Class 6: Science Chapter 4 solutions. Complete Class 6 Science Chapter 4 Notes.
Lakhmir Singh Manjit Kaur Solutions for Class 6 Science : Chapter 4- Sorting Materials Into Groups
Lakhmir Singh Manjit Kaur 6th Science Chapter 4, Class 6 Science Chapter 4 solutions
(1) Ans: Living objects and Non-living objects.
(2) Ans: Plants and Animals.
(3) Ans: Naturally occurring materials are Wood and Coal.
- Man-made materials: Iron and cement.
(4) Ans: Gold and Diamond.
(5) Ans: Paper and wood.
(6) Ans: Glass bowl, Steel spoon, Diamond ring.
(7) (a) Chalk dissolves in water. False
(b) Sugar does not dissolve in water. False
(c) Oil mixes with water.False
(d) Sand settles down in water. True
(e) Vinegar dissolves in water. True
(f) A notebook has luster. True
(g) A piece of wood floats on water. True
(h) Stone is transparent whereas glass is opaque. False
(8) Ans: Steel has the property of hardness and sponge has the property of softness.
(9)Ans: Vinegar.
(10) Ans: Oxygen and Carbon dioxide.
(11) Ans: Water and Glycerin.
(12) Ans: Single layer.
(13) (a) Through which we cannot see at all?
Ans: Opaque material.
(b) Through which we can see clearly?
Ans: Transparent materials.
(c) Through which we cannot see clearly?
Ans: Translucent materials.
(14) Ans: Glass and water.
(15) Ans: Cardboard, Wood.
(16) Ans: Water and Alcohol.
(17) Fill in the following blanks with suitable words:
(a) Mustard oil and water are immiscible liquids.
(b) Water and milk are miscible liquids.
(c) A piece of glass is transparent but a piece of cardboard is opaque.
Short Answer Type Questions
(18) Ans: Wood and plastic are lighter than water.
- Iron nail and gold heavier than water.
(19) Ans: Wood and plastic can float on water.
- Iron nail and soil can sink in water.
(20) Ans: Heavier: Chalk, iron, copper, aluminium and stone.
Lighter: Wood, oil, kerosene, ice, plastic.
(21) Ans: Float on water: A plastic toy, A cube of ice, Dry leaves, saw dust.
Sink in water: An iron nail, Sand.
(22) (a) Ans: Sugar and common salt.
(b) Ans: Sand and Chalk powder.
(23) Ans: Soluble: Potassium permanganate, Alum, sugar, oxygen, copper sulphate.
Insoluble: Groundnut oil, wax, sand, nitrogen, methane.
(24) Ans: Natural materials: Water, coal, Wood, wool, Gold.
Man-made materials: Nylon, paper, plastic, glass, steel.
(25) Ans: (a) Chair – wood and plastic
(b) Clothes – cotton and silk.
(c) Coins – gold and silver.
(d) Utensils – Copper and iron.
(e) Shoes – Leather and plastic.
(26) Ans: (a) Glass – Mirror and tumbler.
(b) Iron – Nails and pipes.
(c) Copper – Utensils and coins.
(d) Aluminum – Utensils and window-frames.
(27) (a) Wood – Table, chair, doors, windows, book-rack.
(b) Cotton – Fabrics, pillows, mattresses, quilts, wicks.
(c) Leather – Shoes, bags, purses, suitcase, sofa.
(d) Paper – Books, note-books, newspaper, calendars, envelope.
(28) Ans: Luster – Gold pendant, aluminium sheet, glass mirror, brass door handle, stainless steel tumbler.
No luster: Wooden table, sand, sheet of paper, leather sofa, jute bag.
(29) Ans: Transparent: Clear glass, water, Air,
Translucent: Butter paper, ground glass,
Opaque: Cardboard, Brick wall, aluminium sheet.
(30) Ans: Hard materials – Iron, Diamond, Wood, Bone.
Soft materials – Cotton, Chalk, Wax, Clay, Sponge, Feathers.
Long Answer Type Questions
(31) Ans: The plants and animals which live in water use the oxygen dissolved in water for respiration.
- The plants which live in water use the carbon dioxide dissolved in water for the process of photosynthesis.
(32) (a) Ans: The matter of which an object is made is called material.
Examples: Wood, glass, metals, leather, cotton etc.
(b) Ans: Cricket bat – wood
Pressure cooker – aluminium.
Beaker – glass.
One rupee coin – Stainless Steel.
Book – Paper.
Screw – Iron.
Drawing sheet – Paper.
Mirror – Glass.
Calendar – Paper.
Table – Wood.
(33) Ans: Hard materials: Those materials which cannot be easily compressed, cut, bent or scratched are called hard materials.
Examples: Iron and steel.
Soft materials: Those materials which can be easily compressed, cut, bent or scratched are called soft materials.
Example: Sponge and cotton.
(34) Ans: Transparent material: Those materials through which we can see clearly are called transparent materials.
Example: Glass and water.
Translucent material: Those materials through which cannot see clearly are called translucent materials.
Example: Ground glass and Butter paper.
Opaque materials: Those materials through which we cannot see at all are called opaque materials.
Example: Cardboard and Wood.
(35) Ans: All the living objects need food, water and air for their survival whereas non-living objects do not require these things.
(b) Ans: Living objects – Child, Rabbit, Sparrow, Coconut tree, Fish.
Non-living objects – Ball pen, Note-book, Chair, Stone, Football.
(36) (a) Ans: All the plants can make their food by using carbon dioxide, water and sunlight whereas animal cannot make their food in this way.
(b) Plants – Mushroom, Lotus, Paddy, Algae.
Animals: Mosquito, Rat, Goat, frog, Snail, Snake.
Multiple Choice Questions (MCQs)
(37) Ans: (b) algae.
(38) Ans: (c) feather.
(39) Ans: (b) hydra.
(40) Ans: (c) iron.
(41) Ans: (b) crane.
(42) Ans: (a) cloud
(43) Ans: (b) air.
(44) Ans: (a) ground glass.
(45) Ans: (c) ice.
(46) Ans: (a) wood.
(47) Ans: (c) chalk powder.
(48) Ans: (d) kerosene.
(49) Ans: (b) lead.
(50) Ans: (d) diamond.
Download PDF
Lakhmir Singh Manjit Kaur Solutions for Class 6 Science: Chapter 4- Sorting Materials Into Groups
Download PDF: Lakhmir Singh Manjit Kaur Solutions for Class 6 Science: Chapter 4- Sorting Materials Into Groups PDF
Chapterwise Lakhmir Singh Manjit Kaur Solutions for Class 6 Science :
- Food: Where does it come from
- Components of Food Part-1 / Components of Food Part-2
- Fibre to Fabric
- Sorting Materials Into Groups
- Separation of Substances
- Changes Around Us
- Getting to Know Plants
- Body Movements
- The Living Organisms and Their Surroundings
- Motion and Measurement of Distances
- Light Shadows and Reflection
- Electricity and Circuits
- Fun with Magnets
- Water
- Air Around Us
- Garbage In Garbage Out
About Lakhmir Singh Manjit Kaur
Students studying under the Central Board of Secondary Education find the textbooks of Lakhmir Singh and Manjit Kaur as one of their go-to textbooks for references. These books are designed based on the latest CBSE syllabus. Every concept that is explained in this textbook comes with supporting examples and problems that give students an opportunity to understand the application of formulas and equations.