Question Discussion & Solution

The correct answer is Red.

Key Points

• Sulphuric acid is also known as oil of vitriol.
• It is composed of sulfur, hydrogen, and oxygen element.
• The acid has a very strong acidic nature.
• It has several uses such as fertilizer manufacture, mineral processing, oil refining, and wastewater processing.
• It is also known by the name hydrogen sulfate.

Important Points 

• The litmus solution is a purple dye solution.
• It is extracted from the plant called " Lichen".
• It is used as an acid-base indicator.

The correct answer is Chhattisgarh.

• Mahanadi river originates from the mountainous terrain of Chhattisgarh.

Key Points

• It originates from many mountain rivers with its origin water located in the Dhamtari district of Chhattisgarh.
• The river originates from an extension of the Eastern Ghats.
• It flows in Odisha where it joins the Bay of Bengal.
• Other names of Mahanadi are Kanaknandini, Chitrapalal, Mahasweta, Nilotpala etc.
• Hirakud Dam is built on the Mahanadi. It is the longest earthen dam in the world.​

Explanation:

BOSS (BHARAT OPERATING SYSTEM SOLUTIONS)

• National Resource Centre for Free/Open Source Software (NRCFOSS) of India developed a free and Open Source operating system called Bharat Operating System Solutions (BOSS).
• The latest variant of BOSS called GNU/Linux or simply BOSS Linux Version 5.0 is developed by C-DAC (Centre for Development of Advanced Computing).
• Linux Foundation has certified BOSS GNU/Linux for compliance with the Linux Standard Base standard.
• EduBOSS, another variant of BOSS GNU Did you know Linux, has educational applications for school students.
• The latest PC version learning packages that contain education of BOSS GNU/Linux is games, paint and graphic tools, typing tutor, available in eighteen and many other such tools.
• It also contains Indian languages. teaching tools for subjects like Math, Science, Social Studies among others.
• Another main component is the e-learning editor that enables teachers to develop and publish web-based learning and teaching materials and design online quizzes, tests, and self-evaluation procedures.

Important Points

•  The latest PC version of BOSS GNU/Linux is available in 18 Indian languages.

The correct answer is 1024 megabytes

The size of information in the computer is measured in Kilobytes (KB), Megabytes (MB), Gigabytes (GB), and Terabytes (TB).

• 1 Kilobyte (KB) = about 1 thousand bytes (or 1024 bytes to be precise)
• One Megabyte (MB) is about 1 million bytes (or about 1024 Kilobytes (KB)).
• One Gigabyte (GB) is about 1 billion bytes, or (1024 Megabytes MB).
• One Terabyte (TB) is about roughly 1 trillion bytes or 1024 gigabytes (GB).

A storage unit is used to store information and instructions when they are not being used in memory.

Three kinds of storage devices are a flash drive, hard disks, and CD - ROM drives.

Data access time is the time taken by a computer, or a data storage device or medium, to respond to a user's request for data.

Typical access times for a CD-ROM drive, 200 milliseconds; hard drive, 15 milliseconds; Random Access Memory (RAM), 70 nanoseconds.

There is a trade-off among the three key characteristics of memory: namely, capacity, access time, and cost. A variety of technologies are used to implement memory systems, and across this spectrum of technologies, the following relationships hold:

• Faster access time, greater cost per bit
• Greater capacity, smaller cost per bit
• Greater capacity, slower access time