan.

Key Points 

• Emerald (Panna) is a gemstone.
  • It is a variety of beryl minerals.
  • It is also called Green Fire.
  • It is found in the following areas of Rajasthan-
    • Udaipur- Kalaguman, Gogunda, Tikki
    • Ajmer-  Rajgarh, Gudas, Bubani
      • Ajmer's Bubani to Rajsamand's Gamguda and Nathdwara area is known as Green Fire Belt, where the emerald is found.

Additional Information

• Panna Mandi Is also situated in Jaipur.

The correct answer is Hexadecimal.

Key Points

• The hexadecimal Number system Contains 16 digits.
• The base of this number system is 16.
• It comprises 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F.

Additional Information

• About Binary number system:
  • There are only 2 digits in the Binary system, which are 0 and 1.
  • The base of this number system is 2.
  • This number system is used by all digital computers to convert the data input from decimal to its binary equivalent.
• About Decimal number system:
  • It contains 10 digits.
  • It comprises 0,1,2,3,4,5,6,7,8,9.
  • The base of this number is 10.
• About Octal number system:
  • It contains 8 digits.
  • The base of this number is 8.

The correct answer is Concave lens.

Key Points

• To treat the eye disease known as myopia or nearsightedness we use the Concave Lens.
• A concave lens is a category of lens that deviates a straight light beam coming from the origin to a diminished, upright, virtual image.
• It can construct both real and virtual images.
• The convex lens is a lens that tends to meet at a point of rays of light that convey parallel to its principal axis which is comparatively thick across the middle and thin at the lower and upper edges.
• A convex lens is used in cameras, correction of Hyperopia, etc.
• Bifocal lenses hold two different prescriptions, an upper part to allow for distance vision and an additional power on the bottom part of the lens to help in close-up focus.
• A bifocal lens is used in people suffering from presbyopia, myopia, hyperopia, and astigmatism.
• The result is eyesight lucidity at both distance and near with one pair of glasses.
• A Compound lens is simple lenses made on a general axis usually in close proximity and often cemented with each other.

Additional Information

The correct answer is Badminton.

 Key Points

• Uber Cup, trophy representing the women's world championship in the sport of badminton.
• The cup was contributed by Mrs H.S. Uber, the former English champion, in 1956 for a series of women's international team competitions to be held every three years.

 Important Points

• The Thomas Cup, sometimes called the World Men's Team Championships, is an international badminton competition among teams representing member nations of the Badminton World Federation (BWF).
• Important Cricket Tournaments in India:  the Ranji Trophy, the Duleep Trophy, the Vijay Hazare Trophy, the Deodhar Trophy, the Irani Trophy and the NKP Salve Challenger Trophy.