Advertisements
Advertisements
प्रश्न
With reference to the following metals state their use in daily life metal:
Magnesium
उत्तर
Magnesium:
- It is used in fire works as it bums with a dazzling light.
- Photography: Magnesium produces a bright flash. It is used in strip form.
APPEARS IN
संबंधित प्रश्न
Fill in the blanks:
Metals react with acids to produce _________ gas.
State one use of Aluminium.
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?
What is an amalgam?
Fill in the following blank with suitable word:
The electrical conductivity and melting point of an alloy is ........... than that of pure metals.
Mention two uses of the following metals and non-metals
Oxygen
Give reasons
Graphite is used in the leads of pencils
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.
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 ________
Write name.
The nonmetal having electrical conductivity.
______ is the first scientist who used the term element.
Metals are ______ conductors of heat and electricity.
Sodium is a hard metal.
Silver and copper are very good conductors of electricity.
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 metallic element.
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.
