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प्रश्न
With reference to the following metals state their use in daily life metal:
Silver
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उत्तर
Silver:
- For making Jewellery.
- As is conducts more electricity and heat than any other metal which makes it a prime source of use in electronics.
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संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Generally, non-metals react with acids. ( )
Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.
(a) How will she find the nature of the gas?
(b) Write down word equations of all the reactions taking place in this process.
State five uses of metals
State one use of Gold.
Give the composition of an alloy called solder. State its one property and one use.
What is an amalgam?
Which property of 'solder' alloy makes it suitable for welding electrical wires?
Fill in the following blank with suitable word:
Brass is an alloy of copper and .........
State the position of the following in the periodic table:
Alkaline earth metals
Give the general characteristics of:
Alkali metals,
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Write name.
The device used for grinding an ore.
What is it made from? Why?
A pair of tongs.
What is it made from? Why?
Pots and pans
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An amorphous substance which turns from pale green to black on strong heating evolving a colourless, acidic gas as the only gaseous product.
Generally, metals are solid in nature. Which one of the following metals is found in a liquid state at room temperature?
Name one metal and one non-metal that exist in liquid state at room temperature. Also name two metals having melting point less than 310 K (37°C)
Metals and non–metals are used for making ______, ______ and ______.
All gases are ______.
Match the following
| i. | Silica | a. | Caustic potash |
| ii. | Potassium hydroxide | b. | Sand |
| iii. | Sodium hydroxide | c. | Calamine |
| iv. | Zinc carbonate | d. | Caustic soda |
