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प्रश्न
Statements given below are incorrect. Write the correct statements :
Zinc is used for making power transmission wires.
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उत्तर
Copper is used for making power transmission wires.
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संबंधित प्रश्न
State one use of Iron.
State one use of Gold.
State one use of Mercury.
Name an alloy of lead and tin.
Fill in the following blank with suitable word:
The electrical conductivity and melting point of an alloy is ........... than that of pure metals.
What is a thermite reaction? Explain with the help of an equation. State one use of this reaction.
Explain how, a reduction reaction of aluminium can be used for welding cracked machine parts of iron. Write a chemical equation for the reaction involved.
Mention two uses of the following metals and non-metals
Aluminium
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.
Name a metal which is not malleable :
State two important uses of following metal:
Uses of silver
Give the general characteristics of:
Alkali metals,
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
With reference to the following metals state their use in daily life metal:
iron
With reference to the following metals state their use in daily life metal:
Zinc
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.
Which of the following two combinations are correct?
| Metal | Gas Evolved | |
| (i) | Copper | Yes |
| (ii) | Iron | Yes |
| (iii) | Magnesium | No |
| (iv) | Zinc | Yes |
The metal can be cut with a knife ______.
Metals are ______ conductors of heat and electricity.
