Advertisements
Advertisements
प्रश्न
State two important uses of following metal
Uses of mercury
Advertisements
उत्तर
Uses of mercury :
- It is used as a thermometric liquid in laboratory as well as clinical thermometers.
- Gold amalgam and silver amalgam are used in dentistry for filling tooth cavities.
APPEARS IN
संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
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.
For the reduction of a metal oxide, suggest a reducing agent other than carbon.
Which of the following alloys contains mercury as one of the constituents?
Mention two uses of the following metals and non-metals
Aluminium
Write ‘true’ or ‘false’ for the following statement :
Silver is used to make electric cables.
Aluminium is not used to make :
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
______ is a liquid metal.
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
Salt of silver, such as ________ is used for making photographic films.
Statements given below are incorrect. Write the correct statements :
Aluminium is best conductor of electricity.
Statements given below are incorrect. Write the correct statements :
Zinc is used for making power transmission wires.
State the position of the following in the periodic table:
Alkali metals
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Water.
Write name.
Molecular formula of the common ore of aluminium.
Which of the following two combinations are correct?
| Metal | Gas Evolved | |
| (i) | Copper | Yes |
| (ii) | Iron | Yes |
| (iii) | Magnesium | No |
| (iv) | Zinc | Yes |
______ is the first scientist who used the term element.
In the following 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.
The liquid metal at room temperature ______.
Why do metals appear shiny?
