Advertisements
Advertisements
प्रश्न
State two important uses of following metal:
Uses of silver
उत्तर
Uses of silver :
- It is used for making coins and ornaments.
- It is used for making high quality glass mirrors.
APPEARS IN
संबंधित प्रश्न
Fill in the blanks:
Metals react with acids to produce _________ gas.
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Generally, non-metals react with acids. ( )
Write the name and formulae of a metal hydride.
State one use of Iron.
What elements are present in steel? How are the properties of steel different from those of pure iron?
Mention two uses of the following metals and non-metals
Aluminium
Give reasons
Gold is mixed with copper and nickel.
Tick (√) the most appropriate answer.
Graphite is used :
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.
The device used for grinding an ore.
Write scientific reason.
Generally the ionic compounds have high melting points.
What was Mendeleev's basis for the classification of elements?
With reference to the following metals state their use in daily life metal:
copper
Name the following:
The most reactive halogen.
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
Complete the following flow chart.
What is ductility?
Give reasons for the following.
- Aluminum foils are used to wrap food items.
- Immersion rods for heating liquids are made up of metallic substances.
- Sodium and potassium are stored in kerosene.
- Mercury is used in thermometers.
The metals which are found in both free state as well as combined state are ______.
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.
