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प्रश्न
Write ‘True’ or ‘False’ in front of following statement.
Magnesium is used in making light weight alloys of aluminium.
विकल्प
True
False
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उत्तर
True.
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संबंधित प्रश्न
Which property of graphite is utilised in making electrodes?
State one use of the following metal:
Iron
The atomic number of an element X is 12.
- What must an atom of X do to attain the nearest inert gas electron configuration?
- Which inert gas is nearest to X?
What is an amalgam?
What is a thermite reaction? Explain with the help of an equation.
Mention two uses of the following metals and non-metals
Aluminium
Give reasons
Graphite is used in the leads of pencils
Give two uses of Germanium
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
______ is a liquid metal.
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:
Aluminium
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Sulphuric acid
Write name.
Alloy of sodium with mercury.
Write name.
The oxide that forms salt and water by reacting with both acid and base.
With reference to the following metals state their use in daily life metal:
Silver
Write the name.
Two highly reactive metals-
When a copper coin is dipped in the solution of silver nitrate, it shows a lustre on its surface. Explain this process with the help of a chemical equation.
The most abundant metal in the earth’s crust is ____________.
Which of the following metals are obtained by electrolysis of their chlorides in molten state?
- Na
- Ca
- Fe
- Cu
An element forms an oxide A2O3 which is acidic in nature. Identify A as a metal or non-metal.
