Class-5th Computer Generations of computer

 Class-5th Computer for VGS

  Important Full forms 

1.    CPU :-    Central Processing Unit 

2.    CD:-    Compact Disc

3.    RAM:-     Random Access Memory 

4.    ROM :-    Read Only Memory 

5.    HDD:-      Hard Disk Drive 

6.    KB:-        Kilobytes 

7.    MB:-       Megabyte

8.    GB:-        Gigabyte

9.    USB:-      Universal Serial Bus

10.   OS:-        Operating System

11.    URL:-     Uniform Resource Locator

12.    UPS:-      Uninterruptible Power Supply

13.   HTTP:-    HyperText Transfer Protocol

14.   HTML:-    HyperText Markup Language

15.     ISP:-    Internet Service Provider

16.    DVD:-    Digital Versatile Disc

17.     PC:-        Personal Computer

18.     DOS:-     Disk Operating System

19.     MS:-        Microsoft

20.     GUI:-    Graphical User Interface

Shortcut keys

1.     Ctrl + Shift + N:-    Create New Folder

2.     Ctrl + C:-    Copy any text or item

3.     Ctrl + X:-    Cut selected text or item

4.     Ctrl + V:-    Paste copied text or item

5.     Ctrl + Z:-    Undo previous action

6.     Ctrl + A:-    Select all text or items

7.     Ctrl + F:-    Find specific word

8.     Ctrl + S:-    Save document or file

9.     Ctrl + N:- Open a new page

10.     Ctrl + O:- Open existing document or file

11.     Ctrl + P:- Print current file

12.     Windows key + L:- Lock the computer

13.   Windows Key +D :-    Show or hide desktop

14.    F1 :-    Open help window

15.    F5 :-    Refresh current page

Basic questions and answers related to computer 

Q.1    Who is the father of computer ?

Ans:-    Charles Babbage 

Q.2    What is computer ?

Ans:-    Computer is an electronic device that transform data into meaningful information.

Q.3    What is smallest unit of data in computer ? 

Ans:-    Bit is the smallest unit of data in computer

Chapter -1     Generation of computer 

A.     Key Vocabulary

1. Punched card → A card with holes punched in it to represent data for computers.  

2. Algorithm → Set of clear steps to perform a task just like a recipe of a food item.  

3. Mainframe → lesser powerful than a supercomputer used a server in large enterprises.  

4. Internet of thing → IoT - technology to connect devices over the internet.

B.    Answer the following question

Q.1     What is an abacus and how is it used?

Ans:-   The abacus is an ancient manual calculating frame with movable beads on rods use for basic arithmetic operations  

Q.2     What are the supercomputer and what are they used for?

Ans:-    Supercomputers are the fastest most powerful computers. They solve big tasks like weather report, space study and science work  

Q.3     Write any 4 limitations of computers.

Ans:-    1. Computers have no brain of their own.  

2.     They lack common sense.  

3.     They show no feelings.  

4.     They need power and human help to work.  

Q.4     Write any 4 characteristic of computers.

Ans:-     1. Computer works very fast  

2. They give correct result.  

3. They store lots of data.  

4. They can do many types of job.  

Q.5     Write any 2 features of the following generation of computer.

Ans:-  Generation 1: - i) Used vaccum tubes for circuitry  

    ii) Large in size.  

Generation 2 :-

i) Used transistor 

ii) Smaller, faster and more reliable  

Generation 3:-

i) Used Integrated circuits 

ii) High level language  

Generation 4:-

i) Development of personal computer and internet 

ii) Used microprocessor  

Generation 5:- 

i) Based on AI and parallel processing 

 ii) Used Advanced Language - Python and R

 

Class- 7th Chapter 10: Augmented Reality and Virtual Reality

 Chapter 10: Augmented Reality and Virtual Reality

 Exercises (Pgs. 176-178) 

A. Tick (✓) the correct answers. 

1. b 

2. b 

3. b 

4. c 

5. b 

B. Fill in the blanks. 

1. immersion 

2. Spectacles 

3. QR codes 

4. real 

5. navigation 

C. Write T for True and F for False. 

1. True

2. True

3. False

4. False

5. True

A.    Answer the following questions in Short . 

Q.1    What is Augmented Reality ? What is the main purpose of Augmented Reality in enhancing user Experiences ? 

