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प्रश्न
Complete the table given below.
| Addition of dil. H2SO4 to FeS | Odour of gas evolved |
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उत्तर
| Addition of dil. H2SO4 to FeS | Odour of gas evolved | Rotten eggs (H2S Hydrogen sulphide) |
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संबंधित प्रश्न
Give one example that illustrates the following characteristics of a chemical reaction:
Change in state
TRUE \ FALSE
Temperature at which a liquid starts boiling is known as the boiling point of that liquid. True or false ?
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)
Oxygen is a ______ in respiration.
Explain by writing a word equation.
Hard water gets softened on mixing with a solution of washing soda.
Complete the following table and write your observations.
|
Hydrogen sulphide |
Ammonia |
Sulphur dioxide |
Hydrogen chloride |
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Shake the gas with red litmus solution |
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Shake the gas with blue litmus solution |
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Apply a burning splint to a gas |
What do you observe when dilute sulphuric acid is added to the following:
Sodium Sulphide
Give a word equation for the following reaction.
Two solids which combine on heating, to give a liquid.
Complete the table given below.
| Heat on sodium chloride | Colour imparted to flame during flame test |
What happens when cane sugar is strongly heated? Mention any two changes in it.
Silver articles turning black: ______:: Boiling of H2O: physical change ______.
