CBSE Class 7 Computer Science Worksheet

Read and download free pdf of CBSE Class 7 Computer Science Worksheet. Students and teachers of Class 7 Computer Science can get free printable Worksheets for Class 7 Computer Science All Chapters in PDF format prepared as per the latest syllabus and examination pattern in your schools. Class 7 students should practice questions and answers given here for Computer Science in Class 7 which will help them to improve your knowledge of all important chapters and its topics. Students should also download free pdf of Class 7 Computer Science Worksheets prepared by school teachers as per the latest NCERT, CBSE, KVS books and syllabus issued this academic year and solve important problems with solutions on daily basis to get more score in school exams and tests

Worksheet for Class 7 Computer Science All Chapters

Class 7 Computer Science students should refer to the following printable worksheet in Pdf for All Chapters in Class 7. This test paper with questions and answers for Class 7 will be very useful for exams and help you to score good marks

Class 7 Computer Science Worksheet for All Chapters

A. Application – based questions.
 
• Ritu is a student of class VII, Her geography teacher has asked her to prepare a chart on the population of four Metro cities of India. Suggest the chart type that suits her project.
Answer. Pie Chart
 
• Tripti has created a chart. She wants to improve the appearance of her chart by changing the background colour of its Plot area. Which option will you suggest her to do so ?
Answer. Format Plot Area 
 

B. Multiple-choice questions.
 
Question. Which feature is used to determine the input values needed to achieve a specific goal ?
Answer. (C) Goal Seek 

Question. What are the headings given to X-axis and Y-axis known as ?
Answer. (B) Axes Titles 

Question. Which chart type displays data in the form of a circle ?
Answer. (B) Pie 

Question. Which function key is used to insert a chart instantly in a worksheet ?
Answer. (C) F11 

Question. Which key is used to group multiple worksheets ?
Answer(A) Shift 

Question. The mini charts that fit into a single worksheet cell to provide the visual representation of the data are known as …………….
Answer. (C) Sparklines 
 

C. Answer the following questions.
 
Question. What is a Chart ?
Answer. Chart is an effective way to display data in a pictorial form. Charts make it easier to draw comparison and analyse the growth, relationship and trends among the values in a range. Charts provides more accurate analysis of information. 

Question. How is a Column chart different from a Bar chart ?
Answer. A Column chart displays the data in the form of vertical bars. It is used to show changes in data over a period of time, However, Bar chart helps to display the data in the form of bars horizontally or vertically. It displays comparison amongst the individual items. 

Question. What is the difference between Chart area and Plot area ?
Answer. The Chart area includes all the objects and elements in a chart. Plot area is a window within a Chart area. It contains the actual chart and includes the plotted data, data series, category and value axis. 

Question. What is the utility of grouping the worksheets of a workbook ?
Answer. Grouping worksheets facilitates in editing multiple worksheets at the same time. By grouping worksheets, you can enter common data, formatting effects, and formulas in the grouped sheets. 

Question. What is Data Consolidation?
Answer. Consolidation helps in combining the data of multiple worksheets.We can combine data of various ranges either in the same sheet or in different sheets
 

COMPUTER HARDWARE AND SOFTWARE

[A] ANSWER THE FOLLOWING QUESTION.

Question. Write a note on input and output devices of a computer system with suitable examples.
Answer.Input devices – Input devices help us to enter data into a computer . Keyboard and Mouse are the two most common input devices .
Output devices- Output devices help us to access the desired output and information .Monitor and Speakers are two most commonly used output devices.

Question. What is CPU ? Mention its units and explain their functions.
Answer. The CPU (Central Processing Unit ) is the process or brain of the computer . It makes calculations and processes data into information. The CPU controls all input and output devices and consists of 3 units-
(a) ALU- Arithmetic Logic Unit performs the tasks of arithmetical calculations and logical operations.
(b) CU- Control unit controls all operations of the computer.
(c) MU- Memory unit is used to receive hold and deliver data as per the instructions from the control unit.

Question. What are the two types of software of a computer system ?
Answer. Software is classified into 2 categories –
(a) SYSTEM SOFTWARE - This type of software performs the basic functions that are important to operate a computer system .The operating system is an example of system software.
(b) APPLICATION SOFTWARE- This consists of sets of programs that are used to do specialized tasks including payroll, inventory, spreadsheets, desktop publishing etc.