Ans:-     Augmented reality (AR) overlays interactive digital images and information onto the real world, enhancing perception. Using smartphones or headsets, users can view virtual objects, like furniture, seamlessly integrated into physical surroundings in real time.

Q.2    Explain how virtual Reality works . What kind of equipment do you need to use it ? 

Ans:-    Virtual Reality works by creating a computer-generated 3D environment viewed through a VR headset. Sensors track head and hand movements, updating visuals instantly. Required equipment includes a VR headset, motion controllers, tracking sensors, and sometimes a powerful computer or gaming console.

Q.3    Different between AR and VR . 

Ans:-    Augmented Reality (AR): - Augmented Reality is a technology that overlays digital images, information, or objects onto the real-world environment, enhancing what users see and interact with without replacing the physical surroundings.

Virtual Reality (VR):- Virtual Reality is a technology that creates a fully computer-generated environment that completely replaces the real world, allowing users to experience and interact within a simulated digital space.

Q.4    Explain any three types of Augmented Reality  . 

Ans:-    Augmented Reality Type :

1. Marker-Based AR: Uses printed markers or images to trigger and display digital content.

2. Markerless AR: Uses GPS and sensors to place virtual objects without physical markers.

3. Projection-Based AR: Projects digital images onto real surfaces and allows interaction.

 Q.5    List three uses each of Augmented Reality and Virtual Reality . 

Ans:-   Uses of Augmented Reality (AR):- 

1. Virtual furniture placement in rooms before purchase.

2. Navigation with real-time directions overlay.

3. Interactive learning in education and training.

Uses of Virtual Reality (VR):- 

1. Immersive gaming experiences.

2. Virtual training for medical, military, or industrial purposes.

3. Virtual tourism and exploration of distant locations.

Class-8 Chapter 10: Google Drive

 Chapter 10: Google Drive 

Exercises (Pgs. 175-177) 

A. Tick (✓) the correct answers. 

1. a 

2. c 

3. b 

4. b 

5. b 

B. Fill in the blanks. 

1. Trash 

2. File 

3. Empty Trash 

4. Starred 

5. view, comment, or edit 

C. Write T for True and F for False. 

1. False

2. True

3. False

4. True

5. True

A. Answer the following questions in short.

Q.1    What is Google Photos ? 

Ans:-     Google Photos is a cloud service by Google that stores, backs up, organizes, and shares photos and videos, with easy access, search, and basic editing features.

Q.2    How much space does Google Drive offer us?

Ans :- Google Drive provides 15 gigabytes ( GB) of free storage space to save files and folders online. 

Q.3    How many file types does Google Drive support?

Ans:-    Google Drive supports over 100 files types, including documents , spreadsheets , presentations , images , videos and .zip files. 

Q. 4    Who developed Google Drive ? 

Ans:-     Google Drive was developed by Google in April 2012 as a cloud storage and file-sharing service.

B. Answer the following questions in long.

Q.1   What is Google Drive ?What are the benefits of using Google Drive for file storage and management ?  

 Ans:-    Google Drive is a cloud-based service that allows users to store, access, and manage files online. You can upload documents, images, and more to a secure platform that’s accessible from any device, including computers, smartphones, and tablets. The benefits of using

Google Drive for file storage and management are as follows 

• Offline Access:  

• File Sharing: 

• Save Links and Images Directly: 

• File Conversion:

• Search and Organise Files: 

• Drag-and-Drop Uploading: 

Q.2    How can starring ✬ files and folder in google Drive improve organisation and productivity ? 

Ans:-  Starring files and folders in Google Drive helps you quickly find and access important or frequently used items. Starred files can be easily accessed from the Starred section in the left navigation panel.   

Q.3    Describe the different access levels that can be granted when sharing a file on Google Drive . 

Ans:- Google Drive provides three main access levels when sharing a file.

Viewer – The user can only view or read the file. They cannot make any changes or add comments.

Commenter – The user can view the file and add comments or suggestions, but they cannot edit the content.

Editor – The user has full access to view, edit, and comment on the file.

These access levels help control how others interact with your shared files.

Q.4    Difference between Viewer and Editor access levels in Google Drive . 

