Advertisements
Advertisements
Question
Give a chemical test to distinguish between the following gases.
CO2 and SO2
Advertisements
Solution
|
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
RELATED QUESTIONS
Complete and balance the following chemical equations:
N2 + O2 →
TRUE \ FALSE
Electrolytic refining is a method in which a thin coating of a metal is done over another metal.
Match the pairs.
| a. | Photosynthesis | i. | Tendency to lose electrons |
| b. | Water | ii. | Reactant in combustion process |
| c. | Sodium chloride | iii. | Chemical change |
| d. | Dissolution of salt in water | iv. | Covalent bond |
| e. | Carbon | v. | Ionic bond |
| f. | Fluorine | vi. | Physical change |
| g. | Magnesium | vii. | Tendency to form anion |
Complete and balance the following reaction:
\[\ce{NH3 + O2 ->[\Delta]}\]
What do you observe when dilute sulphuric acid is added to the following:
Sodium Sulphide
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A coloured substance which leaves a black residue and evolves two gases one of which is acidic and coloured and the other neutral and colourless.
Explain the term chemical reaction with special reference to reactants and products.
Select the correct answer from the options given below:
State the gaseous product formed, when
An ammonium salt reacts with an alkali.
Limestone contains ______ mainly.
Chemical change is a temporary change.