Question. Write a short note on data system of a computer.
Answer. In a computer database, the data is stored in form of bits and bytes.
BIT- A bit is the short form of Binary Digit (the digit 0 and 1)
BYTE- 8 bits together form a byte .
FIELD – A field refers to a collection of bytes that include a certain item of information about a thing .eg-name of a bank , its address etc.
RECORD – A record is a collection of related fields. Eg- a record about a student may include fields such as their name, address, aggregate marks , attendance etc.
FILE- File is a collection of records .eg- a collection of all records of students applying for a particular course, etc.
DATABASE- A database refers to the collection of all files in an organization . eg- files of clients, and staff of a bank make the bank’s database.

Question. Write down any three problems that you could face while working on a computer system and write down their solution also.
Answer. Three problems that we can face while working on system ,with their solutions are-
(a) Computer is not turning ON- Check all the power supply plugs . Keep the Monitor switch ON.
(b) Mouse /Keyboard is not working – Check to ensure that mouse/keyboard connections are properly attached .Check if the keyboard has got stuck.
(c) Keyboard is typing in Capital letters only – Check if the shift key has got stuck or the Caps Lock Key is on.

 

[B] SHORT ANSWER QUESTIONS-

Question. What is hardware?
Answer. Hardware comprises of physical units of a computer that can be seen and touched . Computer hardware consists of these units –
Input devices, Output devices, Processing devices ,Storage devices.

Question. What is a scanner ? Give some examples .
Answer. Scanner is used to scan images from photos , posters magazines ,etc directly in to the computer. Eg- Flatbled scanner and Handheld scanner .

Question. What is a drawing tablet?
Answer. Drawing Tablet is an input device which has a board and special pen to write over it and is connected to the computer.

Question. Define Software.
Answer. Software refers to a set of programs that control the computer hardware to make them operate.

Question. What is the full form of ASCII ?
Answer. ASCII Stands for American Standard Code for Information interchange .

Question. Give two examples of plotter.
Answer. Two example of plotter are – Drum plotter and Flatbed plotter.

Question. Name two types of computer memory .
Answer. The two types of computer memory are Primary memory and Secondary memory.

Question. How many bits make a byte?
Answer. 8 bits make a byte.

 

[C] FILL IN THE BLANKS

1- Storage device of computer is called computer memory storage .
2- Primary memory consists of RAM and ROM.
3- Secondary memory is a non volatile memory.
4- Data is stored in bits and bytes ,in a computer database.
5- A memory card stores pictures in a digital camera .
6- Speed of inkjet printer is measured in LPM .
7- Flatbed plotter is used to design cars, ships, airlines etc.

 
 
More Question..
 
1. Draw a well labeled diagram of synfig interface.

2. What is animation and name two animation tools.

3. Write the steps to animate an object in synfig studio.

4. Define different types of panels available in synfig studio.

5. Explain the term Transmission media? Explain different transmission media with suitable diagrams.

6. What is URL? Why is it useful?

7. What is server? Explain different functions of a server.

8. What are the different types of computer network?

9. What is Search Engine? Name atleast four search engines.

10. What is topology? Explain different topologies with suitable diagram.

Fill in the blanks :

Question. A _____ is an effective way to display data in pictorial form.

Answer : chart 

Question. _____ is a related of data values.

Answer : Data Series

Question. _____ is a key that is used to identify the colours , patterns, or symbols assigned to data series.

Answer : Legend 

Question. _____ is the vertical axis that is used to plot the values .

Answer : Value Axis

Question. The purpose of grouping worksheets is to enter common __________ 

Answer : data, formatting effects, and formulas

True or False :

Question. A chart is updated automatically with the change in data.

Answer : True

Question. We cannot modify the chart by changing its colours and patterns.

Answer : False

Question. X-axis is the horizontal axis.

Answer : True

Question. The Chart area contains the actual chart itself and includes data series,category, and value axis as well

Answer : False

Question. You can change the pattern of the data series using Fill option

Answer : True

Question. All the worksheets cannot be deleted in a workbook.

