Advertisements
Advertisements
प्रश्न
Mention two uses of the following metals and non-metals
Aluminium
Advertisements
उत्तर
It is used to make electric wires.
It is used to make utensils, cans, window fram’es, etc.
APPEARS IN
संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Generally, non-metals react with acids. ( )
Give reasons for the following.
Copper cannot displace zinc from its salt solution.
What happens when Iron nails are placed in copper sulphate solution?
Write word equations of the reactions involved.
State one use of the following metal:
Aluminium
Which property of ‘solder’ alloy makes it suitable for welding electrical wires?
Mention two uses of the following metals and non-metals
Gold
Give reasons
Gold is mixed with copper and nickel.
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
A solution of a metal in mercury is called ________
Tick (√) the most appropriate answer.
Graphite is used :
State the position of the following in the periodic table:
Iron and zinc
Why are alkali metals kept in kerosene oil?
Molecular formula of the chloride of an element X is XCl. This compound is a solid having high melting point. Write name of any element present in the same group as X
What is it made from? Why?
A pair of tongs.
The metal which is liquid at room temperature is ______.
Which one of the following metals do not react with cold as well as hot water?
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 are ______ conductors of heat and electricity.
Match the following
| i. | Silica | a. | Caustic potash |
| ii. | Potassium hydroxide | b. | Sand |
| iii. | Sodium hydroxide | c. | Calamine |
| iv. | Zinc carbonate | d. | Caustic soda |
Why are metalloids called semimetals?
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the reducing agent.
