Get complete, official step-by-step NCERT Solutions for Class 9 Skill Education (Kaushal Vikas) Chapter 5: Shaping Materials PDF for academic session 2026–27. This chapter is part of Work with Machines and Materials. All textbook in-text tasks, activities, portfolio assessments, and check-your-understanding questions have been verified by senior subject matter experts against the official NCERT prescribed syllabus.
🎯 NCERT Class 9 Kaushal Vikas Chapter 5 Solutions Overview:
The solutions below provide exhaustive coverage of every hands-on activity, project, reflection, and assessment in Chapter 5: Shaping Materials. Each answer adheres strictly to the textbook guidelines, using authentic data from NCERT while highlighting sample observational models to help Grade 9 students complete their portfolio files and score maximum marks in internal and board assessments.
NCERT Class 9 Kaushal Vikas Chapter 5 Textbook Solutions
Section 5.2 Processing material – transformation to a product Questions & Solutions
Q1. TASK: List all the factors that add value to any raw material. Ask around, search in the library, search online, read newspapers and identify experts who can help you.
Answer: According to the chapter, value addition occurs whenever raw materials are transformed from their natural form into useful finished products through various manufacturing processes. The key factors that add value to a raw material include:
1. Processing and Shaping: Processes such as melting, moulding, forging, casting, machining, cutting, and stitching transform raw material into a functional shape.
2. Quality Improvement and Finishing: Surface treatment processes like polishing, grinding, sanding, painting, or applying non-stick coatings improve product quality, appearance, and durability.
3. Feature Addition: Attaching additional components (such as wooden handles on metal utensils) or making the product compatible with modern equipment (making a pot both stove and induction-friendly) increases usability.
4. Design and Skill: Applying human skill, craftsmanship, and accurate design increases value manifold (for example, chiseling a stone into a statue or converting cotton to yarn, fabric, and finally a tailored garment).
Q2. TASK: Note different products in your surroundings. For example, utensils in the kitchen, screw, plastic bucket, shoes, cup and saucers, bed, carpet or mat, electric wires, fan, automobile engine, etc. Find out the raw materials used to make these products and the processes used to transform these materials into products.
Answer: Model Observation Log:
Kitchen Utensils:
Raw Material: Metal scrap, stainless steel, or aluminium.
Processes Used: Smelting (melting), casting/moulding into shape, machining, polishing, attaching wooden or plastic handles, and finishing.
Electric Wires:
Raw Material: Copper or aluminium (metal) and PVC (plastic).
Processes Used: Wire drawing (drawing metal into thin ductile wires), extruding plastic insulation over the metal wire, and coiling.
Wooden Bed / Furniture:
Raw Material: Wood or particle board.
Processes Used: Technical drawing, measuring and marking, cutting with a saw, joining with adhesives, nails, or screws, and sanding, polishing, or painting.
Garment / Apparel:
Raw Material: Cotton fibre.
Processes Used: Spinning into yarn, weaving into fabric, drawing patterns, cutting with scissors, stitching on a sewing machine, and ironing/trimming.
Plastic Bucket:
Raw Material: Synthetic plastic granules.
Processes Used:* Heating and injection moulding, cooling, and trimming excess plastic.
Section 5.3 Choosing material for a specific product Questions & Solutions
Q1. You may have noticed that storage units or shelves in your bathrooms are often made from steel, PVC or aluminium, and not wood. Can you guess why?
Answer: Storage shelves in bathrooms are exposed to high moisture, water splashes, and humidity. Steel, PVC (polyvinyl chloride [a durable plastic material]), and aluminium are selected because they are water-resistant and corrosion-resistant (do not rust or decay easily when exposed to water). Wood is avoided because it absorbs moisture, swells, warps, and decays over time in wet environments.
Q2. TASK: You have studied the characteristics of materials in Science. Work in a group to pick one product each from the options provided in Table 5.1, and discuss which material would be most suitable for making it. Justify your response on the basis of characteristics of materials.
Answer: Model Selection and Justification (based on Table 5.1):
Raincoat:
Best Suited Material: Rubber or Fabric (waterproof synthetic fabric).
Characteristics: Water resistance (prevents rain from soaking through) and elasticity/flexibility (allows easy movement).
Electric Wire:
Best Suited Material: Copper (inner core) and Rubber/PVC (outer covering).
Characteristics: High electrical conductivity and ductility (drawn into thin wires) for copper; electrical insulation and water resistance for rubber/PVC.
Water Bottle:
Best Suited Material: Steel, Aluminium, or Glass.
Characteristics: Water resistance, corrosion resistance, and safety for holding liquids without leaking.
Cooking Pot:
Best Suited Material: Steel, Copper, or Aluminium.
Characteristics: High thermal conductivity (transfers heat quickly for cooking), high heat tolerance, and hardness.