Ans:-    Google Drive offers Viewer and Editor access. Viewer access allows users to only view or read the file without making changes or comments. Editor access allows users to view, edit, modify content, and add comments for full collaboration.

Q.5    How can you delete a file permanently in Google Drive ? 

Ans:- To delete a file or folder permanently in Google Drive, follow these steps:

1. Select the file or folder and click on the Remove button to move it to Trash.

2. In the left navigation pane, click on Trash to view the deleted files.

3. To permanently delete files, click on the Trash drop down button at the top and select Empty trash.

Class- 7th Chapter 9: Cloud Computing and IoT

 Chapter 9: Cloud Computing and IoT 

Checkpoint (Pg. 151) 

Write T for True and F for False. 

1. T 

2. F 

3. T 

Exercises (Pgs. 161-163) 

A. Tick (✓) the correct answers. 

1. b 

2. b 

3. b 

4. a 

5. b 

B. Fill in the blanks. 

1. local devices 

2. hybrid 

3. Cloud hosting 

4. Internet 

5. traffic management 

C. Write T for True and F for False. 

1. T 

2. F 

3. T 

4. F 

5. F

A. Answer the following questions.

Q.1    Describe how cloud hosting differs from traditional web hosting . 

Ans:-   Cloud Hosting :- Cloud hosting uses multiple virtual servers, offering scalable resources, high reliability, automatic backups, and pay-as-you-go pricing, efficiently handling traffic spikes with minimal downtime.

Traditional Web Hosting :-Relies on a single physical server with fixed resources, limited scalability, and higher downtime risk, usually at a fixed cost.

Q.2    Describe the differences between public and private clouds . 

Ans:-    Public Cloud:- Owned by third-party providers, public clouds offer scalable, flexible services accessible via the internet, often low-cost, ideal for individuals or small businesses, e.g., Google Drive.

Private Cloud :-    Dedicated to a single organization, private clouds provide enhanced security, control, and tailored infrastructure, hosted on-premises or by a third party, suitable for large organizations.

 Q.3    What challenges do organisations face when adopting cloud computing ? 

Ans:-  While cloud computing has many advantages, it also comes with some challenges and risks. Here are a

few of the main disadvantages:

• Reliance on Internet Connectivity  

 • Loss of Control  

• Security Concerns

 • Technical Issues 

• Limited Features

Q.4.    Describe three uses of IoT in everyday life . 

Ans:-   1. Smart Homes:-    IoT devices like smart lights, thermostats, and security cameras can be controlled remotely via smartphones.

2. Wearable Health Devices:- Smartwatches and fitness trackers monitor heart rate, steps, sleep patterns, and other health metrics, helping users track and improve their wellbeing.

3. Connected Vehicles:- IoT-enabled cars provide real-time navigation, traffic updates, vehicle diagnostics, and even autonomous driving features, enhancing safety and efficiency on the road. 

Q.5    Write three Key features of IoT  . 

Ans:-    Intelligence :- IoT devices can be smart ! They use algorithms and computing power to make decisions. 

Expressing :-    IoT allows devices to express themselves and interact with the world around them, making them more user friendly and efficient . 

Energy :-     IoT devices often need a lot of energy to operate . 

Class- 8th Chapter 9: OpenShot Video Editor

Chapter 9: OpenShot Video Editor

Checkpoint (Pg. 151)

Match the following.

1-a

2-b

3-c

4-d

Exercises (Pgs. 162-163)

A. Tick (✓) the correct answers.

1. c

2. b

3. a

4. a

5. a

B. Fill in the blanks.

1. Reverse Transition

2. Tracks

3. Preview

4. Razor

5. Ctrl+I

C. State True or False

1. False

2. False

3. True

4. True

5. True

D. Answer the following question 

Q.1    What is OpenShot ? Write down any six features of OpenShot  . 

Ans:-    Openshot Video Editor is a free open source video editing software available for Mac, Linux , and Windows .It allow users to easily create and edit videos and slideshows by combining audio , video clips , images and more into a single project . 

Features of OpenShot  :- 1.    It provides various video effects like brightness, contrast, and chroma key.

2.    It supports 3D animated titles (Blender integration).

3.    It has built-in title templates.

4.    It offers different transitions between clips. It supports keyframe animation.

5.    It includes basic audio editing features.

6.    It allows exporting videos in HD and 4K resolutions.

Q.2    What is the difference between importing and exporting ? 

