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प्रश्न
Some of the following statements are incorrect. Find the incorrect statements and correct them.
- The property of metals by virtue of which they can be drawn into wires is called ductility.
- Metals are good conductors of electricity but poor conductor of heat.
- Articles made up of metals produce ringing sound when struck hard.
- Oxides of non-metals and metals are acidic in nature.
- A less reactive metal displaces a more reactive metal from its salt solution in water.
उत्तर
- This Statement is True.
- This statement is False.
Correct Statement - Metals are good conductors of heat and electricity. - This Statement is True, because metals are sonorous.
- This statement is False.
Correct Statement - Oxides of non-metals are acidic in nature and oxides of metals are basic in nature. - This statement is False.
Correct Statement - a more reactive metal displaces a less reactive metal from its salt solution in water.
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संबंधित प्रश्न
Gold and diamond are the examples of _________ materials.
Look at the pictures and identify the materials by which they are made of:
(paper, clay, glass, wood, plastic, metal rubber, wax
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| ____________ | ____________ | ____________ | ___________ | _____________ |
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| ____________ | ____________ | ____________ | ____________ | ____________ |
Match the objects that are made of the same material.
| A | B | C |
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A piece of wood floats on water.
Choose the odd one:
Smooth materials do not have ups and downs.
Pick one material from the following which is completely soluble in water.
While doing an activity in class, the teacher asked Paheli to .handover a translucent material. Which among the following materials will Paheli pick and give her teacher?
lt was Paheli’s birthday. Her grandmother gave her two gifts made of metals, one old dull silver spoon and a pair of lustrous gold earrings. She was surprised to see the difference in the appearance of the two metals. Can you explain the reason for this difference?
Why do you think oxygen dissolved in water is important for the survival of aquatic animals and plants?