Cushion:
Best Suited Material: Fabric and Rubber (foam).
Characteristics: Elasticity, softness, and permeability (breathability for comfort).
Window:
Best Suited Material: Glass (pane) and Wood/Aluminium (frame).
Characteristics: Transparency (allows light to enter) and hardness/durability for glass; structural strength for the frame.
Keychain:
Best Suited Material: Steel or Wood.
Characteristics: Hardness, durability, and corrosion resistance to withstand daily handling.
School Bell:
Best Suited Material: Copper / Brass (metal alloy).
Characteristics: Hardness and acoustic sonority (produces a clear, loud ringing sound when struck).
Section 5.4 Key common processes Questions & Solutions
### 5.4.1 Following safety protocol
Q1. CHECK YOUR UNDERSTANDING: Safety Audit — Do you see any of the safety signs and symbols in your surroundings? Carry out a safety check of your school and nearby areas. Discuss where these symbols should be placed and why. If you feel the need, make up your own symbol and assign it a colour. Justify its importance.
Answer:
Model Safety Audit Log:
Observed Signs:
1. Green Exit Sign (Green): Found near emergency staircases to indicate the safe escape path during fires or emergencies.
2. Red Fire Extinguisher Sign (Red): Found near science laboratories and corridors to locate fire-fighting equipment immediately.
3. Yellow Electric Shock Warning (Yellow): Found on main electrical switchboards to warn students of high-voltage physical hazards.
4. Blue Helmet / Footwear Symbol (Blue): Found near construction sites or school workshop areas to indicate mandatory protective gear.
Placement Recommendations:
Yellow Slippery When Wet: Placed near freshly mopped corridors and washrooms to prevent slipping accidents.
Red Smoking Prohibited: Placed near school gates, libraries, and fuel/gas storage areas to prevent fire hazards.
Newly Designed Symbol:
Symbol: A yellow triangular warning sign showing a hand approaching a jagged sharp blade, labeled “CAUTION: SHARP CUTTING TOOLS”.
Color: Yellow background with black border and black symbol.
Justification:* Placed inside vocational workshops and craft rooms to warn students to handle saws, chisels, and cutters with care, preventing hand injuries.
### 5.4.2 Taking measurements
Q1. TASK: Select any instrument for measurement. Note the least count, the smallest measurement that can be taken by the instrument and any precaution to be taken. Two examples are given for your reference in Table 5.5.
Answer: Model Measurement Table (based on Table 5.5 template):
| Sr No. | Application | Measuring Instrument | Smallest Unit of Measurement (Least Count) | Precaution |
|---|---|---|---|---|
| :— | :— | :— | :— | :— |
| **1** | Measurement of cloth | Metre tape | 1 mm | Keep the cloth straight without any sag during measurement. |
| **2** | Water for construction | Bucket of 15 L | 1 L | Calibrate the bucket accurately. |
| **3** | Thickness of a small metal pipe | Vernier callipers | 0.02 mm | Ensure jaws are clean and close firmly without applying excessive force to avoid deformation. |
| **4** | Length of a school table | Metre scale | 1 mm | Align the zero mark of the scale precisely with one end and view vertically to avoid parallax error. |
| **5** | Land area of school field | Surveyor’s tape | 1 mm | Pull the tape tight and flat across the ground surface without twisting. |
### 5.4.3 Making technical drawings
Q1. TASK: Reading technical drawings — Look carefully at Figures 5.8 and 5.9 and answer the questions.
Answer:
Questions for Figure 5.8 (Technical drawing of a coffee table / study table):
1. What is the total length and breadth of the object?
Total length = 600 mm; Total breadth = 295 mm.
2. State the dimensions of the top of the object.
Top surface length = 600 mm; Top surface width = 295 mm; Particle board thickness = 15 mm.
3. How many legs does each table have and what is the length of each leg?
The table has 4 legs (cylindrical poles); total height of the table is 230 mm, with individual leg pole segments supporting the top and shelf.
4. What is the distance between two legs?
* Front view distance between legs = 540 mm; Side view distance between legs = 235 mm.
Questions for Figure 5.9 (Reading the plan of a house):
1. What are the dimensions of the kitchen?
Kitchen dimensions = 1.80 m × 2.25 m (width = 1.80 m, length = 2.25 m).
2. How many windows are there in the house?
There are 3 main windows marked on the outer walls (2 in the bedroom and 1 in the living room), plus ventilation openings in the bath/WC.
3. How many doors are there in the house?
There are 5 doors (main entrance door to living room, door to bedroom, door to kitchen, door to WC, and door to bath).
