Advertisements
Advertisements
प्रश्न
Give an example of a reaction where the following are involved:
Close contact
उत्तर
\[\ce{Pb(NO3)2(s) + 2KI (s) -> 2KNO3 + PbI2 (s)}\]
APPEARS IN
संबंधित प्रश्न
TRUE \ FALSE
Weak electrolytes dissociate partially in their aqueous or fused state.
TRUE \ FALSE
Temperature at which a liquid starts boiling is known as the boiling point of that liquid. True or false ?
Explain the following reaction with one suitable example of Decomposition reaction
Define Electrochemical reaction
Give an example
Explain,giving one example of the following chemical changes:
Reversible reaction
Give a chemical test to distinguish between the following gases.
NH3 and HCl
Distinguish by dilute sulphuric acid.
Copper and magnesium?
Select the correct answer for the following options:
The pale blue precipitated obtained when copper [II] sulphate reacts with sodium hydroxide.
Give a word equation for the following reaction.
An exothermic reaction where both the reactants are gases, one of which is oxygen.
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.
Give balanced equation for the following conversion affected by heat alone on the substance:
Zinc nitrate to nitrogen dioxide
Explain the Silver nitrate solution is kept in coloured reagent bottles in the laboratory.
A chemical reaction is often accompanied by external indications or characteristics.
Give two examples where a chemical reaction is accompanied by a change in colour of the reactants and products on completion of the 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 __________.
What kind of a change is associated with decaying of a plants?
Silver metal can displace hydrogen gas from nitric acid.
Burning of paper is the best example of ______ change.
Which is used as a catalyst during the process of hydrogenation of oils?
Why is spoiling food a chemical change?