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प्रश्न
What do you understand by precipitation reaction? Explain with examples.
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उत्तर
Precipitation reactions occur when cations and anions in aqueous solution combine to form an insoluble ionic solid called a precipitate. A precipitate is a solid that forms out of solution.
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संबंधित प्रश्न
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer
Which of the following is a reducing agent?
- oxygen
- chlorine
- hydrogen
- none of these
Give a chemical test to distinguish between the following gases.
H2 and CO2
Select the correct answer for the following options:
The black residue obtained on heating copper carbonate.
Give balanced equation for the following conversion affected by heat alone on the substance:
Copper carbonate to copper oxide
State the following reaction represent oxidation or reduction.
\[\ce{Fe++->Fe+++}\]
Select the correct answer from the options given below:
State the gaseous product formed, when
An active metal reacts with dilute sulphuric acid.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Copper nitrate.
When lithium metal is placed in hydrochloric acid, _______ gas is evolved.
Rusting of iron is ______.
Write five changes in the characteristics of a substance that can take place during a chemical change.