Ans:- Importing: -Importing is the process of bringing media files such as videos, audio, and images from a computer or storage device into OpenShot so they can be used and edited in a project.

Exporting:- Exporting is the process of converting and saving the completed project into a final video file in a chosen format, resolution, and quality for sharing or distribution.

Q.3 Explain how to add text to a video using OpenShot . 

Ans:- In OpenShot Video Editor, text can be added to make a video more informative and attractive. Titles are placed at the beginning of a clip, captions are added within the clip, and credits are shown at the end.

To add text:

1. Click on Title in the Menu bar.

2. Select Title (or press Ctrl + T).

3. Choose a template.

4. Enter the text and click Save.

5. Drag the saved title from Project Files onto the timeline.

6. Preview using the Play button.

Q.4    What do you mean by visual effects ? 

Ans:- Visual effects add a special, attractive look to your project, making it more professional. Effects like blur, pixel, and wave are some examples.

Q.5    How can you apply a visual effect on a clip ? 

Ans:- To apply visual effects, follow these steps: 

1. Click on the Effects tab to view the available effects. 

2. Select the desired effect. 

3. Drag and drop the effect onto the clip.

 A small icon will appear above the clip where the effect is applied.

Class- 7th GK Unit- 8 ( Moral Values and Life skills)

 7th GK 

Unit- 8 ( Moral Values and Life skills) 

https://limewire.com/d/lJQF6#13iSKlAGZR

Topic :-  Awards and Honours

Q.1    Which is 2nd best UNESCO world heritage site rated by travellers around the globe?

Ans:-    TajMahal 

Q.2    Which Palestinian film won the Suvarna Chakoram recently?

Ans:-    Waqib     

Q.3       Which team won the ‘BBC (British Broadcasting Corporation)  Team of the Year’ Award in 2017?

Ans:-    England’s Women’s cricket team

Q.4    Who won the National Geographic Nature photographer of the Year title in 2017?

Ans:-    Jayaprakash Joghee Bojan

Q.5     Who topped the Forbes Top 100 Indian Celebrity List in 2017?

Ans:-    Salman Khan

Q.6    Which company was awarded India’s most trusted FMCG Brand according to The Brand Trust Report India Study, 2017?

Ans:-    Patanjali

Q.7    Which actress was awarded the Smita Patil Memorial Award in December 2017?

Ans:-    Rekha

Q.8    Which film won the award for the Best Gujarati Film at the 64th National Awards in 2017?

Ans:-    Wrongside Raju

Q.9    Who was awarded the Arjuna award for archery in 2017?

Ans:-    V.J. Surekha

Q.10     Which Indian translator was awarded the PEN Translates 2017 Grand award for Sangeeta Bandyopadhyay’s Bengali book, The Yogini?

Ans:-    Arunava Sinha

Q.11       Which actor bagged the Best Actor trophy at the Asia Pacific Screen Awards for his performance in the film, Newton?

Ans:-    Rajkumar Rao

Q.12     Which undergraduate team won the silver medal in International Genetically Engineered Machines (iGEM) held at Boston, USA?

Ans:-    IISER Pune

Q.13    Which film won the Golden Peacock award for best film at IFFI-2017?

Ans:-    120 Beats Per Minute, French Film

Q.14    Who was awarded Israel’s 2018 Genesis Prize?

Ans:-    Natalie Portman

Q.15    Who won the gold medal at the Innovation National Child Awards 2017?

Ans:-  Master Akash Manoj  

6th GK Unit- 8 ( Moral Values and Life skills)

 6th GK 

Unit- 8 ( Moral Values and Life skills) 

Topic :- Cutting Down on waste 

Q.1    Write 3 activity that is environmental friendly .

Ans:-    1. Utilise used glass jars to store eatables

    2.Carry your own bags when going out for shopping.

3.Repair and re-purpose used clothes 

Q.2    What is India's position among the countries that dump the most plastic waste into the world's oceans?

Ans:-    12th position out of 20 nations who dump the most plastic waste into the world's oceans. 

Topic :- Grow a Green Thumb 

Q.1    Which of these tool is not used required in the garden ? 

