Advertisements
Advertisements
प्रश्न
Give a chemical test to distinguish between the following gases.
HCl and Cl2
Advertisements
उत्तर
| Hydrogen chloride | Chlorine |
| Colour of gas: The gas is colourless. | Colour of gas: The gas is greenish-yellow. |
APPEARS IN
संबंधित प्रश्न
Complete and balance the following chemical equations:
`"H"_2"S"` + `"CI"_2` `→`
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Compounds, which in their molten state allow an electric current to pass through them are called
- electrolytes
- non-electrolytes
- non-conductors
- none of these
Define an electrochemical reaction.
Give an example of the following chemical change.
A reaction where colour change is noticed
Select the correct answer for the following options:
The black residue obtained on heating copper carbonate.
State the following reaction represent oxidation or reduction.
\[\ce{H->H+}\]
When an aqueous solution of potassium chloride is added to an aqueous solution of silver nitrate, a white precipitate is formed. Give the chemical equation of this reaction.
When magnesium is burnt in the air, a new substance is formed which is ______.
Assertion (A): Cutting paper into very small pieces is an irreversible change.
Reason (R): Physical changes are always reversible.
When milk is mixed with coffee decoction, the colour of milk and decoction changes due to ______.
