Advertisements
Advertisements
प्रश्न
Which of the following statements is not true?
पर्याय
Materials are grouped for convenience.
Materials are grouped to study their properties.
Materials are grouped for fun.
Materials are grouped according to their uses.
Advertisements
उत्तर
Materials are grouped for fun.
Explanation:
Materials are not grouped for fun. They are grouped for convenience, to study their properties and according to their uses in systematic manner.
APPEARS IN
संबंधित प्रश्न
Short Answer Type Question:
What are the similarities between iron, copper, and aluminium?
We cannot compress, cut or bend the rough materials easily.
Match the objects that are made of the same material.
| A | B | C |
 |
 |
 |
 |
 |
 |
 |
 |
 |
Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt
Sugar does not dissolve in water.
Complete the crossword given in the figure with the help of the clues.
Across
1. Which is generally hard, ductile, malleable and sonorous.
2. A metal is called so it can be drawn into wires.
3. Metal bells are used because of this property.
Down
4. A metal generally used for making jewellery.
5. A metal which is liquid at room temperature.
6. A metal which reacts with acid as well as base to form hydrogen gas.
7. Substances used to enhance the growth of plants.
8. Property by virtue of which metals can be beaten into thin sheets.
While doing an activity in class, the teacher asked Paheli to handover a transluscent material. Which among the following materials will Paheli pick and give her teacher?
Which pair of substances among the following would float in a tumbler half filled with water?
Why do you think oxygen dissolved in water is important for the survival of aquatic animals and plants?
Sugar, salt, mustard oil, sand, sawdust, honey, chalk powder, petals of flower, soil, copper sulphate crystals, glucose, wheat flour are some substances given to Paheli. She wants to know whether these substances are soluble in water or not. Help her in identifying soluble and insoluble substances in water.