Ans:-     Colander 

Q.2    Where should we place our plants for maximum growth ? 

Ans:-     Decide depending on their need for light . 

Q.3    Which plants likes citronella? 

Ans:-    Plants like citronella, marigold and lavender have mosquito-repellent qualities . 

Topic :- Awards and Honours 

Q.1    Who received the IIFA Best Actor award in 2018 and for which movie?

Ans:-    Irrfan Khan ( Hindi Medium ) 

Q.2    Who won the UK's Mathematics Hall of Fame in 2018?

Ans:- Sohini Roy 

Q.3 Who won the Raj Kapoor Award for Excellence in Cinema, organised by Asian Centre for Entertainment Education (ACEE)?

Ans:-    Ramesh Sippy 

Q.4     Which company won the award for ‘Startup of the Year’ 2017 at the 7th Small Business Awards?

Ans:-    Milkbasket 

Q.5    Who was named the ‘EY Entrepreneur of the Year, 2017’?

Ans:-    Sanjiv Bajaj    

Q.6    Who is the only Indian American to feature in the Politico’s power list and has been ranked fifth on it?

Ans:-    Pramila Jayapal

Q.7     Which organisation won the Samudra Manthan award in 2017?

Ans:-    Jawaharlal Nehru Port Trust 

Q.8    Who won the Lifetime Achievement award by Nandi Fine Arts and KAPRI in 2017?

Ans:-    S.P. Balasubrahmanyam 

Q.9     Which famous cricketer was awarded the doctorate degree in Philosophy in 2017?

Ans:-    Yuvraj Singh 

Q.10    Who was awarded the Manush Sanman award for not honking in the past 18 years?

Ans:-    Kolkata based driver Dipak Das 

Class-8 Chapter 8 ( Iterative Statements in Python)

Chapter 8: Iterative Statements in Python

Exercises (Pgs. 143-145)

A. Tick (✓) the correct answers.

1. b

2. a

3. b

4. b

5. a

B. Fill in the blanks.

1. definite loop

2. 0

3. break

4. loop variable

5. while

C. Write T for True and F for False.

1. T

2. T

3. F

4. T

5. T

A.Answer the following questions. 

Q.1    What do you understand by Iterative statement ? 

Ans:-    Iterative statements in Python allow for repetitive execution of code until a specified condition is met . 

Q.2    Explain about "for loop" and  "while loop" in Python. 

Ans:- For Loop :- A for loop iterates through sequences like lists, strings, or ranges, executing code for each element automatically. It’s ideal when iteration count is predetermined or finite.

While Loop :- A while loop repeatedly executes code as long as its condition remains true. It requires manual updates to avoid infinite repetition, making it useful when iteration depends on dynamic conditions.

Q.3    Define List and Tuple.

Ans:-   List:- A list is an ordered collection of items that can be modified . Lists are represented using square brackets. 

Example:- Fruits= [ "Apple" , "Mango", "Banana" , "Grapes" ]

Tuple:- A tuple is an ordered collection of items that cannot be changed after creation . Tuple are written using round brackets . 

Example :- names= ("Apple" , "Mango", "Banana" , "Grapes")

Q.4   Describe the role of the range() function in python loops . How does it control the number of iterations in a for loop ? 

Ans:-    The range() function is commonly used in a for loop to execute a block of code a specific number of times. It generates a sequence of numbers starting from 0 by default, incrementing by 1 unless specified otherwise, and stopping just before the given endpoint.

Q.5   What is the purpose of the else block in a for loop , and under what conditions will it executed? 

Ans:-     In Python, the else keyword can be used with a for loop, but it works differently from how it is used in if statements. In a for loop, the else block is executed only if the loop completes normally, without encountering a break statement.

Q.6    What are infinite loops ? How can an infinite loop be useful in real world programming scenarios ?

Ans:-     An infinite loop occurs when a loop keeps running endlessly because the condition to stop the loop is never met. This can be useful in situations where you need a program to keep running, such as in a game, or monitoring systems, until a specific action occurs.

Activity Hub (Pgs. 145-146)

Give one-word answers for the following.

1. for

2. while

3. range()

4. tuple

5. loop variable

Class-7th Computer Chapter- 8 Robotics

 Chapter 8: Robotics

Checkpoint (Pg. 136)

Write T for True and F for False.

