Advertisements
Advertisements
प्रश्न
Mention two uses of the following metals and non-metals
Iodine
Advertisements
उत्तर
It is used in photographic films in the form of potassium iodide.
It is added to salt to make it iodized salt which is necessary for the growth of human body.
APPEARS IN
संबंधित प्रश्न
Give reasons for the following.
Sodium and potassium are stored in kerosene.
Write the name and formula of a metal hydride.
A metal having low melting point is ______ but a non-metal having very high melting point is ______.
What is a thermite reaction? Explain with the help of an equation.
Name one ore of manganese. Which compound of manganese is present in this ore? Also write its chemical formula.
Give reasons
Magnesium is used in fire works.
Give reasons
Gold is mixed with copper and nickel.
Write ‘True’ or ‘False’ in front of following statement.
Magnesium is used in making light weight alloys of aluminium.
State two important uses of following metals:
Uses of iron
State two important uses of following metal:
Uses of aluminium
State the position of the following in the periodic table:
Iron and zinc
When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time. Why does this happen? Write the chemical equation.
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
Which is the non-ionic compound in the compounds given below.
AgNO3 + Nacl → AgCl + NaNO3
An element which is always lustrous, malleable and ductile is ______.
The ability of metals to be drawn into thin wire is known as
Name two soft metals which can be cut with a knife.
The typical shine of metals is called ______.
Why do metals appear shiny?
Which metals are not solid at room temperature?
