RBSE Solutions Class 8 Science Chapter 13 Information Technology

Information Technology Textbook Questions Solved

I. Multiple Choice Questions

Question 1.
1. In which year the radio broadcasting had started in India?
(a) In 1926 A.D
(b) In 1927 A.D
(c) In 1928 A.D
(d) In 1925 A.D
Answer: (b) In 1927 A.D
In simple words: Radio broadcasting started in India in 1927. This was an important step for sharing news and music.

🎯 Exam Tip: Focus on specific dates for historical events in IT to ensure accuracy.

2. At which place our countries first telephone exchange was established?
(a) In Delhi
(b) In Mumbai
(c) In Pune
(d) In Bangalore
Answer: (b) In Mumbai
In simple words: The first telephone exchange in India was in Mumbai. This let people make phone calls for the first time.

🎯 Exam Tip: Remember key cities for technological firsts in India.

3. The part of Telephone instrument which is placed in front of mouth and collect sound and propagates the information in the form of electromagnetic waves is called
(a) mouth piece
(b) receiver
(c) cable wire
(d) None of the options
Answer: (a) mouth piece
In simple words: The mouthpiece is the part of the phone you talk into. It takes your voice and changes it into signals that can travel.

🎯 Exam Tip: Understand the basic components of communication devices and their functions.

Fill In The Blanks

Question 2.
1. The device based on information technology which send the graphs, charts, etc. through telephone network from one location to another location is called........................
Answer: Fax
In simple words: A Fax machine is a device that sends pictures, graphs, and text over phone lines to another place. It's like sending a copy of a paper through the phone.

🎯 Exam Tip: Remember that a fax machine converts documents into signals for transmission over phone networks.

Information Technology Short Answer Type Questions

Question 1. Define the information technology.
Answer: Information technology (IT) is a field of technology where computers are used to send and receive information across telecommunication networks. It helps us manage and share data over long distances quickly.
In simple words: Information technology is about using computers and phone lines to send and get information. It helps people share facts and data.

🎯 Exam Tip: For definitions, always include the core components (computers, telecommunication) and purpose (sending/receiving information).

Question 2. Tell any three names of telecommunication medium of information technology based on internet.
Answer:
1. Telephone
2. Television
3. Computer
Three examples of telecommunication methods that use information technology and are based on the internet are telephone, television, and computer networks. These systems allow people to communicate and share information over distances.
In simple words: Three ways we communicate using internet technology are telephones, televisions, and computers. They help us talk and share things from far away.

🎯 Exam Tip: Focus on devices and systems that enable communication over distances using modern technology.

Information Technology Long Answer Type Questions

Question 1. What do you mean by word television? Explain the working system of television. Write the names of latest technology and advanced Quality television of present era.
Answer: Television is a communication tool that brings us both moving pictures and sound. It allows us to watch live events from around the world. John Logie Baird showed the first successful television program in Britain on January 26, 1926. In India, the first television service began on September 15, 1959, in Delhi. This technology has greatly reduced distances, allowing people to experience global events as they happen. Television programs are sent from a central place by changing pictures and sound into radio magnetic waves. A television antenna then catches these waves, and the TV turns them back into pictures and sounds for us to see and hear.
The television system works using several key parts like the tuner, amplifier, detector, power supply, picture tube (screen), and loudspeaker. The screen, which is the picture tube, has about two hundred thousand tiny points made of light-sensitive materials. Color television cameras use three electron tubes with special mirrors to split incoming light into three different color parts. You can control a TV either by hand or with a remote. A remote control is a small box with buttons that sends out invisible signals, which the TV then picks up to change channels or volume.
Today, very modern televisions like Flat TVs, LCD TVs (Liquid Crystal Display TVs), LED TVs (Light Emitting Diode TVs), and curved TVs are widely used. Advanced ways of broadcasting, such as cable TV and DTH (Direct to Home) services, are very popular. DTH television broadcasts many channels using advanced technology. With a small dish antenna (typically 50 to 75 cm), you can watch programs directly at home via satellite without needing a cable operator.
In simple words: Television shows us moving pictures and sounds. It works by sending signals through radio waves, which an antenna catches and your TV turns into images and sound. Newer TVs are flat, LCD, LED, or curved. DTH and cable TV are popular ways to watch many channels directly at home using a dish or cables.

