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प्रश्न
Fill in the following blank with suitable word:
The electrical conductivity and melting point of an alloy is ........... than that of pure metals.
उत्तर
The electrical conductivity and melting point of an alloy is less than that of pure metals.
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संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Copper displaces zinc from zinc sulphate solution. ( )
How does the electrical conductivity of copper alloys, brass and bronze, differ from that of pure copper?
Give the general characteristics of:
Alkaline earth metals with reference to
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Match the alloys given in column I to the uses given in column II :
| Column I | Column II |
| (i) Duralumin | A. Electrical fuse |
| (ii) Solder | B. Surgical instruments |
| (iii) Brass | C. Aircraft body |
| (iv) Stainless Steel | D. Decorative articles |
State the position of the following in the periodic table:
Halogens
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
Electronic configuration of metal A is 2,8,1. Electronic configuration of metal B is 2,8,8,2. Which of the above metals is more reactive? Explain with reason.
The most abundant element in the universe is ____________.
Generally, metals are solid in nature. Which one of the following metals is found in a liquid state at room temperature?
In the given figure, you find that the bulb glows when an iron nail is placed between two ends of wire. Complete the following sentences on the basis of this fact.
- ______ is a metal.
- Metals are good ______ of electricity.
