Advertisements
Advertisements
प्रश्न
Compound X and aluminium are used to join railway tracks.
- Identify the compound X
- Name the reaction
- Write down its reaction.
उत्तर
- Compound X is Fe2O3
- Displacement reaction
- `"Fe"_2"O"_3("s") + 2"Al"overset("Heat")(->)"Al"_2"O"_3("s") + 2"Fe"("l")`
APPEARS IN
संबंधित प्रश्न
What do you observe when dilute sulphuric acid is added to granulated zinc?
What is meant by the metal reactivity series ? State its importance, (any two points).
Write chemical equation for the event.
Aluminium came in contact with air.
Write a chemical equation for the following event.
Zinc oxide is dissolved in dilute hydrochloric acid.
State what is meant by the ‘reactivity series of metals’
Give a balanced equation for the following type of reaction:
A displacement reaction in which a metal above hydrogen in the reactivity series, displaces another metal from the solution of its compound.
Explain the following reaction with the balanced equation.
Sodium burns in air
Which of the following is the correct arrangement of the given metals in ascending order of their reactivity?
Zinc, Iron, Magnesium, Sodium
Explain the following
- Reactivity of Al decreases if it is dipped in HNO3
- Carbon cannot reduce the oxides of Na or Mg
- NaCl is not a conductor of electricity in solid state whereas it does conduct electricity in aqueous solution as well as in molten state
- Iron articles are galvanised.
- Metals like Na, K, Ca and Mg are never found in their free state in nature.
Metal ‘A’ has electronic configuration 2, 8, 1 and metal ‘B’ has electronic configuration 2, 8, 8, 2. Out of these, which metal is more reactive? Write the reaction of this metal with dilute HCl acid.
