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प्रश्न
With reference to the following metals state their use in daily life metal:
Zinc
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उत्तर
Zinc:
- For galvanising iron sheets because Zinc coated iron sheets does not rust.
- In Dry cells as Zinc container acts as cathode.
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संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
Give reasons for the following.
Copper cannot displace zinc from its salt solution.
State five uses of metals
State one use of Copper.
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Mention two uses of the following metals and non-metals
Iodine
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State two important uses of following metal:
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Give the general characteristics of:
Alkali metals,
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Why is hydrogen placed with alkali metals?
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Water.
When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time. Why does this happen? Write the chemical equation.
What was Mendeleev's basis for the classification of elements?
What is it made from? Why?
A pair of tongs.
Match the columns.
| Group A | Group B |
| 1) Copper and Zinc | a) Brass |
| 2) Copper and Tin | b) Bronze |
| c) Stainless steel |
What is ductility?
Give reasons for the following.
- Aluminum foils are used to wrap food items.
- Immersion rods for heating liquids are made up of metallic substances.
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- Mercury is used in thermometers.
Name two major non-metals which are present in fertilisers and enhance the growth of plants.
Which metals are liquid at room temperature?