🎯 Exam Tip: For explaining television, include its definition, how it works (components), and types of modern TVs. Specific dates and names like John Logie Baird add value.

Question 2. What is internet? Write the main names of communication means based on internet and describe any two in detail.
Answer: The Internet is a global network for communication that connects computers worldwide, usually through telephone lines. It allows information to travel instantly from one place to another. The word 'Internet' comes from 'International Network,' meaning a worldwide system. It's largely a wireless system that connects us all. This vast connection has revolutionized how people access information and interact daily.
Major services based on the Internet include E-commerce, Tele-Communication (like Telemedicine), and Broadband.
- **E-commerce:** This turns the entire world into a global marketplace, allowing people to buy everything from small to large items online. You can visit any e-commerce website, place an order, and receive your desired product. Credit cards are often used for online purchases, and companies use advertisements to inform customers about products. E-commerce is crucial for business activities today.
- **Tele-Communication / Telemedicine:** This uses information technology to help people in health and communication. For example, doctors and patients can see and talk to each other remotely. Doctors can also review medical images like ECGs, X-Rays, CT scans, and MRIs by opening computer video files.
- **Broadband:** This is a modern method for broadcasting information where many channels can be sent at the same time through just one cable or wire. It provides high-speed internet access for various uses.
In simple words: The Internet connects computers all over the world, letting us share information fast. It's like a giant global network. Important ways we use the internet are for online shopping (e-commerce), talking to doctors from far away (telemedicine), and fast internet (broadband) that sends many channels through one wire.

🎯 Exam Tip: When defining the Internet, mention its global nature and instant information sharing. For services, clearly name each one and give a simple explanation of what it does.

Question 3. Describe the utility of information technology. Make a list of possible cyber crimes by taking into consideration of human future and tell its safety measures.
Answer: Information technology (IT) offers great benefits to society. It provides hope for a corruption-free society by computerizing systems like the Public Distribution System (PDS) and making supply-related information available online. IT thus acts as a powerful tool for good governance and efficient public service delivery.
1. By computerizing public offices and using networks, proper improvements can be made.
2. The Right to Information should be used to make systems clear and open. For this computerised information system, Intranet, Internet and Extranet should be used to exchange information at a faster rate.
3. Introduction of Information technology in Banking system has brought a drastic change in consumer services. Beside it has controlled scams and corruptions.
4. It has made Public related offices like Income Tax, customs and excise, water, electricity, city corporation driving license, ration etc. paperless. These system have become transparent and less expensive.
**Cyber Security:** Cyber Security is essential for protecting information technology. It helps manage and prevent unauthorized access to sensitive government programs. Since governments, businesses, financial groups, hospitals, and other important organizations collect and share large amounts of data, ensuring the safety of this data is vital for public and national security. In the digital age, cyber security is extremely important, and special software and technology are used to keep all these activities safe.
In simple words: Information technology helps make society better by stopping corruption, making government offices work faster and without paper, and improving banking. For safety, 'Cyber Security' is very important. It stops unauthorized people from getting into secret government and company information. It keeps our data safe online.

🎯 Exam Tip: For questions on IT utility, provide specific examples of improvements in public services. When discussing cyber security, explain its role in protecting sensitive information from unauthorized access.

Question 1. Twitter is a
(a) Satellite
(b) Telemedicine
(c) Social media
(d) None of the options
Answer: (c) Social media
In simple words: Twitter is a social media site. People use it to share quick messages and connect with friends.

🎯 Exam Tip: Keep up-to-date with common examples of modern communication technologies.

Question 2. Which is not the category of E- Commerce
(a) B2C
(b) C2C
(c) B2B
(d) C2E
Answer: (d) C2E
In simple words: C2E is not a type of e-commerce. E-commerce is usually about businesses selling to customers, customers selling to other customers, or businesses selling to other businesses.

🎯 Exam Tip: Remember the primary models of e-commerce: B2C, C2C, and B2B.

Question 3. Akashwani is another name of
(a) All India Radio
(b) Internet
(c) T.V Station
(d) Satellite Communication
Answer: (a) All India Radio
In simple words: Akashwani is another name for All India Radio. It is the main radio service in India that broadcasts many programs.