Answer : True

Very Short Answer Type Questions :

Question. What is the use of Libraries in Windows 7?
Answer : Libraries are user defined collections of content . It is a type of folder in windows 7 that is used to manage music, picture, documents etc.

Question. Write the steps to view the properties of files / folders .
Answer : Steps to view the properties of file/ folders -
1. Select a file or folder .
2. Click on Properties option in Organize menu . We can click properties from the properties from properties dialog box.

Question. What is CD-Burning ? Name three CD Burning software programs .
Answer : CD - burning is the process of copying files to CD or DVD .The three CD Burning software Programs are –
(a) Nero (b) Power 2 Go (c) Creator

Question. What is the use of Change Your View option in windows 7?
Answer : The Change Your View option in Menu Control bar has many options to view the files and folders and arrange them in different styles as per our choice.

Short Answer Type Questions :

Question. How can you copy data from pendrive to hard disk ? Give suitable tips .
Answer : Copy data from pen drive to hard disk using these tips –
(i) Insert the pen drive .
(ii) Click on open folder to view files option from the Auto play dialog box .
(iii) Select the desired files to be copied . Right click on the file select copy option .
(iv) Select a location on the hard disk to paste files(s). Right click on the screen and select paste option .
(v) Click on Safely Remove hardware option to remove the pen drive.
(vi) Remove the pendrive after the confirmation message appears.

Question. Write down the steps to-
(a) Create shortcuts on Desktop.
Answer : We use these steps to create a shortcut on desktop-
1. Select a file or folder .
2. Right click on the file or folder. Select send to option .
3. Select the desktop to Create a shortcut of this folder on the desktop .
(b) Open On Screen Keyboard.
1. Click on start button .
2. Click on all programs option .
3. Click on Accessories option .
4. Click on the Ease of Access option.
5. Click on the on screen keyboard option .
6. Click on the key to type.

Question. Describe various options to view the files and folders and the options to arrange them in different styles .
Answer : we can right click and select group by option and we can select any of these options to arrange files and folders in alphabetical order of their names.
(a) NAME- This option is used to arrange files and folders in alphabetical order of their names.
(b) DATE MODIFIED- This option is used to arrange icons in ascending order of the date of modification.
(c) TYPE- This option is used to arrange files and folders as per their file type .
(d) SIZE- This option is used to arrange files and folders in order of file size .

Question. Write down the steps generally followed to burn a CD.
Answer : We use these steps to burn a CD –
1. Insert CD in CD - ROM drive .
2. Open a CD – Burning software by double clicking its icon on the desktop .
3. Click on Data Burning option .
4. Click on Browse button and select the desired Files.
5. Click on Burn option to write the related files to the CD .
6. Click on OK at the Data Disc burning dialog box as it appears after Completion of the burning process.

 

a.) ISDN stands for ____________________________________________.

b.) _____________ provides real time video and voice communications.

c.) A blog is a __________ log.

d.) HTML stands for _______________________________________.

e.) A program is a set of __________________.

D. True or False.

a.) Blog is a weblog.

b.) An e – ticket stands for electronic ticket.

c.) Internet is a largest network.

d.) E – commerce is a process of buying and selling goods over the internet.

e.) Popular social networking sites include Facebook and Orkut.

f.) Assembler is a translation program.

g.) High level languages are easy to understand

E. What do the following abbreviations stand for?

a.) COBOL ________________________________________________________

b.) BASIC ________________________________________________________

c.) FORTRAN ________________________________________________________

d.) MSWLOGO ________________________________________________________

e.) HTML ________________________________________________________

F. In which year were the following languages developed:

a.) Java _________

b.) C++ _________

c.) FORTRAN _________

d.) BASIC _________

e.) COBOL _________

Q. A. Fill in the blanks

 
1. A database helps the user to organise retrieve sort and edit data as needed.
 
2. A Form window or a screen that contains numerous fields or spaces to enter,modify, and view one record at a time
 
3. Field Name is a column label for the field in a database.
 
4. To restrict type of data and the values while entering data in a cell,use Data Validation option.
 
5. To search for a record with specific value click on the Criteria button in a form.
 
6. PivotTable provides an easy way to present the data in a summarised way.
 
Q. B. STATE TRUE OR FALSE.
 
1. Records refer to the rows in the database. True
 
2. Field names can be duplicated in the database. False
 
3. You can sort the data only on one field False
 
4. Field represents a column in the database. True
 
5. Subtotal values in the database are calculated with Count function. False
 
6. In a database, one cannot rearrange the data as per the need. False
 
7. Conditional Formatting sets a cells format according to the condition that you specify. True
 
Q.C. APPLICATION BASED QUESTIONS
 
1. Kanika is a Chartered Accountant. She looks after the accounts of various companies and keeps their records in Microsoft Excel. She does not have any idea on how to view only those records that she wants to see. Suggest the feature of Microsoft Excel, using which she can perform this task.
 
