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प्रश्न
Mention two uses of the following metals and non-metals
Iodine
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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.
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संबंधित प्रश्न
Give a reason for Alkali metals are good reducing agents.
State one use of the following metal:
Aluminium
The atomic number of an element Y is 16.
- What must an atom of Y do to achieve the nearest inert gas electron arrangement?
- Which inert gas is nearest to Y?
Give reasons
Aluminium is used in making aircrafts.
Give two uses of Germanium
Statements given below are incorrect. Write the correct statements :
Zinc is used for making power transmission wires.
Write ‘True’ or ‘False’ in front of following statement.
Brass is an alloy of copper and zinc and has lustrous yellow colour.
State the position of the following in the periodic table:
Alkaline earth metals
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Water.
What is it made from? Why?
Pots and pans
With reference to the following metal state its use in daily life:
Magnesium
Give a reason why iron objects rust easily but the iron pillar at Qutab Minar has not rusted over the years.
Name the following:
The most reactive halogen.
Complete the following flowchart.
Complete the following flow chart.
Which one of the following four metals would be displaced from the solution of its salts by other three metals?
Give an example of a metal which
- is liquid at room temperature.
- is the best conductor of heat.
Name two soft metals which can be cut with a knife.
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.
Which metals are liquid at room temperature?
