Advertisements
Advertisements
प्रश्न
Thin strips of magnesium, copper, and iron are taken.
Arrange these metals in descending order of reactivity.
Advertisements
उत्तर
Mg > Fe > Cu
APPEARS IN
संबंधित प्रश्न
Give an equation to express the reaction between:
Steam and red hot iron
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.
Based on the reactions of water on metals, arrange the following metals in increasing order of reactivity: iron, sodium, magnesium, zinc, calcium
Hydrogen is obtained by displacement from:
- dilute sulphuric acid
- dilute hydrochloric acid
Write equations using zinc and iron.
Why does copper not show similar behavior?
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?
Write a balanced equation for the reaction named metal with (i) boiling water (ii) steam.
Select the odd one out and justify your answer.
SO2, H2S, NH3, and CO3
Correct the following statement:
Conc. H2SO4 reacts with zinc to liberate hydrogen.
Name the following.
A metal which cannot be used for the preparation of hydrogen using dilute acids.
Name the following.
The salt formed when aluminium reacts with potassium hydroxide, during the preparation of hydrogen from alkalis.
