ISC Class 11 Syllabus 2027 Geometrical and Mechanical Drawing

ISC YEAR 2027

INDIAN SCHOOL CERTIFICATE
EXAMINATION

GEOMETRICAL AND
MECHANICAL DRAWING
(869)

February 2025
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experience.
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aspirations.

GEOMETRICAL AND MECHANICAL DRAWING (869)

This subject may not be taken with Geometrical and Building Drawing

Candidates will be required to reach a minimum edge. The use of drafting machines will be
standard in the subject as a whole. The use of permitted). A2 size paper will be used. The
drawing board, tee-square and set-square will be recommendation of IS:696-1972 Indian Standard,
required. (Candidates may, if they wish, use a Code of Practice for General Engineering Drawing
drawing board fitted with a parallel motion straight should be followed.

CLASS XI
There will be two papers in the subject: PAPER II (PROJECT WORK): 20 Marks
Paper I - Theory: 3 hours…… 80 Marks
In addition to the syllabus prescribed above,
Paper II - Project Work ……. 20 Marks candidates are also required to be assessed in Project
Work. The Project work will be assessed by the
PAPER I (THEORY): 80 Marks subject teacher.
SECTION A All candidates will be required to attempt either
Plane Geometry Drawing A or Drawing B from each of the three
project sheets given. Each drawing will carry
Construction and use of scales including diagonal 5 Marks.
scales. Enlargement and reduction of irregular plane
figures. Construction of triangles, quadrilaterals and Mark allocation for each Drawing (5 marks):
polygons. Similar plane figures. Problems on Criteria Marks
circles, tangents and normals. Loci such as the paths
of points in simple link mechanisms. Methods of 1. Project size / completeness 1
construction of ellipse, including its elementary
2. Line Quality 1
properties, parabola and rectangular hyperbola;
cycloidal and involute curves. 3. Neatness 1
SECTION B 4. Accuracy 1
Solid Geometry 5. Title Block 1
Orthographic projection. (Diagrams printed in the TOTAL 5
question papers may be in either First or Third Angle
projections; the projection used will be stated
projections; the projection used will be stated. Marks out of 20 will be distributed as given
Solutions in either First or Third Angle projections below:
will be accepted). Projection involving use of
1. 3 Drawings × 5 Marks 15 Marks
auxiliary planes; simple problems on auxiliary
projection. Simple problems on the intersection of 2. Viva-Voce by the subject 5 Marks
prisms, pyramids, cylinders, right circular cones, and teacher
spheres. Determination of true length of a line in
space: sections and surface development of prisms, TOTAL 20 Marks
pyramids, cylinders and right circular cones. Helix
treated as a locus with applications on the projection
of helices. Isometric and oblique projection without
the use of isometric scale.

ISC Examination Year 2027 1

Instructions for Project Work:
• Candidates must use A2 size (Half Imperial) drawing sheets to complete all projects. A sample project
sheet layout with specifications, is given below:

• Candidates must use the given layout and specifications to complete each project sheet.
• Accuracy, neat and clean work is expected from candidates.
• Candidates need not draw / paste the questions.

ISC Examination Year 2027 2

PROJECT SHEETS
Candidates will be required to attempt either Drawing A or Drawing B from each of the three project
sheets given below.
Project Sheet 1
Draw by using 1st OR 3rd angle method of projection i) F.V, ii) T.V. & iii) L.H.S.V

OR

ISC Examination Year 2027 3

Project Sheet 2
Copy the given template & insert any six dimensions.

OR

ISC Examination Year 2027 4

Project Sheet 3
Draw an isometric view of a given object.

OR

ISC Examination Year 2027 5