Grade 9: Very Short Answer Questions

 

Answer the following questions in short. (1 mark each)

1.              List any two examples of secondary memory.

Ans: Any two examples of secondary memory are:  Hard disk and USB flash drive.

2.              Write the most famous visual display unit.

Ans: The most famous visual display unit is LCD monitor.

3.              List any four applications areas of the computer.

Ans: Any four applications areas of the computer are Education, healthcare, business, and entertainment.

4.              Why computer is called a versatile machine?

Ans: Computer is called a versatile machine because it can perform a wide variety of tasks efficiently.

5.              What does ALU do?

Ans: ALU performs arithmetic and logical operations.

6.              Define computer bus.

Ans: A computer bus is a communication system that transfers data between components inside a computer.

7.              What is analog computer?

Ans: An analog computer is a type of computer that processes continuous data and performs calculations using physical quantities like electrical voltage, pressure, or mechanical movements, rather than digital signals. 

8.              Why computer is called diligent machine?

Ans: Computer is called diligent machine because it can work continuously without getting tired.

9.              What are the computers based on working principle?

Ans: The computers based on working principle  are Analog, digital, and hybrid computers.

10.         What is drawing canvas in Photoshop?

Ans: Drawing canvas in Photoshop is the workspace where images are created or edited.

11.         Write any two services of the internet.

Ans: Any two services of the internet are Email and web browsing.

12.         Write the name of two magnetic storage devices.

Ans: The name of two magnetic storage devices are Hard disk and floppy disk.

13.         Write the name of two softcopy output devices.

Ans: The name of two softcopy output devices are Monitor and projector.

14.         Define server.

Ans: A server is a computer or system that provides resources or services to other computers.

15.         What are the types of buses in the motherboard?

Ans: The types of buses in the motherboard are Data bus, address bus, and control bus.

16.         Which device is used to connect PCs with telephone lines?

Ans: Modem is used to connect PCs with telephone lines

17.         Mention any two application areas of IoT.

Ans: Any two application areas of IoT are Smart homes and healthcare.

18.         Define digital computer.

Ans: A digital computer processes data in numerical form using binary digits.

19.         List any two examples of secondary media.

Ans: Any two examples of secondary media are CDs and DVDs.

20.         What is a web browser?

Ans: A web browser is software used to access and view websites.

21.         List any two features of a computer?

Ans: Any two features of a computer are Speed and accuracy.

22.         Who invented the Tabaluting Machine?

Ans: Herman Hollerith invented the Tabulating Machine.

23.         Name any two popular web browsers.

Ans: any two popular web browsers are Google Chrome and Mozilla Firefox.

24.         What is an input device?

Ans: An input device is used to enter data into a computer.

25.         Define super computer.

Ans: A supercomputer is a powerful computer designed for complex calculations.

26.         What is hybrid computer?

Ans: A hybrid computer combines features of analog and digital computers.

27.         What is cloud computing?

Ans: Cloud computing is the delivery of computing services over the internet.

28.         State the different units of storage in the computer.

Ans: The different units of storage in the computer are:

Bit, byte, kilobyte, megabyte, gigabyte, terabyte.

29.         Differentiate between hard copy and soft copy output.

Ans: Hard copy is a physical printout, while soft copy is a digital display.

30.         Define data.

Ans: Data is raw facts or figures.

31.         What is uploading?

Ans: Uploading is transferring data from a local system to a remote system.

32.         Define downloading.

Ans: Downloading is transferring data from a remote system to a local system.

33.         Define search engine. List two examples of search engines.

Ans: A search engine is a tool to find information online; examples are Google and Bing.

34.         Define the term "GIGO".

Ans: GIGO stands for "Garbage In, Garbage Out," meaning poor input results in poor output.

35.         Define the term "BUG".

Ans: A bug is an error in a program.

36.         What is digital computer?

Ans: A digital computer processes data in binary form.

37.         What is keyboard?

Ans: A keyboard is an input device used to type data into a computer.

