Advertisements
Advertisements
प्रश्न
Give a chemical test to distinguish between the following gases.
CO2 and SO2
Advertisements
उत्तर
|
Carbon dioxide |
sulphur dioxide |
| Litmus test: It turns moist blue litmus faint red. | Litmus test: It turns moist blue litmus red and finally bleaches it. This bleaching is temporary. |
| The gas has no effect on filter paper dipped in acidified K2Cr2O7 or KMnO4. | It has no effect on lead acetate paper (Distinct from H2S). This test distinguishes it from H2S. |
APPEARS IN
संबंधित प्रश्न
Fill in the blank:
During a chemical reaction transfer of ________ takes place.
Name the type of chemical reaction shown by the following equation :
Fe2O3 + 2Al → Al2O3 + 2Fe
Explain,giving one example of the following chemical changes:
Reversible reaction
State the original colour of the following substance and colour of residue obtained after heating.
Lead nitrate
What do you observe when CO2 is passed through lime water first and then a little in excess.
Represent the addition of dilute sulphuric acid to zinc by means of a chemical equation. State the function of the arrow between the reactants and products.
Give a word equation for the following reaction.
An exothermic reaction where both the reactants are gases, one of which is oxygen.
Higher order Thinking question
A very hot glass on putting in cold water cracks. What does this change indicate?
Classify the following as physical or chemical properties
Zinc dissolves in hydrochloric acid with the evolution of hydrogen gas.
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
What changes do you expect?