Q2. TASK: Creating a technical drawing — On the basis of the instructions and the 3D image in Figure 5.10, draw a stool with accurate measurements. You need to draw a stool whose actual measurements are: 1. Height – 50 cm, Seat width – 30 cm, Seat depth – 30 cm. 2. You can use the scale of 1:10.
Answer: Model Technical Drawing Plan and Scale Calculations:
Scale Calculation (Scale 1:10):
Scale rule: 1 unit on paper represents 10 units in real life.
Drawing Height: 50 cm ÷ 10 = 5 cm.
Drawing Seat Width: 30 cm ÷ 10 = 3 cm.
Drawing Seat Depth: 30 cm ÷ 10 = 3 cm.
Drawing Procedure for Projections:
1. Top View (Plan): Draw a square of 3 cm × 3 cm representing the top seat surface. Show leg corner positions using dashed hidden lines if covered.
2. Front View (Elevation): Draw a rectangle of width 3 cm and height 5 cm. Draw 2 vertical legs of 5 cm height at the outer edges and horizontal support bars.
3. Side View: Draw a rectangle of width 3 cm and height 5 cm, showing side legs and cross-support bars.
4. Title Box: Mark dimensions as “All dimensions in cm (Actual: 50 cm × 30 cm × 30 cm)” and state “Scale 1:10”.
Section 5.5 Selection of vocation Questions & Solutions
Q1. TASK: Exploring vocations around us — Look around you and answer the following questions:
a. What kind of work related to shaping materials do you observe around yourself? You can use different sources of information, for example, experts, site visits, libraries, online resources, specific government sites or reports.
b. Briefly describe what the work involves? What are the inputs? What are the key processes and what are the outcomes?
Answer: Model Class 9 Response:
a. Work Observed: Local Furniture Making / Carpentry Workshop and Plumbing Work.
b. Description of Furniture Making:
Inputs: Raw wood/particle board, nails, screws, adhesives, varnish/paint, measuring tape, saw, hammer, and sanding paper.
Key Processes: Reading technical drawings, measuring and marking dimensions, cutting wood with saws, joining parts using adhesives and fasteners, and finishing through sanding and polishing.
* Outcomes: Sturdy, well-finished wooden tables, chairs, and storage racks for local households and schools.
Q2. TASK: Mapping resources — Do you think it is possible for you to do the work in school? Table 5.7 below will help you decide.
Answer: Model Group Resource Mapping Evaluation (based on Table 5.7 criteria):
Work related to making products from materials: Simple Sheet Metal Work or Wooden Storage Tray Fabrication.
Completion in allocated time: Yes, a simple wooden tray can be designed, cut, assembled, and finished within the school project term.
Adequate space: Yes, the school craft/vocational workshop provides adequate space and workbench tables.
Expert identified: Yes, our school vocational instructor and a local carpenter agreed to guide us.
Tools and materials collection: Yes, basic tools (saws, hammers, measuring rules, safety goggles) and materials (plywood pieces, nails, polish) are available in school.
Real hands-on work: Yes, students can directly perform measuring, marking, sawing, joining, and polishing hands-on.
Section 5.7 Assess your learning Questions & Solutions
Q1. You are given clay and wood to make a pen stand. Which one of the two (clay and wood) will you choose? Compare the characteristics and explain your decision.
Answer:
I will choose wood to make a pen stand.
Comparison of Characteristics:
1. Wood: Wood is hard, strong, rigid, and durable. Once cut and assembled, it maintains a precise shape, can hold weight without cracking, and can be polished for a smooth finish.
2. Clay: Clay has high plasticity when wet (easy to mould), but unfired clay is brittle and breaks easily if dropped. Firing clay requires a high-temperature kiln.
Explanation: Wood is preferred for a sturdy pen stand because it resists impact, provides structural stability for holding heavy pens/scissors, and can be easily worked using basic measuring, cutting, and joining tools available in school.
Q2. Create a safety symbol to caution people about extremely hot surfaces. Think about the colour and image while you design it.
Answer:
Design Specification:
Shape: Equilateral Triangle (standard warning shape).
Background Colour: Yellow (indicates warning and physical hazards, as per Table 5.2).
Border & Image Colour: Black border with a central black symbol showing a hand pulling away from three vertical wavy heat lines rising from a flat surface.
Text Label: “CAUTION: HOT SURFACE – DO NOT TOUCH”.
Justification: Yellow signals physical hazards clearly. The symbol instantly communicates heat danger without relying on language, preventing burn injuries near heaters, kilns, or machinery.
Q3. Your teacher gives you three objects to measure – a pipe’s inner diameter, a cloth length, and the length of the classroom. Which instrument will you use for each and why?
Answer:
1. Pipe’s Inner Diameter:
Instrument: Vernier callipers.
Reason: Measuring a pipe’s inner diameter requires high precision with a very low tolerance for error. Vernier callipers have a least count of 0.02 mm and internal measuring jaws specifically designed to fit inside pipes.
