Question Discussion & Solution

The correct answer is Output.

Key Points

• Output devices allow us to receive information from the computer.
• An output device is any hardware device used to send data from a computer to another device or user.
• Examples of output devices are-
  • monitors and projectors (video), headphones and speakers (audio), or printers and plotters (physical reproduction in the form of text or graphics).

The correct answer is option 2 i.e 19.

• Potassium is a member of the alkali group of the periodic table.
  • Symbol: K.
  • Atomic number: 19.
  • Belongs to group 1 in the periodic table.
  • First isolated in 1807 by Humphry Davy.
  • Sodium and Potassium are the elements known as soft metals(can cut with a knife with little force).
  • Potassium metal is kept in kerosene due to its high reactivity with water.
  • Potassium bicarbonate is the chemical used in fire extinguishers.
  • Potassium is the most common radioisotope in the human body.
  • Potassium is the second least dense metal after lithium.
• Atomic Number 17: Chlorine.
• Atomic Number 18: Argon.
• Atomic Number 20: Calcium.

The correct answer is Interconnection and networks.

Key Points

• Internet:
  • The term Internet is derived from the words interconnection and networks. Hence, Option 4 is correct.
  • The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices.
  • It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies.
  • The Internet carries a vast range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), electronic mail, telephony, and file sharing. 
  • The first web page address was http://info.cern.ch/hypertext/WWW/TheProject.html.
  • ARPANET adopted TCP/IP on January 1, 1983.
  • NCSA Mosaic ran on Windows computers was the first browser to surf the internet. 

Additional Information

• A computer network is mainly of four types:
  • LAN(Local Area Network)
  • PAN(Personal Area Network)
  • MAN(Metropolitan Area Network)
  • WAN(Wide Area Network) 

The correct answer is Udaipur.

• Sorghum research centre has been established in Vallabhnagar Udaipur in Rajasthan.

Key Points

• Sorghum/Jowar is used as food grains.
• The highest Jowar production in the country is in Maharashtra.
• Whereas Rajasthan holds the fourth position in the country.
• Rajasthan has the highest production of Jowar in the central part.
• While Ajmer district ranks fifth in Jowar production.

Additional Information

• The major variety of Jowar in the state is PV-96.
  • Maximum Producing District - Nagaur, Ajmer, Pali.
  • Climate - Warm temperature is required.
  • Rainfall - 35 -150cm
• Alcohol and Beer are made from Sorghum.

According to the question,

Here, each alphabet is coded as the alphabet which is at the same position in reverse alphabetical order.

Similarly,

Hence, “SLOW” can be coded as “HOLD”.