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प्रश्न
Name a metal which is best conductor of electricity :
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उत्तर
Silver
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संबंधित प्रश्न
Fill in the blanks:
Metals react with acids to produce _________ gas.
Give reasons for the following.
Copper cannot displace zinc from its salt solution.
The atomic number of an element X is 12.
(a) What must an atom of X do to attain the nearest inert gas electron configuration?
(b) Which inert gas is nearest to X?
Name two alloys of iron. What elements are present in these alloys?
Fill in the following blank with suitable word:
The electrical conductivity and melting point of an alloy is ........... than that of pure metals.
Give reasons
Graphite is used in the leads of pencils
Fill in the blank
A metal that gives dazzling effect to crackers when they explode is ______
State two important uses of following metal
Uses of mercury
State the position of the following in the periodic table:
Iron and zinc
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 |
What is it made from? Why?
Electric cables
With reference to the following metals state their use in daily life metal:
Aluminium
With reference to the following metal state its use in daily life:
Magnesium
The metal which is liquid at room temperature is ______.
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?
Metals and non–metals are used for making ______, ______ and ______.
The typical shine of metals is called ______.
Which metals are liquid at room temperature?
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
Metal atoms tend to have a maximum of ______ electrons in the outermost shell.
