HALF YEARLY EXAMINATION (2025-26) Std.: VIII Answer Scheme Sub.: Computer Studies Time Allowed: 1 hour Maximum Marks: 30

HALF YEARLY EXAMINATION (2025-26)

Std.: VIII Answer Scheme Sub.: Computer Studies 

Time Allowed: 1 hour Maximum Marks: 30

General Instructions:

i. All questions are compulsory.

Q.1 Select the correct option. [8]

Learning Outcome: to define shape generators

a) Why are Shape Generators useful in Tinkercad? (1) [U]

i. They can be used to convert a 2D shape into a 3D object.

ii. They can be used to generate a shape based on a sketch.

iii. They are used to automatically create hollow objects.

iv. They can be used to create different forms of a shape

easily by changing its properties.

Ans. They can be used to create different forms of a shape easily by

changing its properties.

Source: pg. no. 16

Learning Outcome: to use custom shapes for designing 3D

objects

b) You want to use a Voronoi tile to create a pattern on another

object in Tinkercad. What should you do just before grouping

the tile and the other object?

(1) [U]

i. Make both objects hollow.

ii. Make the Voronoi tile hollow.

iii. Align the Voronoi tile to the bottom of the object.

iv. Rotate the Voronoi tile by 90 degrees.

Ans. Make the Voronoi tile hollow.

Source: pg. no. 27

Learning Outcome: to create a form to enter data using wizard

c) Given below are two statements for Forms in OpenOffice Base.

One is Assertion(A), and the other is Reason (R).

Assertion (A): A form is used to enter and edit data.

Reason (R): Forms can contain only the fields of a table and

cannot include other elements like text or graphics.

Consider the above A and R statements and identify the correct

answer.

(1)

[An]

i. Both A and R are true, and R is the correct explanation of A.

ii. Both A and R are true, but R is not the correct explanation of

A.

iii. A is true, but R is false.

iv. A is false, but R is true.

Ans. A is true, but R is false.

Source: pg. no. 61

Learning Outcome: to identify the components of OpenOf ice

Base

d) You are working on a database that contains the marks of the

students in a class. You want to retrieve the records of only

those students who scored more than 90 marks.

Which of the following database objects will help you do this?

(1) [R]

i. Table ii. Forms

iii. Query iv. Reports

Ans. Query

Source: pg. no. 43

Learning Outcome: to create a report from tables using wizard

e) A staff member created a report showing the sales data for a

year. Some of this data was updated in the table, however, the

report still shows old data. What type of report was most likely

created?

(1)

[Ap]

i. Dynamic report ii. Printed report

iii. Static report iv. Summary report

Ans. Static report

Source: pg. no. 65

Learning Outcome: to define e-commerce services

f) Mr. Ramesh runs a factory to make school bags. He supplies

them to nearby shops and sometimes sells them directly to

schools. Who is Mr. Ramesh in this scenario?

(1) [R]

i. Buyer ii. Retailer

iii. Producer iv. Wholesaler

Ans. Producer

Source: pg. no. 71

Learning Outcome: to identify online modes of payment

g) How does a UPI transaction take place? (1) [U]

i. Through a credit card company

ii. Directly between two bank accounts

iii. Through a mobile wallet

iv. Using physical cash

Ans. Directly between two bank accounts

Source: pg. no. 74

Learning Outcome: to create a blog using a blogging platform

h) Which of the following is not a feature of blogs? (1) [R]

i. Anyone can edit the posts

ii. Posts are updated regularly

iii. Posts are usually written by a single author

iv. They are always public

Ans. Anyone can edit the posts

Source: pg. no. 76

Q.2 Answer the following questions in short. [10]

Learning Outcome: to use custom shapes for designing 3D

object

a) Which section of Tinkercad contains the MetaFillet shape? What

can you use it for?

(2) [R]

Ans: The MetaFillet shape is found in the Shape Generators section.

It is useful for filleting the edges or corners of an object to create

smooth, curved edges quickly.

Source: pg. no. 28

Learning Outcome: to know about the views of a table

b) What is the difference between the Design View and Data View

of a table in OpenOffice Base?

