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प्रश्न
Tick (√) the most appropriate answer.
Sodium amalgam is prepared by dissolving sodium in :
पर्याय
molten copper
dilute vinegar
mercury
molten silver
उत्तर
mercury
APPEARS IN
संबंधित प्रश्न
Explain the meaning of malleable.
Give reasons for the following.
Immersion rods for heating liquids are made up of metallic substances.
Write a balanced chemical equation for the reaction of zinc with potassium hydroxide solution.
Name two metals which are used for making domestic utensils and factory equipment.
Choose the acidic oxides, basic oxides and neutral oxides from the following:
Na2O; CO2; CO; SO2; MgO; N2O; H2O.
Name two physical properties of sodium in which it's behaviour is not as expected from it's classification as metal.
Name a non-metal having lustre (shining surface).
State three reasons (of which at least one must be chemical) for believing that sulphur is a non-metal.
Name a metal that is brittle
Write ‘true’ or ‘false’ for the following statement
Sodium can be cut with a knife.
Tick (√) the most appropriate answer.
A metal which is a poor conductor of electricity is:
Why are alloys made?
`M+ HCl → MCl_2 +—`
Name:
a non metal which can form a positive ion
The metal other than aluminium, which has a strong affinity for oxygen is ______.
Explain the following:
Metals like calcium and magnesium are never found in their free state in nature.
With reference to the physical properties of metals and non-metals, state the following exception.
A metal which floats on water.
Complete the statement given below, by filling in the blank with the correct word:
A non-metal that leaves a mark on paper _______
Complete the statement given below, by filling in the blank with the correct word:
A non-metal which allows an electric current to pass through it ______.
Non-metals form covalent chlorides because ____________.