1. F

2. F

3. T

4. F

Exercises (Pgs. 144-146)

A. Tick (✓) the correct answers.

1. b

2. b

3. a

4. b

5. b

B. Fill in the blanks.

1. robotics

2. Sensors

3. Exoskeleton

4. Isaac Asimov

5. replace

C. Write T for True and F For False.

1. T

2. F

3. F

4. F

5. F

A.     Answer the following questions in short.

Q.1    What is robot ? 

Ans:-    A robot is a programmable machine designed to perform tasks automatically or with minimal human control. Robots can sense their environment, process information, and carry out actions, often used in industries, medicine, and daily life.

Q.2    Name three humanoid robot ? 

Ans:-  Sophia, Geminoid, and Atlas are examples of humanoid robots designed to resemble and interact like humans

Q.3    What is Elektro ? 

Ans:-    Elektro was the first speaking humanoid robot by Westinghouse Corporation in USA 

Q.4    Name India's first humanoid robot . 

Ans:-    India’s first robot is MANAV, a humanoid robot developed in India.

B. Answer the following question in long. 

Q.1    What is robotics ? Explain the significance of robotics in everyday life. 

Ans:-    Robotics is a field of technology that deals with creating and using robots. Robots are used in agriculture, environmental studies, and education to improve efficiency, collect data, reduce human effort, and help students learn coding and problem-solving in an interactive way.

Q.2    What are the key components of robots ? 

Ans:-    The key components of robots are:

1. Controller / CPU: The brain of the robot that processes information and sends commands.

2. Sensors: Detect changes in the environment (e.g., light, temperature, distance).

3. Actuators / Motors: Enable movement or action (wheels, arms, joints).

4. End Effectors: Tools or hands that interact with objects (grippers, welding tools).

5. Power Supply: Provides energy to operate the robot (batteries, electricity).

6. Software / Programming: Instructions that control the robot’s behavior and decision-making.

Q.3    Explain the three laws of Robotics formulated by Isaac Asimov. 

Ans:-    The Three Laws of Robotics were formulated by Isaac Asimov to ensure safe and ethical behavior of robots:

First Law:- A robot must not harm a human or, through inaction, allow a human to be harmed.

Second Law:- A robot must obey orders given by humans, unless such orders conflict with the First Law.

Third Law:- A robot must protect its own existence, as long as this does not conflict with the First or Second Law.

These laws priority to human safety first, then obedience, and finally self-preservation.

Q.4    State three advantages and disadvantages of robotics . 

Ans:-    Advantages of Robotics:

1. Increased Efficiency: Robots can work faster and continuously without fatigue.

2. Accuracy and Precision: Robots perform tasks with high consistency and minimal errors.

3. Safety: Robots can handle dangerous or hazardous tasks, protecting humans.

Disadvantages of Robotics:

1. High Cost: Designing, building, and maintaining robots is expensive.

2. Job Loss: Automation can reduce the need for human labor.

3. Limited Flexibility: Robots struggle with tasks requiring creativity or human judgement.

Activity Hub (Pg. 146)

Solve these riddles.

1. Drone

2. Robot

3. Humanoid Robot

Class- 8th GK Unit -8 and 9

Class- 8th 

Unit-8:-  Moral Values and Life skills 

Topic :-  Facts about Ayurveda 

Q.1    According to tradition , who is the God of Ayurveda ? 

Ans:-     God Dhanvantari  is known as God of Ayurveda . 

Q.2    According to Ayurveda , what element is the body made of ? 

Ans:-    Air , water , fire, earth and space  is the element of our body .

Q.3    What are the basis of Ayurvedic treatment ? 

Ans:-    Kapha , Pitta , Vata 

Q.4    What does the Sanskrit word 'Ayu' mean in Ayurveda ? 

Ans:-    The word 'Ayu' mean in Ayurveda is 'Life' .

Q.5    Which branch of Ayurveda deals with surgery ? 

Ans:-    Shalyaroga Chikitsa . 

Q.6    Ayurvedic treatments include all except. 

Ans:-    Ayurvedic treatments include everything except needles.

Unit - 9     Mind Games 

Topic:- What's The Relation ? 

