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प्रश्न
Give a chemical test to distinguish between the following gases.
CO2 and SO2
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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. |
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संबंधित प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Iron and rust are the same substances.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Which one of the following alters the rate of the chemical reaction without itself undergoing any change?
- temperature and Pressure
- concentration of reactants
- presence of catalyst
- none of these
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
Chlorine (Cl2) molecule is formed by ______ of electrons between two chlorine atoms.
Give an example of a reaction where the following are involved
Heat
What is a chemical change? Give two examples of chemical change?
What do you observe when Cl2 is passed through potassium iodide (KI) solution.
Explain the term ‘chemical reaction’ with special reference to – ‘reactants’ and ‘products’.
Select the correct answer for the following options:
The basic gas obtained when two gases react in presence of a catalyst and the reaction is exothermic.
Give a balanced equation for the conversion of an ammonium salt to a basic gas.
Write a note on the catalyst.
