NCERT CLASS 6TH SORTING MATERIALS INTO GROUPS
Question: 1. Name the objects which can be made from iron and wood.
Answer: Wooden items: window, door, sofa, chair, etc.
Iron items: Car, truck, bridge, utensil, grill, etc.
Question: 2. Select those objects from the following which shine.
Glass bowl, plastic toy, steel spoon, cotton shirt.
Answer: Glass bowl and steel spoon
Question: 3. Match the objects given below with the materials from which they could be made. Remember, an object could be made from more than one material and a given material could be used for making many objects.
Question: 4. State whether the statements given below are True or false.
(a) Stone is transparent, while glass is opaque. (F)
(b) A notebook has luster, while eraser does not. (F)
(c) Chalk dissolves in water. (F)
(d) A piece of wood floats on water. (T)
(e) Oil mixes with water. (F)
(f) Sand settles down in the water. (T)
(g) Vinegar dissolves in water. (T)
Question: 5. Given below are names of some objects and materials.
Water, basketball, orange, sugar, globe, apple and earthen pitcher.
Group them as:
(a) Round shaped and other shapes.
Answer: Round-shaped: Basketball, orange, globe and earthen pitcher.
(b) Eatables and non eatables
Answer: Eatables: Water, orange, sugar and apple.
Non-eatables: Basketball, globe and earthen pitcher.
Question: 6. List all items known to you that float on water. Check and see if they will float on an oil or kerosene.
Answer: Items; like wood, cork, Styrofoam, etc. float on water as well as on oil.
Question: 7. Find the odd one out from the following.
(a) Chair, bed, table, baby, cupboard
Answer: Baby is a living being, while others are non-living.
(b) Rose, jasmine, Boat, Marigold, Lotus.
Answer- Boat is a mode of transport, while others are flowers.
(c) Aluminium, iron, copper, silver, sand.
Answer: Sand is non-metal, while others are metals.
(d) Sugar, Salt, sand, copper sulphate.
Answer: Sand is insoluble in water, while others are soluble in water.
Extra Questions
Answer the following questions-
Question: 1. Name two materials which are soluble in water.
Answer- Sugar and salt.
Question: 2. Name two transparent and two opaque materials.
Answer- Glass, acrylic sheet are transparent materials, while stone and wood are opaque materials.
Question: 3. What are metals?
Answer- The substance which is hard, has luster and is good conductor of heat and electricity is called metal.
Question: 4. What is transparent material?
Answer: The material which allows light to pass through it is called transparent materials.
Multiple choice questions-
Question: 1. Which of the following is soluble in water?
(a) Sand
(b) Oil
(c) Glycerine
(d) Iron filing
Answer: - (c) Glycerine
Question: 2. Which of the following is insoluble in water?
(a) Chalk
(b) Washing soda
(c) Lemon juice
(d) Sugar
Answer: - (a) Chalk
Question: 3. Which of the following is a soft material?
(a) Iron
(b) Glass
(c) Dimond
(d) Chalk
Answer: - (d) Chalk
Question: 4. Which of the following is a hard material?
(a) Chalk
(b) Wool
(c) Cotton
(d) Diamond
Answer: - (d) Diamond
Question: 5. Which of the following can float on water?
(a) Iron pin
(b) Wood
(c) Steel
(d) Coin
Answer: - (b) Wood
Question: 6. Which of the following materials would sink in water?
(a) Steel spoon
(b) Piece of wood
(c) Pencil
(d) Toothbrush
Answer: - (a) Steel spoon
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