Exercise (NCERT Text Book)
Q1: Name five objects which can be made from wood.
Ans : chair, window, table, bed and doors
Q2: Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt
Ans : Glass bowl, steel spoon.
Q3: 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.
Objects Materials
Book Glass
Tumbler Wood
Chair Paper
Toy Leather
Shoes Plastics
Ans :
Objects Materials
Book Paper
Tumbler Glass
Chair Wood
Toy Plastics
Shoes Leather
Q4: State whether the statements given below are True or False.
- Stone is transparent, while glass is opaque.
- A notebook has lustre while eraser does not.
- Chalk dissolves in water.
- A piece of wood floats on water.
- Sugar does not dissolve in water.
- Oil mixes with water.
- Sand settles down in water.
- Vinegar dissolves in water.
Ans :
- False
- False
- True
- True
- False
- False
- True
- True
Q5: Given below are the names of some objects and materials: Water, basket ball, orange, sugar, globe, apple and earthen pitcher Group them as:
(a) Round shaped and other shapes
(b) Eatables and non eatables
Ans :
(a) Rounded shaped : basket ball, Orange, globe, apple.
other shapes : Water, sugar, earthen pitcher.
(b) Eatables: Water, orange, apple, sugar.
Non eatables: Basket ball, globe and earthen pitcher.
Q6: List all items known to you that float on water. Check and see if they will float on an oil or kerosene.
Ans: The items which float on water are as Balloons, football, dry leaf, boats, steal glass, a piece of dry wood, oils.
These all also float on an oil or kerosene.
Q7: Find the odd one out from the following:
- Chair, Bed, Table, Baby, Cupboard
- Rose, Jasmine, Boat, Marigold, Lotus
- Aluminium, Iron, Copper, Silver, Sand
- Sugar, Salt, Sand, Copper sulphate
Ans :
- Baby
- Boat
- Sand
- Sand