Advertisements
Advertisements
प्रश्न
Give an equation to express the reaction between:
Steam and red hot iron
Advertisements
उत्तर
3Fe + 4H2O⇋ Fe3O4 + 4H2
APPEARS IN
संबंधित प्रश्न
Complete the following word equation:
Calcium + water → calcium hydroxide + _________
A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.
Name the gas formed in the reaction. How would you test the gas?
Thin strips of magnesium, copper, and iron are taken.
Write down what happens when these metals are treated as follows:
- Heated in presence of air
- Heated with dil.HCl
- Added to an aqueous solution of zinc sulphate.
Choose the correct option:
Hydrogen is evolved by the action of cold dil. HNO3 on
Name two alkalies that can displace hydrogen. Give balanced equations for the same. Why are the metals you have used considered to have a unique nature?
Give a reason for the following.
Hydrogen is collected by the downward displacement of water and not of air, even though it is lighter than air.
Which of the following metals does not give hydrogen with acids?
Correct the following statement:
Conc. H2SO4 reacts with zinc to liberate hydrogen.
What do you observe when dilute sulphuric acid is added to Zinc granules.
‘Magnesium reacts with very dilute nitric acid at low temperatures liberating hydrogen.’ Give reasons.
