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प्रश्न
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 |
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उत्तर
(i) Duralumin – (C) Aircraft body
(ii) Solder – (A) Electrical fuse
(iii) Brass – (D) Decorative articles
(iv) Stainless steel – (B) surgical instruments
संबंधित प्रश्न
A metal having low melting point is ______ but a non-metal having very high melting point is ______.
State two important uses of the following metal.
Uses of magnesium
State why telegraph poles are painted with aluminium paint.
Name the following:
A metal used in packaging.
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.
Complete the following flow chart.
The metal which is liquid at room temperature is ______.
Give reasons for the following.
- Aluminum foils are used to wrap food items.
- Immersion rods for heating liquids are made up of metallic substances.
- Sodium and potassium are stored in kerosene.
- Mercury is used in thermometers.
A is a reddish-brown metal, which combines with O2 at < 1370 K gives B, a black coloured compound. At a temperature > 1370 K, A gives C which is red in colour. Find A, B, and C with reaction.
Generally, metals are solid in nature. Which one of the following metals is found in a liquid state at room temperature?