Q.1    Deeepak is Ajay's brother. Ajay's chandan's son . Vijay is chandan's father . How is Ajay related to Vijay ? 

Ans:-     Grandson 

Q.2    Ravi's mother is the daughter of Mona's father. How is Mona's husband related to Ravi ? 

Ans:-    father

Q.3    Amit is Rakesh's brother. Atul's sister is Ritu , Ritu's son is Rakesh . How is Amit related to Ritu ? 

Ans:-    Son 

Q.4    A is B's sister . C is B's mother , D is C's father . E is D's mother . Then , how is A related to D ? 

Ans:-    Granddaughter 

Topic:- Fun with Riddles  

A.    Solve the given riddles. 

Q.1    You can hold it without using your hands or your arms . What is it ? 

Ans:-    Your breath 

Q.2    What building has the most stories  ? 

Ans:-    The Library 

Q.3    What can you keep even after giving it to someone ?

Ans:-    Your word 

Q.4    The more you take , the more you leave me behind . What am I ? 

Ans:-    Footsteps 

Q.5    Re-arrange the letters O U S W T D N E J R O to spell just one word . 

Ans:-    Just one word 

Q.6    Who has many keys but cannot open a single door ? 

Ans:-    A piano has many keys but cannot open a single door .

Topic :- Analogies 

A.    Fill in the blanks 

Q.1    Odometer is to mileage as compass is to ______________. 

Ans:- Direction 

Q.2    Window is to pane as book is to __________

Ans:-    Page 

Q.3    Yard is to inch as quart is to _______. 

Ans:-    Ounce 

Q.4    Reptile is to lizard as flower is to ____________

Ans:-    Daisy 

Q.5    Sponge is to porous ( झरझरा ) as rubber is to_________.

Ans:-    elastic 

Q.6    Pen is to peot as needle is to __________. 

Ans:-    Tailor 

Q.7   Who is known as inventor of equal to(=) sign ? 

Ans:- Robert Recorde invented the 'equal to' sign and was the first person to introduce algebra to Britain . 

Chapter 7( More on Python ) Class -7th

Chapter 7: More on Python

Exercises (Pgs. 127-129)

A. Tick (✓) the correct answers.

1. b

2. a

3. b

4. c

5. c

B. Fill in the blanks.

1. float( )

2. Boolean

3. True

4. precedence

5. equal

C. Write T for True and F for False.

1. T

2. F

3. T

4. F

5. T

D. Answer the following questions.

Q.1    What is the purpose of the input() function 

Ans:- The `input()` function in Python lets users enter data during program execution. It displays a prompt, waits for user input, and returns the entered value as a string, making programs interactive and dynamic.

Q.2    How can you convert a string input into an integer or float in python ?

Ans:-     In Python, you can convert a string input into an integer or float using the built-in functions int() and float().

You can use the int() function to convert a string that represents a whole number into an integer.

string_input = “123”

integer_value = int(string_input)

print(integer_value) # Output: 123

You can use the float() function to convert a string that represents a number with decimals into a float.

string_input = “123.45”

float_value = float(string_input)

print(float_value) # Output: 123.45

Q.3    What are operators in Python ? 

Ans:-   Operator in Python:

An operator is a symbol used to perform operations on values or variables.

Types of operators in Python:
There are 7 types of operators:

1. Arithmetic

2. Relational (Comparison)

3. Logical

4. Assignment

5. Bitwise

6. Membership

7. Identity

Q.4    Explain About  string in Python ? 

Ans:-    In Python, a string is a data type used to store a sequence of characters. Strings are written inside single quotes (' '), double quotes (" "), or triple quotes (''' ''' or """ """). They are immutable, meaning their values cannot be changed after creation.

Q.5   What is BODMAS and PEDMAS in Python ? 

Ans:-    BODMAS:- BODMAS rule explains the correct order of operations in mathematics: Brackets, Orders, Division, Multiplication, Addition, and Subtraction. Following this order from left to right ensures accurate calculations, prevents mistakes, and produces correct and consistent results in coding and mathematics.

PEDMAS :-    PEDMAS rule explains the order of operations in mathematics: Parentheses first, then Exponents, followed by Division and Multiplication, and finally Addition, ensuring expressions are evaluated correctly and consistently.