2. Cloth Length:
Instrument: Metre tape (or tailor’s tape).
Reason: Cloth is flexible and must be kept flat without sagging. A metre tape (least count 1 mm) is flexible, easy to align along fabric, and convenient to handle.
3. Length of the Classroom:
Instrument: Surveyor’s tape (or Distance metre).
Reason: A classroom length spans several metres. A surveyor’s tape (or digital distance metre) allows quick, accurate long-distance measurement up to tens of metres without taking multiple small step measurements.
Q4. Your group made a wooden tray, but it looks uneven and does not stand flat. On the basis of the common steps of developing a product discussed in the chapter, identify what could be the cause of the error.
Answer: On the basis of the common steps of product development (Design & Estimate → Measure & Mark → Cut & Shape → Join & Assemble → Finish), the uneven tray could be caused by errors in the following steps:
1. Inaccurate Measurement and Marking: Failing to use an appropriate measuring tool, misreading scale lines, or marking diagonal corners unevenly before cutting.
2. Improper Cutting and Shaping: Sawing wood at an angle rather than along straight, perpendicular lines, or holding wood loosely without a vise.
3. Assembly Error: Joining base and side pieces with nails/screws without checking right angles using a tri-square on a flat surface.
Q5. Create a technical drawing (with front, top, and side views) of a simple rack for storing sports items.
Answer: Model Technical Drawing Specification:
Scale Selected: 1:10 (1 cm on paper represents 10 cm in real life).
Actual Dimensions: Total Height = 100 cm, Width = 80 cm, Depth = 40 cm (Drawing sizes: Height = 10 cm, Width = 8 cm, Depth = 4 cm).
Projections:
1. Top View (Plan): A rectangle of 8 cm × 4 cm showing top frame edges and storage net/slats.
2. Front View (Elevation): A rectangle of 8 cm × 10 cm showing 3 horizontal shelf tiers spaced 3.3 cm apart and vertical side support legs.
3. Side View: A rectangle of 4 cm × 10 cm showing shelf depth and side frame cross-bracing.
4. Symbols & Annotations:* Solid visible lines for outer frame, dashed hidden lines for rear shelf supports, center lines for symmetry, and a title box stating “Sports Storage Rack, Scale 1:10”.
Q6. Of the tasks that you did, which did you enjoy the most? Which did you enjoy the least? Give examples of what went well and what did not go well. What would you do differently next time?
Answer: Model Reflection:
Task Enjoyed Most: Conducting the safety audit around the school and drawing 3D projections of the coffee table and stool.
Task Enjoyed Least: Re-measuring long dimensions after initial line markings slipped due to improper tape holding.
What Went Well: Reading house plans (Figure 5.9) and calculating scale dimensions (1:100 and 1:10) worked smoothly.
What Did Not Go Well: Our first freehand drawing lacked proper projection alignment between the front and side views.
* What to Do Differently Next Time: Use set-squares, a T-scale, and grid paper for technical drawings, and double-check instrument least counts before cutting materials.
Q7. Give examples of how you can apply your learnings in a real-life situation.
Answer:
1. Selecting Materials: Choose corrosion-resistant materials like aluminium, PVC, or stainless steel for outdoor or bathroom fittings instead of untreated wood or iron to prevent rust and decay.
2. Reading Technical Drawings: Read assembly manuals, dress patterns, or architectural house floor plans (plans and elevations) accurately when buying or arranging furniture.
3. Accurate Measurement: Select measuring tools based on required precision — use vernier callipers for small pipe fittings and surveyor’s tape for garden layout planning, taking care to avoid parallax errors.
4. Workplace Safety: Identify and follow standard safety signage (red, yellow, blue, green) in public places, wear protective gear (gloves, goggles) during DIY repair work, and keep workspaces clean to prevent accidents.
More Kaushal Vikas Chapters & Study Resources
- ⬅️ Previous: Chapter 4: Additional Vocations (Work with Life Forms)
- ➡️ Next: Chapter 6: Construction
- 📚 All Class 9 NCERT Books: Class 9 NCERT Books (2026–27)
- 📖 Full Library: All NCERT Books PDF (Class 1–12)
Frequently Asked Questions (FAQs)
Q1: What is the main objective of Kaushal Vikas Chapter 5?
Ans: Chapter 5 (Shaping Materials) provides Grade 9 students with foundational vocational knowledge, real-world skill-building tasks, and practical applications in Work with Machines and Materials.
Q2: Are these solutions verified according to the 2026–27 CBSE curriculum?
Ans: Yes. All questions, exercises, and tasks are solved directly from the official NCERT 2026–27 textbook following official NCERT pedagogical guidelines and the latest CBSE marking scheme.