🎯 Exam Tip: General knowledge about national institutions like Akashwani can be important for questions on communication in India.

Question 4. GSM, CDMA, D-AMP3S and PDCS are types of
(a) T.V
(b) Mobile phones
(c) Internet
(d) Radios
Answer: (b) Mobile phones
In simple words: GSM, CDMA, and others are types of technologies used in mobile phones. They help your phone connect to networks and work.

🎯 Exam Tip: Recognize common abbreviations and technologies related to mobile communication.

Question 5. In which year All India Radio was renamed as Akashwani
(a) 1937
(b) 1947
(c) 1957
(d) 1967
Answer: (c) 1957
In simple words: All India Radio got its new name, Akashwani, in the year 1957. It means 'voice from the sky'.

🎯 Exam Tip: Be aware of important historical dates related to India's public broadcasting services.

Question 7. In which year Fax system was invented by Scottish Alexander bell
(a) 1743
(b) 1943
(c) 1643
(d) 1843
Answer: (d) 1843
In simple words: The fax system's idea came from a Scottish inventor named Alexander Bain in 1843. He made a machine that could send written things far away.

🎯 Exam Tip: Pay attention to key inventors and their contributions to communication technology.

Question 8. In how many parts radio wave frequency is divided
(a) 2
(b) 3
(c) 4
(d) 5
Answer: (b) 3
In simple words: Radio waves are split into three main kinds: medium, short, and ultra-short waves. Each kind helps send different radio signals.

🎯 Exam Tip: Understand the basic categories of radio waves as they relate to broadcasting and communication.

Question 9. Modem communication medium is
(a) Pigeon
(b) Trumpet
(c) Drum
(d) Internet
Answer: (d) Internet
In simple words: The Internet is a very important way we communicate today. It helps us send messages and get information quickly all over the world.

🎯 Exam Tip: Differentiate between traditional and modern communication methods, highlighting the efficiency of newer technologies.

Question 10. E-Commerce is related to
(a) EFT
(b) EDI
(c) E-mail
(d) All the options
Answer: (d) All the options
In simple words: E-commerce uses many electronic tools like EFT for money, EDI for business papers, and email for talking. All these parts work together to help businesses online.

🎯 Exam Tip: Remember that e-commerce involves a combination of various electronic systems for transactions, data exchange, and communication.

II. Write True Or False Against Each Question

Question 1. Telemedicine is basically a health service providing system. (True/False)
Answer: (T)
In simple words: Telemedicine is a way to get health help using technology from far away. So, it's True.

🎯 Exam Tip: Define telemedicine by its core function: remote healthcare delivery using technology.

Question 2. Whatsapp, Hike etc are mobile social media applications. (True/False)
Answer: (T)
In simple words: WhatsApp and Hike are apps for social media on phones. This statement is True.

🎯 Exam Tip: Identify popular mobile applications as examples of social media and communication tools.

Question 3. E-Mitra Services is the ambition of Gujarat Government. (True/False)
Answer: (F)
In simple words: E-Mitra services belong to the Rajasthan government, not Gujarat. So, the statement is False.

🎯 Exam Tip: Distinguish between government initiatives and the specific states they operate in.

Question 4. Coloured television camera has four electron types. (True/False)
Answer: (F)
In simple words: Color TV cameras use three electron tubes, not four. So, this is False.

🎯 Exam Tip: Remember the basic components of color television cameras and their number of electron tubes.

Question 5. In India, T.V. Service was started on 15th September 1959 in Delhi. (True/False)
Answer: (T)
In simple words: TV service in India started in Delhi on September 15, 1959. This is True.

🎯 Exam Tip: Key historical dates and locations for major technological advancements in India are often tested.

Question 6. Electronic exchange was established in the year 1960. (True/False)
Answer: (T)
In simple words: Electronic exchanges were set up in 1960. This statement is True.

🎯 Exam Tip: Know the approximate timeframes for major shifts in communication infrastructure, like the advent of electronic exchanges.

Question 7. Radio transmission waves are divided in three types, medium wave, short wave and ultra short wave. (True/False)
Answer: (T)
In simple words: Radio waves are split into three kinds: medium, short, and ultra-short waves. This is True.

