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प्रश्न
Write ‘true’ or ‘false’ for the following statement :
Silver is used to make electric cables.
विकल्प
True
False
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उत्तर
False
APPEARS IN
संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Generally, non-metals react with acids. ( )
State one use of the following metal:
Gold
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?
The electrical conductivity and melting point of an alloy is ______ than that of pure metals.
Which of the following alloys contains mercury as one of the constituents?
Mention two uses of the following metals and non-metals
Gold
Give reasons
Gold is mixed with copper and nickel.
Statements given below are incorrect. Write the correct statements :
Bronze is a mixture of 10% copper, 80% zinc and 10% tin.
Write ‘True’ or ‘False’ in front of following statement.
Brass is an alloy of copper and zinc and has lustrous yellow colour.
Write ‘True’ or ‘False’ in front of following statement.
Magnesium is used in making light weight alloys of aluminium.
Name a metal which is not malleable :
Name a metal which is best conductor of electricity :
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Hydrochloric acid,
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
The minerals from which the metal can be separated economically are called _______.
Aluminium: _______: gold : : electric insulator
What is ductility?
Name one metal and one non-metal that exist in liquid state at room temperature. Also name two metals having melting point less than 310 K (37°C)
The metal can be cut with a knife ______.