Ans : Data > Sort & Filter > Filter 2. Varun in maintaining the marksheet of his class in Microsoft Excel. The teachers has asked him to restrict the marks enteries between 1 and 100 in all the subjects. Which feature of Microsoft Excel should Varun use in order to accomplish the task ? Ans : Data Validation feature. 
 
MULTIPLE-CHOICE QUESTIONS :
 
1. Which among the following features is used to filter the data in multiple fields using a specified criteria ?
Ans : (a) Advanced Filter
 
2. Which button under Data tab is used to remove a duplicate value from one or more columns ?
Ans : (c) Remove Duplicates
 
3. Which feature in a database provides an easy way to enter, modify and view one record at a time ?
Ans : (a) Form
 
4. Which feature helps you to display only those records that meet specified criteria ?
Ans : (c) Filter
 
5. Which feature allows us to arrange the given data according to a particular field either in ascending or descending order ?
Ans : (c) Sort

1. Differentiate between ‘empty’ and ‘container’ elements.

2. Differentiate between <P> and <BR> tags.

3. Explain the terms Tag and Attributes.

4. What is the purpose of using <HTML> tag in HTML?

5. What is an empty element?

6. What is anchor tag? Name any two attributes of the anchor tag?

7. Explain <IMG> tag. What are the different attributes of <IMG>.

8. What is list? How many types of lists we have in HTML?

9. What is table? Write the syntax to create in table.

10. Explain <BODY> Tag with any of its two attributes with example.

A.ANSWER THE FOLLOWING QUESTIONS :

 
Q 1. Describe the term Database.
Ans :A database is a collection of information related to a particular subject, such as maintaining addresses and phone numbers, a list of library books, etc. It helps the users to organise, retrieve, sort and edit data as per their requirements.
 
Q 2. What is the utility of Form in a database ?
Ans : A Form is a window or a screen that contains numerous field or spaces to enter, modify and view one record at a time. Each fields holds a field name
so that any user who views the form or enter data in it, gets an idea of its contents.
 
Q 3. What is the use of the Sorting feature in Excel ?
Ans : Sorting means arranging the given data according to a particular field either in ascending or descending order in a worksheet. Data can be sorted in rows on the basis of text, numbers, combination of text and numbers or dates.
 
Q 4. How is Filter useful ?
Ans : The Filter feature helps you to display only those records that meet the specified criteria and hide rest of the records.
 
Q 5. What is a PivotTable ? Describe its utility .
Ans : PivotTable is a powerful tool for consolidating, summarising and presenting the data.
 
Q 6. How is Advanced Filter different from Filter ?
Ans : The Advanced Filter option is used to filter data in multiple fields using specified criteria, whereas Filter option filters data on the basis of single field.
 
Q 7. State the difference between a Field and Record.
Ans : A Field is a column in a database that contains only one type of data. And a row in a database consists the information about one person or an object.

 

Create a BASICA file for the following programs:

1. WAP to input the user’s name and print a welcome message. (e.g.: Welcome Arjun!)

2. WAP to input user’s name and age. Find whether he is an adult or a child and print an appropriate message. (e.g.: Hello, Arjun! You are still a child!)

3. WAP to input two numbers and print the greater number. (e.g.: 25 is greater)

4. WAP to print numbers from 50 to 100. (using WHILE-END WHILE and FOR-NEXT)

5. WAP to print numbers from 1 to 20 in reverse order.

6. WAP to print first ten multiples of any given number. (using input from the user)

7. WAP to print any given table in proper format. (e.g.: 5 x 1 = 5)

8. WAP to print even numbers from 20 to 50. (e.g.: 20, 22, 24…. 50)

9. WAP to print odd numbers from 1 to 20 in reverse order. (e.g.: 19, 17, 15… 1)

10. WAP print the sum of numbers from 1 to 100. (e.g.: Sum of first 100 numbers = …)

* Your file should have program code for each of the above on the right side of the file.