(2) [U]

Ans. Design view allows you to create a table by specifying the field

names, properties and data types.

Data view allows you to enter data in the database table.

Source: pg. no. 46-47

Learning Outcome: to know about data types of fields

c) Anjali has created a table to store students’ feedback on a

particular class. She notices that in case of long comments, only

a part of the message is saved in the table.

(2)

[An]

i. What could be the reason behind this issue?

Ans. Anjali must have used the Text [VARCHAR] data type,

which allows only 255 characters to be entered.

ii. Which data type should Anjali use to store long

comments?

Ans. Anjali should use the Memo [LONGVARCHAR] data type,

which stores large amounts of text, allowing more than

255 characters.

Source: pg. no. 47

Learning Outcome: to identify the dif erent categories of

e-commerce

d) Describe how the B2C model of e-commerce works. (2) [U]

Ans. In this model, a company sells goods and services directly to

customers. Customers or buyers can browse the company’s

website to see products, photos and reviews of the product they

want. They then place an order and the company sends the

goods directly to them.

Source: pg. no. 72

Learning Outcome: about virtual reality and augmented reality

e) What is Augmented Reality (AR)? How is it different from Virtual

Reality?

(2) [U]

Ans. Augmented Reality is a technology that overlays

computer-generated elements, such as images, videos, or

interactive objects, onto the real-world environment.

Virtual Reality is a computer-generated environment, where

users can interact and immerse themselves through a

head-mounted display (HMD) or VR headset.

Source: pg. no. 84

Q.3 Do as directed. [12]

Learning Outcome: to use custom shapes for designing 3D

object

a) Anita drags an Extrusion shape onto the workplane and notices

a small window showing a grid and a sketch.

What is the purpose of this window?

How can she use it to modify her shape in different ways?

(3)

[Ap]

Ans. ● This window consists of a sketch of the object that is

controlled by Bezier handles.

● It allows the user to customise the form of the shape.

● She can drag the Bezier handles away from an anchor point

to create smoother curves, and towards an anchor point to

create sharper curves in the object. She can move the

Bezier handles beyond the center of the object to

self-intersect the volume.

Source: pg. no. 16-17

Learning Outcome: to use Codeblocks to create a 3D

design

b) Observe the script using Codeblocks to design the given pattern

in Tinkercad. Answer the following questions based on the

script. 

[Ap]

i. What will you do to increase the height of the box to 50? (1)

Ans. Change the Height value in the "Add box" block from 20

to 50.

ii. What is the purpose of the "Rotate around Axis z" block? (1)

Ans. It rotates the box around the z-axis by a specified angle

to help create a pattern.

iii. If you want to use one more box in the pattern, what

changes will you make in this script?

(1)

Ans. You should add another set of "Add," "Move," and

"Rotate" blocks.

Source: pg. no. 31-36

Learning Outcome: to know about data types of fields, to

change the properties of fields in a table

c) You are creating a ‘Student’ table in a database in OpenOffice

Base. Answer the following questions with respect to this table.

[Ap]

i. How can you prevent the user from entering duplicate

values in the "Roll Number" field?

(1)

Ans. Set the "Roll Number" field as the Primary Key.

ii. What can you do to ensure the "Name" field is not left

blank?

(1)

Ans. Set the ‘Entry Required’ property to Yes.

iii. Which field property should be used to automatically

insert the value '6' in the “Class” field when no value is

entered for a new record?

(1)

Ans. Set the ‘Default Value’ property to 6.

Source: pg. no. 49-51

Learning Outcome: to identify online modes of payment

d) Neeti frequently shops from online stores and uses her credit

card to make payments.

[R]

i. Name the service used by online stores to process

credit card payments. What is its role in online

transactions?

(2)

Ans. Payment Gateway

It acts as a middleman between the buyer and the

online store, by providing a safe platform for

transactions by encrypting the purchase information,

processing payments and ensuring secure transactions.

ii. List two commonly used payment gateways in India. (1)

Ans. CCAvenue, Razorpay, BillDesk

Source: pg. no. 74