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प्रश्न
Name the following:
A metal used in flexible pipes.
उत्तर
Lead
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संबंधित प्रश्न
State one use of Iron.
Name two alloys of iron. What elements are present in these alloys?
Give reasons
Graphite is used in the leads of pencils
Statements given below are incorrect. Write the correct statements :
Bronze is a mixture of 10% copper, 80% zinc and 10% tin.
State two important uses of following metal:
Uses of gold
State two important uses of following metal
Uses of tin
State two important uses of following metal
Uses of mercury
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Water.
Why are alkali metals kept in kerosene oil?
Write scientific reason.
Generally the ionic compounds have high melting points.
Which is the non-ionic compound in the compounds given below.
AgNO3 + Nacl → AgCl + NaNO3
What is it made from? Why?
Ornaments
With reference to the following metals state their use in daily life metal:
Magnesium
With reference to the following metals state their use in daily life metal:
Zinc
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of 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.
An amorphous substance which turns from pale green to black on strong heating evolving a colourless, acidic gas as the only gaseous product.
The metal which is liquid at room temperature is ______.
Which of the following metals are obtained by electrolysis of their chlorides in molten state?
- Na
- Ca
- Fe
- Cu
Metals are usually solids or gases at room temperature.