🎯 Exam Tip: Be familiar with the different types of radio waves and their broad classifications.

Question 8. The word fax is originated from English word fascimile. (True/False)
Answer: (T)
In simple words: The word 'fax' comes from the English word 'facsimile'. This statement is True.

🎯 Exam Tip: Understand the etymology of common technical terms, as it often provides insight into their function.

Question 9. A modern technique of transmitting many channels through single cable called broadband. (True/False)
Answer: (T)
In simple words: Broadband is a new way to send many channels through one cable. This is True.

🎯 Exam Tip: Define broadband by its ability to transmit multiple signals simultaneously through a single medium.

Question 10. Cyber security is also known as information technology. (True/False)
Answer: (F)
In simple words: Cyber security is about keeping information technology safe, not another name for IT. This is False.

🎯 Exam Tip: Clearly differentiate between Information Technology (the broader field) and Cyber Security (a specialized area within it focused on protection).

Information Technology Very Short Answer Type Questions

Question 2. What is broadband?
Answer: Broadband is a modern method used to send information where many different channels can be transmitted at the same time through one cable or wire. This technology provides high-speed data transfer for internet and other services.
In simple words: Broadband is a new way to send lots of information and many channels at once using just one cable. It gives you fast internet.

🎯 Exam Tip: For definitions, ensure key characteristics like "many channels," "simultaneously," and "single cable/wire" are included.

Question 3. Write the full form of STD.
Answer: The full form of STD is Subscriber Trunk Dialing. This system allows telephone subscribers to make long-distance calls directly without the help of an operator.
In simple words: STD means Subscriber Trunk Dialing. It's how people make long-distance calls themselves.

🎯 Exam Tip: Remember the full forms of common communication-related acronyms.

Question 4. Name the types of phones used nowadays.
Answer: In today's daily life, three main types of phones are commonly used: photo phones, cordless phones, and cellular phones. Photo phones can refer to devices with cameras or visual capabilities, cordless phones offer mobility within a limited range, and cellular phones (mobiles) provide wide-area communication.
In simple words: Today, we mostly use three types of phones: photo phones, cordless phones (without a wire), and cellular phones (mobile phones).

🎯 Exam Tip: List the various categories of phones based on their features and how they are used for communication.

Question 5. From where is the word fax derived?
Answer: The word 'fax' comes from the English word 'facsimile.' The term 'facsimile' itself is derived from Latin, where 'fas' translates to 'to make,' and 'simile' means 'similar to.' This combination accurately describes its function of making a copy.
In simple words: The word 'fax' comes from the English word 'facsimile'. This Latin word means 'to make something similar,' like making a copy.

🎯 Exam Tip: Knowing the origin of technical terms can help in understanding their meaning and function.

Question 6. Write atleast three names of main social media sites?
Answer: At least three major social media platforms commonly used today include Facebook, Twitter (now X), Blogger, and Tumblr. These sites allow people to connect, share content, and express themselves online.
In simple words: Three big social media sites are Facebook, Twitter, Blogger, and Tumblr. People use them to talk and share things online.

🎯 Exam Tip: Provide relevant and current examples of popular social media platforms.

Question 7. What do you mean by satellite phone?
Answer: A satellite phone is a type of mobile phone that connects to orbiting satellites instead of terrestrial cell towers. This allows it to be used for communication in remote areas where regular mobile networks are unavailable, providing global coverage. It is especially useful in situations where traditional communication infrastructure is lacking or has failed.
In simple words: A satellite phone connects to satellites in space, not phone towers on land. This means it works in places where normal mobile phones don't, like very remote areas.

🎯 Exam Tip: Differentiate satellite phones from regular mobile phones by their reliance on satellite networks for global coverage.

Question 8. What do you mean by telemedicine?
Answer: Telemedicine is a healthcare system that uses telecommunication and information technology to provide medical services to patients who are located far away. Through this system, doctors can examine and treat patients remotely, viewing medical images like ECGs, X-rays, and CT scans through computer files, and communicating directly with patients.
In simple words: Telemedicine is a way for doctors to help patients who are far away, using phones and computers. Doctors can talk to patients and look at their medical scans online.