* The output for each program should be clearly written on the left side(plain) of the file.

A). Fill in the blanks :-

 
1.) The base of Binary number system is 2
 
2.) The base of decimal number system is 10
 
3.) Octal Number system consists of 8 digits.
 
4.) In Binary addition, 1+1 equals to 10
 
5.) Binary number system is understood by the computer system.
 
6.) Hexadecimal uses 16 symbols to represent numbers.
 
7.) In Binary subtraction, 1-1 equals 0
 
B.) State true or False:-
 
1.) You can not perform arithmetical operations on binary numbers False
 
2.) The decimal number system consists of 10 digits i.e. 0 to 9 True
 
3.) The method to perform division of two binary numbers is not the same as that of decimal numbers. False
 
4.) 1 multiplied by 0 equals to 0 True
 
5.) Charles Babbage introduced the concept of 0 (Zero) False
 
6.) The numbers used in octal number system are 1 to 7 False
 
C.) Multiple choice questions:-
 
1.) __________ introduced the concept of 0 (zero).
(b) Aryabhat
 
2.) ____________ converts the decimal format into its binary equivalent.
(a) Digital Computer.
 
3.) A computer understands only ________code.
C) Binary
 
4.) In Binary Multiplication, 1x1 equals to ______.
(b) 1.
 
5.) To Convert Decimal number into Binary number, divide the number by ________.
(a) 2
 
D. Fill in the blanks:

1. ______ are made of letters, words or other characters.

2. The variables button is used to store _____ and ______.

3. A _____ is the basic component of the scratch software.

4. A ______ is a collection of blocks assembled in a particular order.

5. ____ is an organization engaged in promoting open source software.

E. True or false:

1. The stage area is divided into x,y grid.

2. There are seven shapes of programming blocks.

3. A locked sprite can be dragged into in our animation.

4. Google talk is used to send email.

5. A Blog is maintained by a group of people.

F. Brief Answers:

1. What is an object code?

2. Name 2 websites used to create Blog.

3. What is Scratch?

D. Definition:

1. Hat Block

2. Boolean block

G. Long Answers:

1. Differentiate between repeat and forever programming block.

2. Write the steps to view the built in projects in Scratch.

3. What are the advantages of E-commerce?

A.) Answer the following :-

 
1.) What is a number system? Name the different types of number system used.
Ans:- The number system is a set of values used to represent different quantities.
The different types of number system are :-
 
(1) Decimal number system
(2) Binary number system
(3) Octal number system
(4) Hexadecimal number system.
 
2.) What are the rules to convert a decimal number into binary number?
 
Ans:- Rules to convert decimal number into binary number are:-
 
Step 1:- Divide the given decimal number with the base 2
Step 2:- Write down the remainder & divide the quotient again by 2.
Step 3 :- Repeat the step 2 till the quotient is zero.
 
3.) Write the rules to multiply two Binary numbers.
Ans :- The rules for performing multiplication using binary number is same as that of the decimal numbers. It can be illustrated by the following table.
C-7_Computer_(Chapter-1)
 
4.) Briefly explain the octal number system
Ans :- The concept of octal numbers system came from the Native American. The octal number system consists of 8 digits i.e., 0 to 7 with base 8.
 
5.) What do you understand by Hexadecimal number system?
Ans :- The Hexadecimal number system is also known as Hex, consists of 16 digits. i.e. 0 to 9 and the letters A to F represents digits 10 to 15 with the base 16.

1. Explain the following command along with syntax:
(a) CHKDSK
(b) MKDIR
(c) CHDIR
(d) RMDIR

2. Write about MS-Word? Write its five features.

3. How will you add clip art in MS-WORD?

4. What do you know about MS-Access?

5. What are the "rules" of BASIC programming?

6. What is HTML? What are the advantages of HTML?

7. Define: "Internal and External commands"

8. Draw the structure of a Disk which shows Tracks and Sectors?

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CBSE Class 7 Computer Science All Chapters Worksheet

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