38.         Define system software.

Ans: System software manages and controls hardware operations.

39.         What is the use of a plotter?

Ans: A plotter is used to print high-quality graphics and designs.

40.         Define algorithm.

Ans: An algorithm is a step-by-step procedure to solve a problem.

41.         Define minicomputer.

Ans: A minicomputer is a medium-sized computer for small businesses.

42.         Write the function of SWAP and VAL in QBASIC.

Ans: SWAP exchanges values of two variables, and VAL converts a string to a numeric value.

43.         Write the functions of RIGHT$ in QBASIC.

Ans: RIGHT$ extracts a specified number of characters from the right side of a string.

44.         What is the purpose of the MID$ function in Q-basic?

Ans: MID$ extracts a substring from a specified position in a string.

45.         What are arithmetic operators?

Ans: Arithmetic operators perform mathematical operations like addition and subtraction.

46.         Write the function of LEN in Q-basic.

Ans: LEN returns the length of a string.

47.         What is loop?

Ans: A loop repeats a set of instructions until a condition is met.

48.         What is nested loop?

Ans: A nested loop is a loop inside another loop.

49.         Define infinite loop.

Ans: An infinite loop runs endlessly without termination.

50.         What is an operator?

Ans: An operator is a symbol used to perform operations on variables.

51.         What are relational operator?

Ans: Relational operators compare two values (e.g., ==, >, <).

52.         Define constant.

Ans: A constant is a fixed value that does not change during program execution.

53.         Define variable and their common types.

Ans: A variable is a memory location used to store data. Types of variable are integer, string, and float.

54.         What are the different types of operators?

Ans: The different types of operators  are Arithmetic, relational, logical, and assignment operators.

55.         Name any two conditional branching used in QBASIC.

Ans: Two conditional branching used in QBASIC are IF-THEN and SELECT CASE.

56.         List the three types of loops in QBASIC.

Ans: The three types of loops in QBASIC are FOR, WHILE, and DO loops.

57.         Write the function of LEFT$.

Ans: LEFT$ extracts a specified number of characters from the left side of a string.

58.         Write the function of TAB in QBASIC.

Ans: TAB moves the cursor to a specific column in the output.

59.         Write the function of INT and MID$ in QBASIC.

Ans: INT returns the integer part of a number, and MID$ extracts part of a string.

60.         What is the syntax for element selectors in CSS?

Ans: The syntax is selector {property: value;}.

61.         Who and when HTML was developed?

Ans: HTML was developed by Tim Berners-Lee in 1991.

62.         List two types of HTML tags.

Ans: Two types of HTML tags are Paired tags and singular tags.

63.         Which tag is used to define a paragraph in HTML?

Ans: <P> tag is used to define a paragraph in HTML.

64.         List any two formatting tags in HTML.

Ans: Any two formatting tags in HTML are <b> and <i> tags.

65.         Mention any two singular tags.

Ans: Any two singular tags are <br> and <img>.

66.         What is HTML?

Ans: HTML is a markup language used to create web pages.

67.         What is CSS?

Ans: CSS is a style sheet language used to design web pages.

68.         Define hyperlink.

Ans: A hyperlink is a clickable link that redirects to another page or resource.

69.         Define tag attribute.

Ans: A tag attribute provides additional information about an HTML element.

70.         How is the FONT tag used?

Ans: The FONT tag is used to change the font style, size, and color of text.

71.         Name the types of headings does an HTML contain?

Ans: HTML contains six types of headings (H1 to H6).

72.         Name the commonly used web browsers for viewing the HTML pages.

Ans: The commonly used web browsers for viewing the HTML pages are Google Chrome and Mozilla Firefox.

73.         List different ways to apply CSS on HTML documents.

Ans: Inline, internal, and external CSS.

74.         How many types of headings does an HTML contain?

Ans: HTML contains six types of headings (H1 to H6).

75.         What are the different selectors used in CSS?

Ans: The different selectors used in CSS  are Element, class, and ID selectors.