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प्रश्न
Complete the following flow chart.
उत्तर
| Physical properties of metals | ||||
| Ductile and malleable | Good conductors of heat and electricity | Lustrous | Sonorous | Hard (except lithium, sodium, potassium) |
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संबंधित प्रश्न
Give a reason for Alkali metals are good reducing agents.
State five uses of metals
Explain how, a reduction reaction of aluminium can be used for welding cracked machine parts of iron. Write a chemical equation for the reaction involved.
Mention two uses of the following metals and non-metals
Oxygen
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 :
Zinc is used for making power transmission wires.
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 metal
Uses of tin
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Hydrochloric acid,
Write scientific reason.
Generally the ionic compounds have high melting points.
State the position of the following in the periodic table:
Halogens
With reference to the following metals state their use in daily life metal:
copper
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A white crystalline solid which decrepitates on heating leaving a residue which fuses with the glass and evolves two gases one of which is coloured and acidic.
Complete the following flowchart.
Which one of the following is an example for a metal?
The ability of metals to be drawn into thin wire is known as
______ is the first scientist who used the term element.
Give an example of a metal which
- is liquid at room temperature.
- is the best conductor of heat.
Which of the following is not a metal?
A doctor prescribed a tablet to a patient suffering from iron deficiency. The tablet does not look like iron. Explain.
