Pathik — CBSE Class 6–12 Notes, Worksheets & MCQ Quizzes

 Chapter 6: Materials Around Us Worksheet  A. Multiple Choice Questions  1. Which of the following is a material? (a) Chair (b) Wood ✅ (c) Table (d) Bottle   2. The method of arranging objects into groups based on common properties is called: (a) Measurement (b) Classification ✅ (c) Observation (d) Separation   3. Which of the following has a lustrous surface? (a) Wood (b) Paper (c) Copper ✅ (d) Rubber   4. Which material is generally soft? (a) Iron (b) Stone (c) Sponge ✅ (d) Steel   5. A material through which objects can be seen clearly is called: (a) Opaque (b) Translucent (c) Transparent ✅ (d) Lustrous   6. Which of the following is translucent? (a) Wooden door (b) Butter paper ✅ (c) Clear glass (d) Iron sheet   7. Which of the following is opaque? (a) Air (b) Clear glass (c) Water (d) Wood ✅   8. Which of the following dissolves completely in water? (a) Sand (b) Sawdust (c) Sugar ✅ (d) Chalk powder...

 Chapter 6: Materials Around Us 1. Materials Around Us Everything around us is made up of materials such as paper, wood, cloth, glass, metal, plastic and clay. A material is any substance used to make an object. One object may be made from one or more materials. The same material can be used to make different objects.      Examples: - Notebook → paper - Tumbler → glass/plastic/metal - Pen → plastic, metal and ink 2. Classification of Materials:-  Classification means arranging objects or materials into groups based on their common properties. Materials can be grouped according to: - Colour - Shape - Hardness - Softness - Lustre - Appearance - Transparency - Solubility - Other properties      Why do we classify materials?  Classification helps us: Organise objects. Compare materials. Study their properties. Choose suitable materials for particular uses. 3. Properties of Materials A. Lustrous and Non-lustrous Lustrous Materials having a shiny s...

 Chapter 5: Measurement of Length and Motion Worksheet   Section A – Multiple Choice Questions 1. What is the SI unit of length? (a) Centimetre (b) Metre (c) Kilometre (d) Millimetre   Answer: (b) Metre 2. Which of the following is not a standard unit of length? (a) Metre (b) Centimetre (c) Handspan (d) Kilometre   Answer: (c) Handspan 3. 1 metre is equal to: (a) 10 cm (b) 100 cm (c) 1000 cm (d) 50 cm   Answer: (b) 100 cm 4. 1 centimetre is equal to: (a) 10 mm (b) 100 mm (c) 1 mm (d) 1000 mm   Answer: (a) 10 mm 5. Which unit is most suitable for measuring the distance between two cities? (a) Millimetre (b) Centimetre (c) Metre (d) Kilometre   Answer: (d) Kilometre 6. Which instrument is most suitable for measuring the girth of a tree? (a) 15-cm ruler (b) Flexible measuring tape (c) Metre scale only (d) Handspan   Answer: (b) Flexible measuring tape 7. While measuring an object with a scale, the eye should be: (a) Far ...

  Chapter 5: Measurement of Length and Motion 1. Measurement of Length:- Measurement means finding the size or amount of something by comparing it with a standard unit. In earlier times, people used body parts such as: Handspan (balisht) Finger width Foot Arm length Stride However, these measurements are not reliable because body parts differ in size from person to person. Therefore, standard units are needed.      2. Unit of Measurement:- A measurement has two parts: 1. A number 2. A unit For example, 13 cm means 13 is the number and centimetre (cm) is the unit.      3. Standard Units:- The internationally accepted system of units is called the International System of Units (SI). The SI unit of length is metre (m).      Important units of length Unit Symbol Relation Kilometre km 1 km = 1000 m Metre m 1 m = 100 cm Centimetre cm 1 cm = 10 mm Millimetre mm 1 mm = 0.1 cm Thus: 1 km = 1000 m 1 m = 100 cm 1 cm = 10 mm...

 Chapter 4: Exploring Magnets Worksheet  Section A – Multiple Choice Questions   1. Which of the following is a magnetic material? (a) Wood (b) Plastic (c) Iron (d) Glass Answer: (c) Iron 2. Which of these is a naturally occurring magnet? (a) Bar magnet (b) Lodestone (c) Ring magnet (d) U-shaped magnet Answer: (b) Lodestone 3. A magnet has how many poles? (a) One (b) Two (c) Three (d) Four Answer: (b) Two 4. The two poles of a magnet are called: (a) East and West (b) Up and Down (c) North and South (d) Left and Right Answer: (c) North and South 5. Where is the magnetic force of a bar magnet strongest? (a) At the centre (b) At the poles (c) Everywhere equally (d) Only on one side Answer: (b) At the poles 6. Which materials are attracted towards a magnet? (a) Magnetic materials (b) Non-magnetic materials (c) All materials (d) Plastic materials Answer: (a) Magnetic materials 7. What happens when two North poles are brought close together? (a) They attract (b) They repel (c) ...

 Chapter 4: Exploring Magnets 1. Magnets A magnet is a material that attracts certain objects, especially those made of iron. Naturally occurring magnets are called lodestones. Magnets made by humans are called artificial magnets. Magnets are available in different shapes, such as:   Bar magnet   U-shaped magnet   Ring magnet   Disc magnet   Cylindrical magnet   Spherical magnet 2. Magnetic and Non-Magnetic Materials Magnetic Materials:-  Materials that are attracted towards a magnet are called magnetic materials. Examples: Iron Nickel Cobalt Some alloys containing these metals Non-Magnetic Materials:-  Materials that are not attracted towards a magnet are called non-magnetic materials. Examples :- Wood, plastic, glass and rubber.    3. Poles of a Magnet:-  Every magnet has two poles: 1. North Pole (N) 2. South Pole (S)    Iron filings are attracted most strongly near the ends of a magnet.    These ends are ...