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प्रश्न
Give a chemical test to distinguish between the following gases.
HCl and H2S
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उत्तर
| Hydrogen chloride | Hydrogen sulphide |
| Odour of gas: Pungent choking odour. | Odour of gas: Smell as of rotten eggs. |
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संबंधित प्रश्न
FILL IN THE BLANK
On reaction with sulphuric acid solution, barium chloride forms a white precipitate of ........ sulphate.
Write true or false :
When iron and sulphur are heated together a grey mass is formed which is attracted by a magnet .
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Potassium fluoride
Give an example of a reaction where the following are involved
Heat
State the type of reactions for the following represent and balance the ones that are not balanced.
NaOH + HCl → NaCl + H2O
Give an example of the following chemical changes.
A reaction involving
(i) Change of state
(ii) formation of precipitate
Give a word equation for the following reaction.
An exothermic reaction where both the reactants are gases, one of which is oxygen.
Complete the table given below.
| Addition of dil. H2SO4 to KHCO3 | Name of residue obtained |
Give a suitable example with an equation to show the representation of a chemical reaction.
Complete the statement by filling in the blank with the correct word:
The reddish-brown precipitate obtained during a double decomposition precipitation reaction between an iron salt and alkali is __________.