🎯 Exam Tip: When defining telemedicine, emphasize its core function of remote healthcare delivery and the technologies used for communication and diagnosis.

Question 9. By using information technology how can we remove corruption from the society? Give three reason.
Answer: Information technology (IT) can play a significant role in reducing corruption in society by:
1. Computerizing the Public Distribution System (PDS) and publishing all supply and distribution information online for public access.
2. Implementing computerization and networking in public dealing offices, which helps streamline processes and reduce human intervention.
3. Improving transparency in work culture, as the government has agreed to share information with citizens under the Right to Information, promoting openness.
In simple words: We can fight corruption with information technology by: 1. Putting all public food distribution details online. 2. Making government offices use computers and networks to work better. 3. Making sure the government shares information with everyone, so things are clear.

🎯 Exam Tip: For questions on IT's role in governance, provide specific examples like transparency, computerization of public services, and data sharing.

Question 10. Which information technology based mediums of communication are used in today's time?
Answer: In the 21st century, several information technology-based communication mediums are commonly used. These include the telephone for voice calls, radio for audio broadcasts, fax for transmitting documents, e-mail for digital messaging, television for visual and audio programming, and the internet for a wide range of global communication services.
In simple words: Today, we use many IT-based ways to communicate: phone, radio, fax, email, television, and the internet. These help us talk, listen, watch, and share information.

🎯 Exam Tip: List and briefly explain various modern communication mediums, highlighting how each uses information technology.

Information Technology Short Answer Type Questions

Question 1. Write atleast three uses of Fax machine?
Answer: A fax machine has several uses, especially for sending documents quickly. Three main uses include:
1. **Sending urgent documents:** It can transmit copies of important papers, like legal documents or contracts, over telephone lines instantly.
2. **Confirmation of delivery:** Many businesses use faxes to send purchase orders or invoices and get a quick confirmation that the document was received.
3. **Cross-border communication:** It allows for easy and reliable exchange of documents between offices or individuals in different geographical locations.
In simple words: A fax machine is used to: 1. Send copies of important papers fast. 2. Get quick proof that a document was received. 3. Send documents to people in other cities or countries easily.

🎯 Exam Tip: Focus on the primary function of a fax machine: quick and verifiable transmission of document copies.

Question 2. What is DTH service? Explain.
Answer: DTH (Direct-to-Home) is a broadcasting service that delivers television programs directly to homes without needing a cable operator. A small dish antenna is installed at the user's home, which receives signals directly from a satellite. DTH transmission employs advanced technology to provide numerous multichannel programs, typically using a dish antenna between 50 to 70 cm in diameter. This allows for clear reception and a wide variety of content.
In simple words: DTH is a TV service that sends programs straight to your home from a satellite. You use a small dish antenna to catch the signals. It means you don't need a cable operator and can watch many channels clearly.

🎯 Exam Tip: Define DTH by its direct satellite reception and its independence from cable operators. Mention the dish antenna.

Question 3. What is' E-mitra? Which State Government has launch E-mitra? What is the usefulness of E-mitra service?
Answer: E-Mitra is an internet-based service launched by the Rajasthan government. It is available across all 33 districts of Rajasthan, with online access in rural areas through Common Service Centre (CSC) Kiosks and in urban areas via E-Mitra Kiosks. This service allows citizens to pay utility bills (like electricity, water, and telephone bills) and obtain various certificates, such as bonafide certificates, ration cards, and driving licenses, making public services more accessible.
In simple words: E-Mitra is an online service from the Rajasthan government. It helps people in both villages and cities pay bills for electricity, water, and phone, and also get important documents like certificates or driving licenses.

🎯 Exam Tip: When explaining government e-services, mention the state, purpose (what services are offered), and accessibility (rural/urban, kiosks).

Question 4. What was the mode of communication hundred years ago?
Answer: A hundred years ago, common communication methods included using bugles or dhols (drums) to convey messages. For secret communications, many Maharajas employed pigeons or horse riders. In parts of Europe, torch telegraphs were also used for sending messages over distances.
In simple words: A century ago, people used bugles or drums to talk. For secret messages, kings used pigeons or horse riders. In Europe, they also used torch telegraphs.

🎯 Exam Tip: Provide diverse examples of historical communication methods, categorizing them by purpose (general vs. secret messages).