Advertisements
Advertisements
प्रश्न
Which of the following metals are obtained by electrolysis of their chlorides in molten state?
- Na
- Ca
- Fe
- Cu
पर्याय
(i) and (iv)
(iii) and (iv)
(i) and (iii)
(i) and (ii)
उत्तर
(i) and (ii)
Explanation -
Sodium and calcium are the metals obtained from their chloride ores by electrolysis in the molten state.
APPEARS IN
संबंधित प्रश्न
Statements given below are incorrect. Write the correct statements :
Aluminium 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:
Oxygen
Why are alkali metals kept in kerosene oil?
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.
Which is the non-ionic compound in the compounds given below.
AgNO3 + Nacl → AgCl + NaNO3
With reference to the following metals state their use in daily life metal:
iron
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.
An element forms an oxide A2O3 which is acidic in nature. Identify A as a metal or non-metal.
The liquid metal at room temperature ______.