Advertisements
Advertisements
प्रश्न
The property/properties which enable copper metal to be used for making electric wires is/are :
पर्याय
copper metal is malleable and ductile
copper metal is a good conductor of electricity
copper metal is ductile and has low electrical resistance
copper metal is sonorous and an excellent conductor of electricity
Advertisements
उत्तर
copper metal is ductile and has low electrical resistance
Copper is a good conductor of electricity. It means that it offers very low electric resistance. Also, it is highly ductile due to which it can be drawn into very thin wires.
APPEARS IN
संबंधित प्रश्न
The inter-molecular force is maximum in
What do you mean by the inter-molecular spaces? How do they vary in different states of matter?
Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
What is meant by saying that metals are malleable and ductile?
Define a compound. Give two points of evidence to show that sodium chloride is a compound.
Name a metal which can be easily cut with a knife.
Which of the following is not an element ?
Classify the following into true solutions and colloidal solutions:
Ink, Salt solution, Starch solution, Blood, Sugar solution
Name the different types of solutions. Give one example of each.
Define Aerosol Give one example.
Define the emulsion. Give one example.
Which of the following do not exhibit Tyndall effect ?
Starch solution, Sugar solution, Ink, Salt solution, Copper sulphate solution, Ammonium chloride solution, Fog, Smoke, Car exhausts.
Name the process by which common salt is purified.
Pure copper sulphate can be obtained from an impure sample by the process of :
The liquid air has three components X, Y and Z whose boiling points are : –186°C, –183°C and –196°C,
respectively. When liquid air is fed into a tall fractional distillation column from near its bottom and warmed
up slowly :
(a) Which component will be collected from near the bottom of the fraction distillation column ? Why ?
(b) Which component will be collected from the top part of the fractional distillation column ? Why ?
(c) Which component will be collected from the middle part of the fractional distillation column ? Why ?
(d) What could the component X, Y and Z be ?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
How did she identify what she needed?
Why wires cannot be drawn from materials such as stone or wood?
Stars including Sun are covered in ______.
The non S I and S I units of some physical quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity:
| (A) | (B) | ||
| (a) | degree celsius | (i) | kilogram |
| (b) | centimetre | (ii) | pascal |
| (c) | gram per centimetre cube | (iii) | metre |
| (d) | bar | (iv) | kelvin |
| (e) | milligram | (v) | kilogram per metre cube |
Gases do not diffuse very easily.
