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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
Give a reason for the following:
Alkali metals are good reducing agents.
Write the name and formula of a metal hydride.
Which property of graphite is utilised in making electrodes?
Mention two uses of the following metals and non-metals
Aluminium
Mention two uses of the following metals and non-metals
Iodine
Give reasons
Magnesium is used in fire works.
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
Salt of silver, such as ________ is used for making photographic films.
State two important uses of the following metal.
Uses of magnesium
Write name.
The nonmetal having electrical conductivity.
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:
Lead
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.
A white crystalline solid which decrepitates on heating leaving a residue which fuses with the glass and evolves two gases one of which is coloured and acidic.
The minerals from which the metal can be separated economically are called _______.
The metal which is liquid at room temperature is ______.
Why are bells made of metals?
Give reasons for the following.
- Aluminum foils are used to wrap food items.
- Immersion rods for heating liquids are made up of metallic substances.
- Sodium and potassium are stored in kerosene.
- Mercury is used in thermometers.
A is a reddish-brown metal, which combines with O2 at < 1370 K gives B, a black coloured compound. At a temperature > 1370 K, A gives C which is red in colour. Find A, B, and C with reaction.
Which of the following is not a metal?
The liquid metal at room temperature ______.
Which metals are liquid at room temperature?
