Advertisements
Advertisements
Question
Write the chemical reaction where the following changes are observed.
Precipitate is formed
Solution
\[\ce{NaCI_(_s_) + AgNO3_(_s_) -> AgCI ↓ + NaNO3_(_a_q_)}\]
APPEARS IN
RELATED QUESTIONS
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Iron pipes coated with zinc do not get rusted easily.
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Condensation of steam is not a chemical change.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Miscible liquids having slightly different boiling points can be separated by the
- evaporation
- distillation
- fractional distillation
- sedimentation
Is kerosene an electrolyte or a non-electrolyte ?
Write true or false :
When potassium iodide solution is added to lead acetate solution a red precipitate is formed.
A solution of a substance ‘X’ is used for white washing Name the substance ‘X’ and write its formula.
Give an example of a reaction where the following are involved
Heat
Give an example of a reaction where the following are involved
Light
Give an example of a reaction where the following are involved
Electricity
Give an example of a reaction where the following are involved
Pressure
State the original colour of the following substance and colour of residue obtained after heating.
Copper carbonate
Give reason for the following:
The catalytic oxidation of sulphur dioxide to sulphur trioxide is represented by a double arrow {⇌}
between the reactants and products, formed in the chemical reaction.
A chemical reaction is often accompanied by external indications or characteristics which include –
- Colour change
- Effervescence or gas evolved
- Evolution or absorption of heat
- Formation of a precipitate.
With reference to each of the above indications, state the external indication seen during – Thermal decomposition of mercury [II] oxide.
Give balanced equation for the following conversion affected by heat alone on the substance:
Ammonium dichromate to nitrogen
Differentiate between the following:
Neutralization reaction and a precipitation reaction.
NPK are the primary nutrients for plants.
Silver metal can displace hydrogen gas from nitric acid.
Write some materials prepared by chemical changes.
Write a note on the catalyst.
Assertion (A): Cutting paper into very small pieces is an irreversible change.
Reason (R): Physical changes are always reversible.